1 of 5

UNAUDITED Schedule of Investments By Security Type BlackRock Cash Funds: Institutional Money Market Master Portfolio 31-Aug-21 Maturity or Final Yield or Amortized Cost Moody's S&P Position Description Identifier Par ($) Par (%) Geography Reset Maturity Coupon ($) Rating Rating

WAM 41 days / WAL 75 days

Certificate of Deposit 20,753,675,000 29.47% 20,753,247,062 DNB ASA (NY BRANCH) 23344NFB7 980,000,000 1.39% 2-Sep-21 2-Sep-21 0.07% 980,000,000 P-1 A-1+ Norway (NY BRANCH) 63873QQA5 493,000,000 0.70% 1-Sep-21 7-Jul-22 0.22% 493,000,000 P-1 A-1 France LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 51501HNU9 482,000,000 0.68% 4-Jan-22 3-Jan-22 0.15% 482,000,000 P-1 NR Germany CANADIAN IMPERIAL BANK OF COMMERCE (NY BRANCH) 13606CG32 480,000,000 0.68% 4-Oct-21 4-Oct-21 0.18% 480,000,000 P-1 A-1 Canada BANK PLC (NY BRANCH) 06742TVX1 476,000,000 0.68% 31-Dec-21 31-Dec-21 0.33% 476,000,000 P-1 A-1 ROYAL BANK OF CANADA (NY BRANCH) 78012UZP3 424,250,000 0.60% 23-Sep-21 23-Dec-21 0.25% 424,250,000 (P)P-1 A-1+ Canada AG (NY BRANCH) 22549LW50 420,000,000 0.60% 1-Sep-21 19-Nov-21 0.35% 420,000,000 P-1 A-1 Switzerland BAYERISCHE LANDESBANK (NY BRANCH) 0727MCPB7 420,000,000 0.60% 1-Sep-21 1-Sep-21 0.08% 420,000,000 P-1 NR Germany (USA) 60710RD28 409,000,000 0.58% 10-Feb-22 10-Feb-22 0.16% 409,000,000 P-1 A-1 Japan BAYERISCHE LANDESBANK (NY BRANCH) 0727MCLX3 400,000,000 0.57% 2-Sep-21 2-Sep-21 0.11% 400,000,000 P-1 NR Germany NATIXIS (NY BRANCH) 63873QQK3 375,000,000 0.53% 1-Sep-21 5-Aug-22 0.22% 375,000,000 P-1 A-1 France BANK OF MONTREAL ( BRANCH) 06367C3U9 373,000,000 0.53% 22-Sep-21 21-Dec-21 0.24% 373,000,000 P-1 A-1 Canada BANK OF MONTREAL (CHICAGO BRANCH) 06367C4P9 372,000,000 0.53% 6-Oct-21 4-Jan-22 0.24% 372,000,000 P-1 A-1 Canada ROYAL BANK OF CANADA (NY BRANCH) 78012UZD0 350,000,000 0.50% 17-Sep-21 17-Dec-21 0.23% 350,000,000 (P)P-1 A-1+ Canada CREDIT INDUSTRIEL ET COMMERCIAL SA (NY BRANCH) 22536UU24 350,000,000 0.50% 8-Nov-21 6-May-22 0.17% 350,000,000 P-1 A-1 France NORINCHUKIN BANK (NY BRANCH) 65602YFA3 349,900,000 0.50% 8-Oct-21 8-Oct-21 0.15% 349,900,000 P-1 A-1 Japan CANADIAN IMPERIAL BANK OF COMMERCE (NY BRANCH) 13606CSQ8 325,000,000 0.46% 7-Sep-21 7-Jun-22 0.18% 325,000,000 P-1 A-1 Canada BANK OF MONTREAL (CHICAGO BRANCH) 06367CJ65 321,000,000 0.46% 15-Oct-21 15-Aug-22 0.17% 321,000,000 P-1 A-1 Canada BANK OF MONTREAL (CHICAGO BRANCH) 06367CEX1 305,000,000 0.43% 7-Sep-21 6-Jun-22 0.24% 305,000,000 P-1 A-1 Canada BANK OF MONTREAL (CHICAGO BRANCH) 06367CEH6 303,000,000 0.43% 16-Nov-21 16-May-22 0.17% 303,000,000 P-1 A-1 Canada BARCLAYS BANK PLC (NY BRANCH) 06742TXW1 300,000,000 0.43% 6-May-22 6-May-22 0.30% 300,000,000 P-1 A-1 United Kingdom SUMITOMO MITSUI TRUST BANK LTD (NY BRANCH) 86564GF55 300,000,000 0.43% 1-Sep-21 20-Jan-22 0.15% 300,000,000 P-1 A-1 Japan BANK (NY BRANCH) 85325VP38 300,000,000 0.43% 1-Sep-21 2-Sep-22 0.29% 300,000,000 P-1 A-1 United Kingdom BAYERISCHE LANDESBANK (NY BRANCH) 0727MCPD3 300,000,000 0.43% 2-Sep-21 2-Sep-21 0.08% 300,000,000 P-1 NR Germany CANADIAN IMPERIAL BANK OF COMMERCE (NY BRANCH) 13606CJU9 292,900,000 0.42% 14-Sep-21 13-Dec-21 0.22% 292,900,000 P-1 A-1 Canada NORINCHUKIN BANK (NY BRANCH) 65602YJR2 290,000,000 0.41% 25-Feb-22 25-Feb-22 0.18% 290,000,000 P-1 A-1 Japan BNP PARIBAS (NY BRANCH) 05586FLC9 288,000,000 0.41% 3-Jun-22 3-Jun-22 0.19% 288,000,000 P-1 A-1 France MIZUHO BANK LTD (NY BRANCH) 60710RX26 285,000,000 0.40% 26-Jan-22 26-Jan-22 0.15% 285,000,000 P-1 A-1 Japan BARCLAYS BANK PLC (NY BRANCH) 06742TWW2 281,000,000 0.40% 4-Mar-22 4-Mar-22 0.29% 281,000,000 P-1 A-1 United Kingdom NATIXIS (NY BRANCH) 63873QNT7 280,000,000 0.40% 10-Sep-21 10-Mar-22 0.20% 280,000,000 P-1 A-1 France TORONTO-DOMINION BANK (NY BRANCH) 89114WDM4 279,000,000 0.40% 14-Oct-21 15-Aug-22 0.21% 279,000,000 P-1 A-1+ Canada CANADIAN IMPERIAL BANK OF COMMERCE (NY BRANCH) 13606CLG7 268,100,000 0.38% 17-Sep-21 14-Jan-22 0.23% 268,100,000 P-1 A-1 Canada CREDIT SUISSE AG (NY BRANCH) 22552G3L2 250,000,000 0.36% 1-Sep-21 9-May-22 0.40% 249,912,752 P-1 A-1 Switzerland NORINCHUKIN BANK (NY BRANCH) 65602YLH1 250,000,000 0.36% 1-Sep-21 7-Jan-22 0.15% 250,000,000 P-1 A-1 Japan LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 51501HNW5 250,000,000 0.36% 2-Sep-21 2-Sep-21 0.10% 250,000,000 P-1 NR Germany BANK OF NOVA SCOTIA (HOUSTON BRANCH) 06417MQE8 242,000,000 0.34% 1-Sep-21 8-Jul-22 0.17% 242,000,000 P-1 A-1 Canada SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565CR35 241,000,000 0.34% 15-Nov-21 14-Feb-22 0.16% 241,000,000 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85325VG38 239,000,000 0.34% 3-Sep-21 3-Sep-21 0.15% 239,000,000 P-1 A-1 United Kingdom MIZUHO BANK LTD (NY BRANCH) 60710AWS7 237,000,000 0.34% 27-Oct-21 27-Oct-21 0.24% 237,000,000 P-1 A-1 Japan MUFG BANK LTD (NY BRANCH) 55380TNW6 236,000,000 0.34% 25-Oct-21 25-Oct-21 0.24% 236,000,000 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85325VF96 234,000,000 0.33% 1-Oct-21 1-Oct-21 0.16% 234,000,000 P-1 A-1 United Kingdom SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565CU64 233,000,000 0.33% 2-Dec-21 2-Dec-21 0.13% 233,000,000 P-1 A-1 Japan MUFG BANK LTD (NY BRANCH) 55380TNU0 228,000,000 0.32% 22-Oct-21 22-Oct-21 0.24% 228,000,000 P-1 A-1 Japan NORINCHUKIN BANK (NY BRANCH) 65602YEJ5 228,000,000 0.32% 27-Sep-21 27-Sep-21 0.18% 228,000,000 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85325VJ27 216,000,000 0.31% 1-Nov-21 1-Feb-22 0.17% 216,017,919 P-1 A-1 United Kingdom BANK OF MONTREAL (CHICAGO BRANCH) 06367C6V4 214,000,000 0.30% 1-Sep-21 11-Feb-22 0.25% 214,000,000 P-1 A-1 Canada BARCLAYS BANK PLC (NY BRANCH) 06742TXL5 200,000,000 0.28% 19-Apr-22 19-Apr-22 0.31% 200,000,000 P-1 A-1 United Kingdom BANK OF NOVA SCOTIA (HOUSTON BRANCH) 06417MPP4 200,000,000 0.28% 1-Sep-21 17-Jun-22 0.26% 200,000,000 P-1 A-1 Canada SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565CU98 200,000,000 0.28% 3-Dec-21 3-Dec-21 0.13% 200,000,000 P-1 A-1 Japan SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565C3J6 200,000,000 0.28% 1-Sep-21 4-Feb-22 0.16% 200,000,000 P-1 A-1 Japan MUFG BANK LTD (NY BRANCH) 55380TSM3 193,000,000 0.27% 28-Jan-22 28-Jan-22 0.23% 193,000,000 P-1 A-1 Japan SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565CE96 192,000,000 0.27% 1-Oct-21 1-Oct-21 0.14% 192,002,256 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85325VJ84 189,000,000 0.27% 20-Jan-22 20-Jan-22 0.25% 189,000,000 P-1 A-1 United Kingdom BANK OF MONTREAL (CHICAGO BRANCH) 06367C2Y2 186,000,000 0.26% 13-Sep-21 13-Dec-21 0.23% 186,000,000 P-1 A-1 Canada SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565C4G1 178,000,000 0.25% 1-Sep-21 29-Jul-22 0.23% 178,000,000 P-1 A-1 Japan CREDIT INDUSTRIEL ET COMMERCIAL (UK BRANCH) BRWGN41S4 174,000,000 0.25% 28-Jan-22 28-Jan-22 0.29% 173,790,367 P-1 A-1 France HSBC BANK USA NA 40435RKS9 170,000,000 0.24% 1-Sep-21 4-Feb-22 0.26% 170,000,000 P-1 A-1 United Kingdom HSBC BANK USA NA 40435RKJ9 166,750,000 0.24% 1-Sep-21 7-Jan-22 0.30% 166,750,000 P-1 A-1 United Kingdom MUFG BANK LTD (NY BRANCH) 55380TPB0 165,000,000 0.23% 27-Oct-21 27-Oct-21 0.24% 165,000,000 P-1 A-1 Japan BARCLAYS BANK PLC (NY BRANCH) 06742TXX9 160,000,000 0.23% 3-Mar-22 3-Mar-22 0.27% 160,000,000 P-1 A-1 United Kingdom STANDARD CHARTERED BANK (NY BRANCH) 85325VD64 152,100,000 0.22% 1-Oct-21 1-Oct-21 0.23% 152,100,000 P-1 A-1 United Kingdom STANDARD CHARTERED BANK (NY BRANCH) 85325VK82 150,000,000 0.21% 1-Feb-22 1-Feb-22 0.24% 150,000,000 P-1 A-1 United Kingdom SUMITOMO MITSUI TRUST BANK LTD (NY BRANCH) 86564GF48 150,000,000 0.21% 1-Sep-21 19-Jan-22 0.15% 150,000,000 P-1 A-1 Japan LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 51501HMH9 146,500,000 0.21% 7-Feb-22 7-Feb-22 0.17% 146,500,000 P-1 NR Germany SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565C3X5 145,000,000 0.21% 1-Sep-21 27-Jun-22 0.22% 145,000,000 P-1 A-1 Japan SUMITOMO MITSUI BANKING CORP (NY BRANCH) 86565B4S7 144,000,000 0.20% 12-Oct-21 12-Oct-21 0.21% 144,048,476 P-1 A-1 Japan MIZUHO BANK (USA) 60710RB61 144,000,000 0.20% 4-Mar-22 4-Mar-22 0.16% 144,000,000 P-1 A-1 Japan BANK USA 40054PFX8 140,000,000 0.20% 1-Sep-21 26-Jul-22 0.27% 140,000,000 P-1 A-1 2 of 5

UNAUDITED Schedule of Investments By Security Type BlackRock Cash Funds: Institutional Money Market Master Portfolio 31-Aug-21 Maturity or Final Yield or Amortized Cost Moody's S&P Position Description Identifier Par ($) Par (%) Geography Reset Maturity Coupon ($) Rating Rating

BANK OF AMERICA NA 06050TMX7 130,000,000 0.18% 1-Sep-21 8-Apr-22 0.25% 130,000,000 P-1 A-1 United States BANK OF MONTREAL (UK BRANCH) BRWJC88X3 129,800,000 0.18% 9-Mar-22 9-Mar-22 0.28% 129,608,728 P-1 A-1 Canada NA 17305TY30 125,000,000 0.18% 6-Jun-22 6-Jun-22 0.16% 125,000,000 P-1 A-1 United States MIZUHO BANK LTD (NY BRANCH) 60710RW68 112,000,000 0.16% 9-Dec-21 9-Dec-21 0.11% 112,000,000 P-1 A-1 Japan BANK OF MONTREAL (CHICAGO BRANCH) 06367CA31 110,000,000 0.16% 23-Nov-21 23-Feb-22 0.18% 110,000,000 P-1 A-1 Canada CREDIT SUISSE AG (NY BRANCH) 22552G3D0 100,000,000 0.14% 29-Dec-21 29-Dec-21 0.30% 100,000,000 P-1 A-1 Switzerland CANADIAN IMPERIAL BANK OF COMMERCE (NY BRANCH) 13606CKE3 100,000,000 0.14% 4-Oct-21 3-Jan-22 0.25% 100,000,000 P-1 A-1 Canada BAYERISCHE LANDESBANK (NY BRANCH) 0727MCLT2 100,000,000 0.14% 25-Feb-22 25-Feb-22 0.20% 100,000,000 P-1 NR Germany NORINCHUKIN BANK (NY BRANCH) 65602YJQ4 100,000,000 0.14% 22-Nov-21 22-Nov-21 0.15% 99,999,999 P-1 A-1 Japan BANK OF NOVA SCOTIA (HOUSTON BRANCH) 06417MQQ1 100,000,000 0.14% 1-Sep-21 30-Jun-22 0.20% 99,991,564 P-1 A-1 Canada SOCIETE GENERALE (NY BRANCH) 83369X4J4 100,000,000 0.14% 7-Oct-21 7-Oct-21 0.12% 100,000,000 P-1 A-1 France HSBC BANK USA NA 40435RKF7 92,875,000 0.13% 4-Jan-22 3-Jan-22 0.38% 92,875,000 P-1 A-1 United Kingdom CREDIT SUISSE AG (NY BRANCH) 22552G2M1 93,000,000 0.13% 15-Feb-22 15-Feb-22 0.24% 93,000,000 P-1 A-1 Switzerland SUMITOMO MITSUI TRUST BANK LTD (NY BRANCH) 86564GZV6 90,000,000 0.13% 4-Jan-22 3-Jan-22 0.16% 90,000,000 P-1 A-1 Japan WESTPAC BANKING CORPORATION (NY BRANCH) 96130AJL3 89,250,000 0.13% 16-Sep-21 16-Mar-22 0.16% 89,250,000 P-1 NR Australia NA 06050TMY5 65,250,000 0.09% 1-Sep-21 8-Jul-22 0.22% 65,250,000 P-1 A-1 United States KOOKMIN BANK (NEW YORK) 48668MP80 60,000,000 0.09% 7-Sep-21 7-Feb-22 0.33% 60,000,000 P-1 A-1 Korea (South), Rep. LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 51501HNZ8 50,000,000 0.07% 3-Sep-21 3-Sep-21 0.10% 50,000,000 P-1 NR Germany MUFG BANK LTD (NY BRANCH) 55380TSD3 49,000,000 0.07% 13-Jan-22 13-Jan-22 0.24% 49,000,000 P-1 A-1 Japan BANK OF MONTREAL (CHICAGO BRANCH) 06367BTQ2 42,000,000 0.06% 6-Oct-21 6-Oct-21 0.18% 42,000,000 P-1 A-1 Canada

Non-Negotiable Time Deposit 17,915,000,000 25.44% 17,915,000,000 KBC BANK NV (NY BRANCH) BRWSBAKF4 2,600,000,000 3.69% 1-Sep-21 1-Sep-21 0.05% 2,600,000,000 P-1 A-1 Belgium SKANDINAVISKA ENSKILDA BANKEN AB ( BRWSBAMN5 2,321,000,000 3.30% 1-Sep-21 1-Sep-21 0.05% 2,321,000,000 P-1 A-1 Sweden (NY BRANCH) BRWSB58S1 2,200,000,000 3.12% 1-Sep-21 1-Sep-21 0.05% 2,200,000,000 P-1 A-1 Sweden CREDIT AGRICOLE CORPORATE AND INVE BRWSBAL89 1,652,000,000 2.35% 1-Sep-21 1-Sep-21 0.05% 1,652,000,000 P-1 A-1 France SA (NEW YORK BRANC BRWSB50Z3 1,500,000,000 2.13% 1-Sep-21 1-Sep-21 0.08% 1,500,000,000 P-1 A-1 Spain MIZUHO BANK LTD (NY BRANCH) BRWSB3HQ0 853,000,000 1.21% 1-Sep-21 1-Sep-21 0.08% 853,000,000 P-1 A-1 Japan ABN AMRO BANK NV BRWS3XM61 808,000,000 1.15% 2-Sep-21 2-Sep-21 0.09% 808,000,000 P-1 A-1 Netherlands BANK AG (NEW YORK BRAN BRWSB4KZ4 556,000,000 0.79% 1-Sep-21 1-Sep-21 0.07% 556,000,000 P-1 A-1 Austria ABN AMRO BANK NV BRWS0MEJ9 552,000,000 0.78% 1-Sep-21 1-Sep-21 0.09% 552,000,000 P-1 A-1 Netherlands ABN AMRO BANK NV BRWSB51P4 547,000,000 0.78% 7-Sep-21 7-Sep-21 0.09% 547,000,000 P-1 A-1 Netherlands ROYAL BANK OF CANADA (TORONTO BRAN BRWSBAT99 517,000,000 0.73% 1-Sep-21 1-Sep-21 0.05% 517,000,000 P-1 A-1+ Canada ING BANK NV (AMSTERDAM BRANCH) BRWS9D7K5 500,000,000 0.71% 3-Sep-21 3-Sep-21 0.08% 500,000,000 P-1 A-1 Netherlands LANDESBANK HESSEN-THUERINGEN GIROZ BRWS0R582 500,000,000 0.71% 1-Sep-21 1-Sep-21 0.13% 500,000,000 P-1 A-2 Germany CREDIT AGRICOLE CORPORATE AND INVE BRWS9FH94 406,000,000 0.58% 3-Sep-21 3-Sep-21 0.11% 406,000,000 P-1 A-1 France LANDESBANK HESSEN-THUERINGEN GIROZ BRWS77UX6 400,000,000 0.57% 3-Sep-21 3-Sep-21 0.13% 400,000,000 P-1 A-2 Germany LANDESBANK HESSEN-THUERINGEN GIROZ BRWSB9N56 400,000,000 0.57% 7-Sep-21 7-Sep-21 0.13% 400,000,000 P-1 A-2 Germany ABN AMRO BANK NV BRWS9CVL8 364,000,000 0.52% 3-Sep-21 3-Sep-21 0.08% 364,000,000 P-1 A-1 Netherlands LANDESBANK HESSEN-THUERINGEN GIROZ BRWSBBDM5 308,000,000 0.44% 1-Sep-21 1-Sep-21 0.10% 308,000,000 P-1 A-2 Germany ABN AMRO BANK NV BRWS72G13 294,000,000 0.42% 3-Sep-21 3-Sep-21 0.09% 294,000,000 P-1 A-1 Netherlands LANDESBANK HESSEN-THUERINGEN GIROZ BRWS44415 250,000,000 0.36% 2-Sep-21 2-Sep-21 0.13% 250,000,000 P-1 A-2 Germany NATIXIS SA BRWSB3HW7 200,000,000 0.28% 1-Sep-21 1-Sep-21 0.07% 200,000,000 P-1 A-1 France SVENSKA AB (NEW YORK BRWSBC5V2 130,000,000 0.18% 1-Sep-21 1-Sep-21 0.05% 130,000,000 P-1 A-1+ Sweden DNB BANK ASA BRWSB58A0 50,000,000 0.07% 1-Sep-21 1-Sep-21 0.05% 50,000,000 P-1 A-1+ Norway NATIXIS SA BRWSBEA26 7,000,000 0.01% 1-Sep-21 1-Sep-21 0.06% 7,000,000 P-1 A-1 France

Tender Option Bond 770,059,775 1.09% 770,059,775 MUNICIPAL FDG TR VAR STS 144A 62630WEL7 124,610,000 0.18% 5-Oct-21 5-Oct-21 P 0.30% 124,610,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WDX2 95,050,000 0.13% 5-Oct-21 5-Oct-21 P 0.29% 95,050,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WBA4 81,220,000 0.12% 5-Oct-21 5-Oct-21 P 0.27% 81,220,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WFV4 74,500,000 0.11% 5-Oct-21 5-Oct-21 P 0.30% 74,500,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WAS6 59,710,000 0.08% 7-Sep-21 7-Sep-21 P 0.13% 59,710,000 NR A-1 United States MIZUHO FLOATER / RESIDUAL TR V 144A 60700HGC7 42,500,000 0.06% 5-Oct-21 5-Oct-21 P 0.41% 42,500,000 NR A-1 Japan MUNICIPAL FDG TR VAR STS 144A 62630WET0 40,085,000 0.06% 22-Sep-21 22-Sep-21 P 0.14% 40,085,000 NR A-1 United Kingdom MIZUHO FLOATER / RESIDUAL TR V 144A 60700HEC9 37,000,000 0.05% 5-Oct-21 5-Oct-21 P 0.35% 37,000,000 NR A-1 Japan MIZUHO FLOATER/RESIDUAL TRUSTVARIO 144A 60700HFG9 34,170,000 0.05% 7-Sep-21 7-Sep-21 P 0.26% 34,170,000 NR A-1 Japan ARIZONA INDL DEV AUTH WHITE OA 144A 60700HGX1 30,455,383 0.04% 5-Oct-21 5-Oct-21 P 0.41% 30,455,383 NR A-1 Japan MIZUHO FLOATER / RESIDUAL TR V 144A 60700HFQ7 18,739,392 0.03% 5-Oct-21 5-Oct-21 P 0.35% 18,739,392 NR A-1 Japan TENDER OPT BD TR RCPTS / CTFS 144A 88034XUT7 18,000,000 0.03% 7-Sep-21 7-Sep-21 P 0.12% 18,000,000 NR A-1 United States MUNICIPAL FDG TR VAR STS 144A 62630WGF8 16,920,000 0.02% 5-Oct-21 5-Oct-21 P 0.30% 16,920,000 NR A-1 United Kingdom TENDER OPT BD TR RCPTS / CTFS 144A 88034W7M0 16,005,000 0.02% 7-Sep-21 7-Sep-21 P 0.12% 16,005,000 VMIG1 NR United States MUNICIPAL FDG TR VAR STS 144A 62630WHA8 16,000,000 0.02% 7-Sep-21 7-Sep-21 P 0.29% 16,000,000 NR A-1 United Kingdom RIB FLOATER TR VARIOUS STS 144A 76252PGB9 15,695,000 0.02% 1-Sep-21 5-Oct-21 P 0.27% 15,695,000 VMIG1 A-1 United Kingdom NATIONAL FIN AUTH N H INDL DEV 144A 63609FAB5 12,500,000 0.02% 7-Sep-21 7-Sep-21 P 0.14% 12,500,000 P-1 A-1 Korea (South), Rep. MUNICIPAL FDG TR VAR STS 144A 62630WCQ8 8,155,000 0.01% 5-Oct-21 5-Oct-21 P 0.29% 8,155,000 NR A-1 United Kingdom PUBLIC FIN AUTH WIS HEALTHCARE 144A 62630WCW5 6,145,000 0.01% 5-Oct-21 5-Oct-21 P 0.29% 6,145,000 VMIG1 A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WFM4 5,500,000 0.01% 5-Oct-21 5-Oct-21 P 0.29% 5,500,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WAC1 4,000,000 0.01% 5-Oct-21 5-Oct-21 P 0.27% 4,000,000 VMIG1 A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WAK3 3,270,000 0.00% 7-Sep-21 7-Sep-21 P 0.13% 3,270,000 NR A-1 United Kingdom MIZUHO FLOATER / RESIDUAL TR V 144A 60700HHK8 2,905,000 0.00% 5-Oct-21 5-Oct-21 P 0.49% 2,905,000 NR A-1 Japan 3 of 5

UNAUDITED Schedule of Investments By Security Type BlackRock Cash Funds: Institutional Money Market Master Portfolio 31-Aug-21 Maturity or Final Yield or Amortized Cost Moody's S&P Position Description Identifier Par ($) Par (%) Geography Reset Maturity Coupon ($) Rating Rating

TENDER OPT BD TR RCPTS / CTFS 144A 88034YFU9 2,500,000 0.00% 7-Sep-21 7-Sep-21 P 0.12% 2,500,000 NR A-1 United States MUNICIPAL FDG TR VAR STS 144A 62630WCZ8 2,430,000 0.00% 5-Oct-21 5-Oct-21 P 0.29% 2,430,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WDX2 1,895,000 0.00% 5-Oct-21 5-Oct-21 P 0.29% 1,895,000 NR A-1 United Kingdom MUNICIPAL FDG TR VAR STS 144A 62630WEL7 100,000 0.00% 5-Oct-21 5-Oct-21 P 0.30% 100,000 NR A-1 United Kingdom

Variable Rate Demand Note 195,125,000 0.28% 195,125,000 JETS STADIUM FINANCE ISSUER 2015 L 144A 477182AA7 119,470,000 0.17% 7-Sep-21 7-Sep-21 P 0.13% 119,470,000 VMIG1 A-1 Japan JETS STADIUM DEVELOPMENT LLC 477181AJ0 39,155,000 0.06% 7-Sep-21 7-Sep-21 P 0.13% 39,155,000 VMIG1 A-1 Japan JETS STADIUM DEVELOPMENT LLC 477181AL5 34,100,000 0.05% 7-Sep-21 7-Sep-21 P 0.13% 34,100,000 VMIG1 A-1 Japan JETS STADIUM DEVELOPMENT LLC 477181AK7 2,400,000 0.00% 7-Sep-21 7-Sep-21 P 0.13% 2,400,000 VMIG1 A-1 Japan

Asset Backed Commercial Paper 3,996,945,000 5.68% 3,995,841,959 BENNINGTON STARK CAPITAL COMPANY LLC 08224LW10 670,045,000 0.95% 1-Sep-21 1-Sep-21 0.09% 670,043,325 P-1 A-1 France CROWN POINT CAPITAL COMPANY LLC 22845ATZ3 447,500,000 0.64% 8-Sep-21 8-Dec-21 0.29% 447,500,000 P-1 A-1 Switzerland CROWN POINT CAPITAL COMPANY LLC 2284K0X59 397,400,000 0.56% 5-Oct-21 5-Oct-21 0.30% 397,284,090 P-1 A-1 Switzerland CROWN POINT CAPITAL COMPANY LLC 2284K0X18 353,000,000 0.50% 1-Oct-21 1-Oct-21 0.30% 352,908,810 P-1 A-1 Switzerland CONCORD MINUTEMEN CAPITAL CO LLC SERIES 20632KW13 297,000,000 0.42% 1-Sep-21 1-Sep-21 0.15% 296,998,762 P-1 A-1 United States RIDGEFIELD FUNDING COMPANY LLC 76582KC25 238,000,000 0.34% 2-Mar-22 2-Mar-22 0.17% 237,794,328 P-1 A-1 France BENNINGTON STARK CAPITAL COMPANY LLC 08224LW77 200,000,000 0.28% 7-Sep-21 7-Sep-21 0.09% 199,996,000 P-1 A-1 France RIDGEFIELD FUNDING COMPANY LLC 76582JY16 200,000,000 0.28% 1-Nov-21 1-Nov-21 0.24% 199,917,334 P-1 A-1 France RIDGEFIELD FUNDING COMPANY LLC 76582KE31 155,000,000 0.22% 3-May-22 3-May-22 0.20% 154,789,028 P-1 A-1 France LEGACY CAPITAL COMPANY LLC 52473GAG8 150,000,000 0.21% 5-Nov-21 31-Aug-21 0.20% 150,000,000 P-1 A-1 Australia LEGACY CAPITAL COMPANY LLC 52473GAJ2 150,000,000 0.21% 9-Feb-22 5-Nov-21 0.20% 150,000,000 P-1 A-1 Australia RIDGEFIELD FUNDING COMPANY LLC 76582KCE9 120,000,000 0.17% 14-Mar-22 14-Mar-22 0.17% 119,889,500 P-1 A-1 France BEDFORD ROW FUNDING CORP 07644AW18 112,000,000 0.16% 1-Sep-21 1-Sep-21 0.07% 111,999,783 P-1 A-1+ Canada LONGSHIP FUNDING LLC 54316TW73 100,000,000 0.14% 7-Sep-21 7-Sep-21 0.06% 99,998,667 P-1 A-1+ Finland ALINGHI FUNDING COMPANY LLC 01626FX86 93,000,000 0.13% 8-Oct-21 8-Oct-21 0.29% 92,971,532 P-1 A-1 Switzerland ALINGHI FUNDING COMPANY LLC 01627DAB8 81,000,000 0.12% 25-Apr-22 25-Apr-22 0.23% 80,877,352 P-1 A-1 Switzerland IONIC CAPITAL III TRUST 46220WW36 80,000,000 0.11% 3-Sep-21 3-Sep-21 0.07% 79,999,793 P-1 A-1 Switzerland RIDGEFIELD FUNDING COMPANY LLC 76582KC74 50,000,000 0.07% 7-Mar-22 7-Mar-22 0.17% 49,955,611 P-1 A-1 France OLD LINE FUNDING LLC 67983TW10 37,000,000 0.05% 1-Sep-21 1-Sep-21 0.05% 36,999,897 P-1 A-1+ Canada RIDGEFIELD FUNDING COMPANY LLC 76582KBJ9 35,000,000 0.05% 18-Feb-22 18-Feb-22 0.21% 34,965,088 P-1 A-1 France ALINGHI FUNDING COMPANY LLC 01627C2B9 31,000,000 0.04% 25-Apr-22 25-Apr-22 0.23% 30,953,061 P-1 A-1 Switzerland

U.S. Treasury Repurchase Agreement 2,790,000,000 3.96% 2,790,000,000 TRI-PARTY BANK OF BRWSCCTJ2 2,700,000,000 3.83% 1-Sep-21 1-Sep-21 0.05% 2,700,000,000 NR A-1+ United States TRI-PARTY CREDIT AGRICOLE CORPORAT BRWSBBJV9 63,000,000 0.09% 1-Sep-21 1-Sep-21 0.05% 63,000,000 P-1 A-1 United States TRI-PARTY GLOBAL MARKETS BRWSBBK47 27,000,000 0.04% 1-Sep-21 1-Sep-21 0.05% 27,000,000 P-1 A-1 United States

U.S. Government Agency Repurchase Agreement 1,362,768,000 1.94% 1,362,768,000 TRI-PARTY BOFA SECURITIES INC. BRWSBBJR8 773,768,000 1.10% 1-Sep-21 1-Sep-21 0.05% 773,768,000 NR A-1 United States TRI-PARTY J.P. MORGAN SECURITIES L BRWJ1Z1E4 249,000,000 0.35% 1-Sep-21 7-Sep-21 P 0.08% 249,000,000 P-1 A-1 United States TRI-PARTY CITIGROUP GLOBAL MARKETS BRWSBBK13 215,000,000 0.31% 1-Sep-21 1-Sep-21 0.06% 215,000,000 P-1 A-1 United States TRI-PARTY BOFA SECURITIES INC BRT5CVLE3 115,000,000 0.16% 1-Sep-21 1-Sep-21 0.17% 115,000,000 NR A-1 United States TRI-PARTY CREDIT AGRICOLE CIB (NEW BRWSBBKY1 10,000,000 0.01% 1-Sep-21 1-Sep-21 0.05% 10,000,000 P-1 A-1 United States

Other Repurchase Agreement 6,785,000,000 9.64% 6,785,000,000 TRI-PARTY CREDIT AGRICOLE CORPORAT BRWRNDEA5 773,000,000 1.10% 1-Sep-21 7-Sep-21 P 0.14% 773,000,000 P-1 A-1 France TRI-PARTY J.P. MORGAN SECURITIES L BRW4JJTB0 735,000,000 1.04% 1-Sep-21 7-Sep-21 P 0.37% 735,000,000 P-1 A-1 United States TRI-PARTY CREDIT SUISSE SECURITIES BRW4JGBV1 556,000,000 0.79% 1-Sep-21 4-Dec-21 P 0.67% 556,000,000 NR A-1 Switzerland TRI-PARTY BARCLAYS BANK PLC BRW767N78 409,000,000 0.58% 1-Sep-21 1-Sep-21 0.17% 409,000,000 P-1 A-1 United Kingdom TRI-PARTY J.P. MORGAN SECURITIES L BRW2XJPL0 400,000,000 0.57% 1-Sep-21 7-Sep-21 P 0.42% 400,000,000 P-1 A-1 United States TRI-PARTY SECURITIES L BRTRFGQB6 390,000,000 0.55% 1-Sep-21 1-Sep-21 0.19% 390,000,000 NR A-1 United States TRI-PARTY BOFA SECURITIES INC. BRWHFRU25 305,000,000 0.43% 1-Sep-21 5-Oct-21 P 0.39% 305,000,000 NR A-1 United States TRI-PARTY J.P. MORGAN SECURITIES L BRT7ERCY2 285,000,000 0.40% 1-Sep-21 1-Sep-21 0.17% 285,000,000 P-1 A-1 United States TRI-PARTY BARCLAYS CAPITAL INC. BRWL2H6D5 226,000,000 0.32% 1-Sep-21 5-Oct-21 P 0.30% 226,000,000 NR A-1 United Kingdom TRI-PARTY BNP PARIBAS BRT5BLP44 219,000,000 0.31% 1-Sep-21 1-Sep-21 0.17% 219,000,000 P-1 A-1 France TRI-PARTY J.P. MORGAN SECURITIES L BRW1ZAUR0 205,000,000 0.29% 1-Sep-21 29-Nov-21 P 0.47% 205,000,000 P-1 A-1 United States TRI-PARTY CITIGROUP GLOBAL MARKETS BRWNP9560 179,000,000 0.25% 1-Sep-21 1-Dec-21 P 0.37% 179,000,000 P-1 A-1 United States TRI-PARTY J.P. MORGAN SECURITIES L BRT83C390 175,000,000 0.25% 1-Sep-21 30-Nov-21 P 0.42% 175,000,000 P-1 A-1 United States TRI-PARTY CREDIT AGRICOLE CORPORAT BRWS6X583 163,000,000 0.23% 3-Sep-21 3-Sep-21 0.14% 163,000,000 P-1 A-1 France TRI-PARTY BOFA SECURITIES INC. BRWHFV7H9 160,000,000 0.23% 1-Sep-21 4-Nov-21 P 0.67% 160,000,000 NR A-1 United States TRI-PARTY TD SECURITIES (USA) LLC BRWPU4NG8 145,000,000 0.21% 1-Sep-21 1-Sep-21 0.15% 145,000,000 NR A-1+ Canada TRI-PARTY BARCLAYS BANK PLC BRWRJSTR4 137,000,000 0.19% 1-Sep-21 1-Sep-21 0.29% 137,000,000 P-1 A-1 United Kingdom TRI-PARTY J.P. MORGAN SECURITIES L BRT7G0VZ5 115,000,000 0.16% 1-Sep-21 1-Sep-21 0.19% 115,000,000 P-1 A-1 United States TRI-PARTY BOFA SECURITIES INC. BRWLRUWP3 100,000,000 0.14% 1-Sep-21 5-Oct-21 P 0.32% 100,000,000 NR A-1 United States TRI-PARTY WELLS FARGO SECURITIES L BRTHF8JR9 100,000,000 0.14% 1-Sep-21 1-Sep-21 0.17% 100,000,000 NR A-1 United States TRI-PARTY CITIGROUP GLOBAL MARKETS BRT5BL5U8 100,000,000 0.14% 1-Sep-21 1-Sep-21 0.12% 100,000,000 P-1 A-1 United States TRI-PARTY WELLS FARGO SECURITIES L BRWS9GQZ4 90,000,000 0.13% 29-Nov-21 29-Nov-21 0.27% 90,000,000 NR A-1 United States TRI-PARTY J.P. MORGAN SECURITIES L BRT7G0WU5 90,000,000 0.13% 1-Sep-21 1-Sep-21 0.42% 90,000,000 P-1 A-1 United States TRI-PARTY J.P. MORGAN SECURITIES L BRT7ER652 90,000,000 0.13% 1-Sep-21 1-Sep-21 0.25% 90,000,000 P-1 A-1 United States 4 of 5

UNAUDITED Schedule of Investments By Security Type BlackRock Cash Funds: Institutional Money Market Master Portfolio 31-Aug-21 Maturity or Final Yield or Amortized Cost Moody's S&P Position Description Identifier Par ($) Par (%) Geography Reset Maturity Coupon ($) Rating Rating

TRI-PARTY WELLS FARGO SECURITIES L BRWNBXGH6 85,000,000 0.12% 7-Sep-21 7-Sep-21 0.47% 85,000,000 NR A-1 United States TRI-PARTY BNP PARIBAS BRWS9HCA2 85,000,000 0.12% 1-Sep-21 4-Dec-21 P 0.42% 85,000,000 P-1 A-1 France TRI-PARTY WELLS FARGO SECURITIES L BRWS7EV51 80,500,000 0.11% 3-Sep-21 3-Sep-21 0.22% 80,500,000 NR A-1 United States TRI-PARTY BARCLAYS BANK PLC BRW563WG1 71,500,000 0.10% 1-Sep-21 4-Dec-21 P 0.57% 71,500,000 P-1 A-1 United Kingdom TRI-PARTY BARCLAYS CAPITAL INC. BRW562EW8 71,500,000 0.10% 1-Sep-21 4-Dec-21 P 0.57% 71,500,000 NR A-1 United Kingdom TRI-PARTY MIZUHO SECURITIES USA LL BRWPKV249 67,000,000 0.10% 1-Sep-21 5-Oct-21 P 0.48% 67,000,000 P-1 A-1 Japan TRI-PARTY WELLS FARGO SECURITIES L BRWRJT2T7 50,000,000 0.07% 12-Nov-21 12-Nov-21 0.27% 50,000,000 NR A-1 United States TRI-PARTY MIZUHO SECURITIES USA LL BRWPKUN63 40,000,000 0.06% 1-Sep-21 30-Nov-21 P 0.52% 40,000,000 P-1 A-1 Japan TRI-PARTY HSBC SECURITIES (USA) IN BRTK3MYH9 34,000,000 0.05% 1-Sep-21 1-Sep-21 0.19% 34,000,000 NR A-1 United Kingdom TRI-PARTY HSBC SECURITIES (USA) IN BRTK3N6N5 29,500,000 0.04% 1-Sep-21 1-Sep-21 0.27% 29,500,000 NR A-1 United Kingdom TRI-PARTY MIZUHO SECURITIES USA LL BRTC49TA6 24,000,000 0.03% 1-Sep-21 1-Sep-21 0.22% 24,000,000 P-1 A-1 Japan

Financial Company Commercial Paper 14,557,708,000 20.68% 14,550,524,093 LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 5148X0W19 1,900,000,000 2.70% 1-Sep-21 1-Sep-21 0.08% 1,899,994,718 P-1 NR Germany SOCIETE GENERALE SA 83368YFY8 470,000,000 0.67% 10-Jan-22 10-Jan-22 0.32% 469,448,535 P-1 A-1 France UBS AG (UK BRANCH) 90276JNA0 430,000,000 0.61% 1-Sep-21 13-Jul-22 0.24% 430,000,000 P-1 A-1 Switzerland GOLDMAN SACHS INTERNATIONAL 38150TZN7 420,800,000 0.60% 22-Dec-21 22-Dec-21 0.35% 420,337,705 P-1 A-1 United States HSBC BANK PLC 40433HB20 400,000,000 0.57% 2-Feb-22 2-Feb-22 0.27% 399,535,000 P-1 A-1 United Kingdom NATIONWIDE BUILDING SOCIETY 6385E0WT6 370,000,000 0.53% 27-Sep-21 27-Sep-21 0.07% 369,980,575 P-1 A-1 United Kingdom DNB BANK ASA 2332K0X15 360,000,000 0.51% 1-Oct-21 1-Oct-21 0.11% 359,967,449 P-1 A-1+ Norway BANCO SANTANDER SA 05970RX18 354,000,000 0.50% 1-Oct-21 1-Oct-21 0.13% 353,960,373 P-1 A-1 Spain HSBC BANK PLC 40433HA39 319,000,000 0.45% 4-Jan-22 3-Jan-22 0.33% 318,634,480 P-1 A-1 United Kingdom BAYERISCHE LANDESBANK (NY BRANCH) 07274LW37 300,000,000 0.43% 3-Sep-21 3-Sep-21 0.07% 299,998,251 P-1 NR Germany UNITED OVERSEAS BANK LTD 91127QEX3 291,000,000 0.41% 31-May-22 31-May-22 0.18% 290,602,785 P-1 A-1+ Singapore BANCO SANTANDER SA 05970RX67 288,000,000 0.41% 6-Oct-21 6-Oct-21 0.13% 287,962,560 P-1 A-1 Spain HSBC BANK PLC 40433HA70 281,000,000 0.40% 7-Jan-22 7-Jan-22 0.31% 280,687,857 P-1 A-1 United Kingdom BPCE SA 05571BZ14 268,800,000 0.38% 1-Dec-21 1-Dec-21 0.34% 268,569,878 P-1 A-1 France SKANDINAVISKA ENSKILDA BANKEN AB 83050UDM7 245,000,000 0.35% 21-Apr-22 21-Apr-22 0.24% 244,619,434 P-1 A-1 Sweden ING US FUNDING LLC 4497W0Z35 241,000,000 0.34% 3-Dec-21 3-Dec-21 0.11% 240,930,780 P-1 A-1 Netherlands ING US FUNDING LLC 45685QZF9 238,000,000 0.34% 15-Dec-21 15-Dec-21 0.30% 237,793,271 P-1 A-1 Netherlands CITIGROUP GLOBAL MARKETS INC 17327BF34 237,000,000 0.34% 3-Jun-22 3-Jun-22 0.19% 236,654,769 P-1 A-1 United States BANK OF MONTREAL 06367JXE7 219,000,000 0.31% 14-Oct-21 14-Oct-21 0.11% 218,970,558 P-1 A-1 Canada BANCO SANTANDER SA 05970RZ73 210,000,000 0.30% 7-Dec-21 7-Dec-21 0.14% 209,919,967 P-1 A-1 Spain UBS AG (UK BRANCH) 90351XGC1 205,000,000 0.29% 12-Jul-22 12-Jul-22 0.25% 204,551,562 P-1 A-1 Switzerland BNG BANK NV 09657RW29 201,000,000 0.29% 2-Sep-21 2-Sep-21 0.07% 200,999,274 P-1 A-1+ Netherlands MACQUARIE BANK LTD 55607NHZ6 200,000,000 0.28% 29-Oct-21 29-Oct-21 0.14% 199,996,758 P-1 A-1 Australia UBS AG (UK BRANCH) 90276JMK9 200,000,000 0.28% 1-Sep-21 5-Apr-22 0.29% 200,000,000 P-1 A-1 Switzerland SUMITOMO MITSUI TRUST BANK LTD (SINGAPORE BRANCH) 86564YWF5 200,000,000 0.28% 15-Sep-21 15-Sep-21 0.11% 199,991,250 P-1 A-1 Japan MIZUHO BANK LTD (SINGAPORE BRANCH) 60689QA79 200,000,000 0.28% 7-Jan-22 7-Jan-22 0.17% 199,878,166 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85324UEL3 194,000,000 0.28% 20-May-22 20-May-22 0.22% 193,689,385 P-1 A-1 United Kingdom MITSUBISHI UFJ TRUST AND BANKING CORP (SINGAPORE BRANCH) 60682YY99 193,000,000 0.27% 9-Nov-21 9-Nov-21 0.12% 192,954,967 P-1 A-1 Japan STANDARD CHARTERED BANK (NY BRANCH) 85324UE41 192,000,000 0.27% 4-May-22 4-May-22 0.25% 191,672,001 P-1 A-1 United Kingdom MACQUARIE BANK LTD 55607KZ17 190,000,000 0.27% 1-Dec-21 1-Dec-21 0.13% 189,936,878 P-1 A-1 Australia MACQUARIE BANK LTD 55607KZA7 190,000,000 0.27% 10-Dec-21 10-Dec-21 0.13% 189,930,703 P-1 A-1 Australia ERSTE FINANCE (DELAWARE) LLC 2960E2W17 185,000,000 0.26% 1-Sep-21 1-Sep-21 0.07% 184,999,281 P-1 A-1 Austria BPCE SA 05571BZF3 175,000,000 0.25% 15-Dec-21 15-Dec-21 0.12% 174,940,743 P-1 A-1 France MACQUARIE BANK LTD 55607LAR5 175,000,000 0.25% 25-Jan-22 25-Jan-22 0.17% 174,882,094 P-1 A-1 Australia UBS AG (UK BRANCH) 90276JLY0 170,000,000 0.24% 2-Sep-21 2-Dec-21 0.30% 170,000,000 P-1 A-1 Switzerland WESTPAC SECURITIES NZ LTD 96122GXF7 170,000,000 0.24% 15-Oct-21 15-Oct-21 0.21% 169,955,375 P-1 A-1+ Australia OVERSEA-CHINESE BANKING CORPORATION LTD 69034CLV8 166,000,000 0.24% 1-Sep-21 29-Oct-21 0.20% 166,000,000 P-1 A-1+ Singapore BNZ INTERNATIONAL FUNDING LTD 0556X4GX8 165,000,000 0.23% 1-Sep-21 22-Nov-21 0.30% 165,000,000 NR A-1+ Australia SVENSKA HANDELSBANKEN AB 86960JZ81 165,000,000 0.23% 8-Dec-21 8-Dec-21 0.30% 164,863,875 P-1 A-1+ Sweden GOLDMAN SACHS INTERNATIONAL 38150TZ64 157,000,000 0.22% 6-Dec-21 6-Dec-21 0.32% 156,864,631 P-1 A-1 United States LTD 63254GQP3 150,000,000 0.21% 29-Sep-21 29-Mar-22 0.19% 150,000,000 P-1 A-1+ Australia BAYERISCHE LANDESBANK (NY BRANCH) 07274LW29 150,000,000 0.21% 2-Sep-21 2-Sep-21 0.08% 149,999,334 P-1 NR Germany CREDIT LOCAL - (ST) GTD 25215WC13 150,000,000 0.21% 1-Mar-22 1-Mar-22 0.17% 149,871,084 P-1 A-1+ Belgium BNZ INTERNATIONAL FUNDING LTD (UK BRANCH) 0556X1AR3 148,500,000 0.21% 25-Jan-22 25-Jan-22 0.21% 148,372,661 P-1 A-1+ Australia SWEDBANK AB 87019RZN9 139,750,000 0.20% 22-Dec-21 22-Dec-21 0.12% 139,697,360 P-1 A-1 Sweden UBS AG (UK BRANCH) 90276JMD5 135,000,000 0.19% 1-Sep-21 10-Feb-22 0.25% 135,000,000 P-1 A-1 Switzerland ING US FUNDING LLC 45685QZE2 127,000,000 0.18% 14-Dec-21 14-Dec-21 0.30% 126,890,727 P-1 A-1 Netherlands SUMITOMO MITSUI TRUST BANK LTD (SINGAPORE BRANCH) 86564YW32 125,000,000 0.18% 3-Sep-21 3-Sep-21 0.11% 124,998,906 P-1 A-1 Japan SUMITOMO MITSUI TRUST BANK LTD (SINGAPORE BRANCH) 86564YWG3 119,000,000 0.17% 16-Sep-21 16-Sep-21 0.11% 118,994,446 P-1 A-1 Japan NATIONAL AUSTRALIA BANK LTD 63254GQQ1 118,000,000 0.17% 1-Sep-21 14-Apr-22 0.25% 118,000,000 P-1 A-1+ Australia SKANDINAVISKA ENSKILDA BANKEN AB 83050UBJ6 110,000,000 0.16% 18-Feb-22 18-Feb-22 0.15% 109,921,625 P-1 A-1 Sweden UBS AG (UK BRANCH) 90276JMC7 108,000,000 0.15% 1-Sep-21 8-Feb-22 0.25% 108,000,000 P-1 A-1 Switzerland CANADIAN IMPERIAL BANK OF COMMERCE 13608AW36 100,000,000 0.14% 3-Sep-21 3-Sep-21 0.06% 99,999,500 P-1 A-1 Canada LANDESBANK BADEN WUERTTEMBERG (NY BRANCH) 5148X0W76 100,000,000 0.14% 7-Sep-21 7-Sep-21 0.08% 99,998,222 P-1 NR Germany MACQUARIE BANK LTD 55607KWF9 100,000,000 0.14% 15-Sep-21 15-Sep-21 0.10% 99,995,833 P-1 A-1 Australia SKANDINAVISKA ENSKILDA BANKEN AB 83050TY13 100,000,000 0.14% 1-Nov-21 1-Nov-21 0.19% 99,967,278 P-1 A-1 Sweden UNITED OVERSEAS BANK LTD 91127QC80 100,000,000 0.14% 8-Mar-22 8-Mar-22 0.15% 99,921,250 P-1 A-1+ Singapore ANZ NEW ZEALAND INTL LTD (UK BRANCH) 0018A3DS0 100,000,000 0.14% 26-Apr-22 26-Apr-22 0.25% 99,834,722 P-1 A-1+ Australia 5 of 5

UNAUDITED Schedule of Investments By Security Type BlackRock Cash Funds: Institutional Money Market Master Portfolio 31-Aug-21 Maturity or Final Yield or Amortized Cost Moody's S&P Position Description Identifier Par ($) Par (%) Geography Reset Maturity Coupon ($) Rating Rating

BARCLAYS BANK PLC (NY BRANCH) 06743LW16 95,072,000 0.14% 1-Sep-21 1-Sep-21 0.11% 95,071,419 P-1 A-1 United Kingdom WESTPAC BANKING CORP 9612C4Q79 92,000,000 0.13% 15-Sep-21 10-Mar-22 0.16% 92,000,000 P-1 A-1+ Australia SWEDBANK AB 87019RXV3 91,550,000 0.13% 29-Oct-21 29-Oct-21 0.13% 91,531,245 P-1 A-1 Sweden BANK OF MONTREAL 06367JX15 90,000,000 0.13% 1-Oct-21 1-Oct-21 0.10% 89,992,250 P-1 A-1 Canada UBS AG (UK BRANCH) 90351XCB7 90,000,000 0.13% 11-Mar-22 11-Mar-22 0.30% 89,856,000 P-1 A-1 Switzerland TORONTO-DOMINION BANK/THE 89119AZ76 85,000,000 0.12% 7-Dec-21 7-Dec-21 0.11% 84,974,548 P-1 A-1+ Canada GOLDMAN SACHS INTERNATIONAL 38150UAE1 84,000,000 0.12% 14-Jan-22 14-Jan-22 0.33% 83,895,280 P-1 A-1 United States WESTPAC SECURITIES NZ LTD 96122JFJ3 80,000,000 0.11% 1-Sep-21 1-Sep-21 0.14% 80,000,000 P-1 A-1+ Australia GOLDMAN SACHS INTERNATIONAL 38150UAC5 55,836,000 0.08% 12-Jan-22 12-Jan-22 0.23% 55,788,198 P-1 A-1 United States CITIGROUP GLOBAL MARKETS INC 17327BF67 42,400,000 0.06% 6-Jun-22 6-Jun-22 0.19% 42,337,566 P-1 A-1 United States ANZ NEW ZEALAND INTL LTD (UK BRANCH) 0018A3E34 36,000,000 0.05% 3-May-22 3-May-22 0.25% 35,938,750 P-1 A-1+ Australia

Non-Financial Company Commercial Paper 359,000,000 0.51% 358,974,066 DANAHER CORPORATION 23585LWG9 97,000,000 0.14% 16-Sep-21 16-Sep-21 0.16% 96,993,102 P-2 A-2 United States DBS GROUP HOLDINGS LTD 24024WWL1 75,000,000 0.11% 20-Sep-21 20-Sep-21 0.20% 74,991,667 P-1 NR Singapore DANAHER CORPORATION 23585LWP9 70,000,000 0.10% 23-Sep-21 23-Sep-21 0.16% 69,992,845 P-2 A-2 United States ROCKWELL AUTOMATION INC 7743E2WT1 48,000,000 0.07% 27-Sep-21 27-Sep-21 0.09% 47,996,760 P-2 A-1 United States KEURIG DR PEPPER INC 49271JW29 35,000,000 0.05% 2-Sep-21 2-Sep-21 0.10% 34,999,805 P-2 A-2 United States KOCH INDUSTRIES INC 50000DW10 34,000,000 0.05% 1-Sep-21 1-Sep-21 0.06% 33,999,887 P-1 A-1+ United States

Other Instrument - Note 926,681,000 1.32% 926,681,000 TOYOTA MOTOR CREDIT CORP MTN 89236THR9 352,800,000 0.50% 1-Sep-21 13-Dec-21 0.28% 352,800,000 A1 A+ Japan TOYOTA MOTOR CREDIT CORP MTN 89236TJC0 234,000,000 0.33% 1-Sep-21 28-Mar-22 0.27% 234,000,000 A1 A+ Japan TOYOTA MOTOR CREDIT CORP MTN 89236TJL0 339,881,000 0.48% 1-Sep-21 15-Aug-22 0.05% 339,881,000 A1 A+ Japan

TOTAL 70,411,961,775 100.00% 70,403,220,954 P = Put Holdings shown are unaudited and are based on the Fund’s unofficial books and records, and may not be representative of current or future investments. Fund holdings should not be relied on in making investment decisions and should not be construed as research or investment advice regarding particular securities.

PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS.

WAM, Dollar-Weighted Average Maturity: The average maturity of a Fund is the average amount of time until the organizations that issued the debt securities in the Fund’s portfolio must pay off the principal amount of the debt. “Dollar-weighted” means the larger the dollar value of a debt security in the Fund, the more weight it gets in calculating this average. To calculate the dollar-weighted average maturity, the Fund may treat a variable or floating rate security as having a maturity equal to the time remaining to the security’s next interest rate reset data rather than the security’s actual maturity.

WAL, Dollar-Weighted Average Life: The dollar-weighted average maturity of a Fund’s portfolio calculated without reference to the exceptions used for variable or floating rate securities regarding the use of the interest rate reset dates in lieu of the security’s actual maturity data. “Dollar-weighted” means the larger of the dollar value of a debt security in the Fund, the more weight it gets in calculating this average.

The “Geography” data point within this SOI represents BlackRock’s view of each security’s Geography risk.

The Fund’s current prospectus contains more complete information about the Fund, including its fees and expenses. For a current prospectus of the Fund which contains more complete information, please call 1-800-441-7450 or visit www..com/cash. Before investing, consider the investment objectives, risks, charges and expenses of the Fund. This and other information can be found in the Fund’s prospectus and if available the summary prospectus. Read the prospectus carefully before you invest or send money.

You could lose money by investing in the Fund. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.

The schedule of investments (SOI) represents certain information regarding the traded positions held within the portfolio as of the specified date. It does not include cash, accrued income and/or payables/receivables. The total assets reflected on the SOI will not match to the of the Fund as these items are excluded.

All portfolio information provided is as of month-end, unless otherwise noted, and is subject to change. Ratings by S&P and Moody’s apply to the credit quality of a portfolio and are not a recommendation to buy, sell or hold securities of a Fund, are subject to change, and do not remove market risks associated with investments in the Fund. For complete information on the methodology used by each rating agency, please visit the following websites.

S&P - http://www.standardandpoors.com Moody’s - https://www.moodys.com

Prepared by BlackRock Investments, LLC, member FINRA.© 2021 BlackRock, Inc. All Rights Reserved.