SCHEDULE OF INVESTMENTS (Unaudited) June 30, 2021 HEALTH CARE FUND SHARES VALUE SHARES VALUE COMMON STOCKS† - 99.7% Jazz Pharmaceuticals plc* 701 $ 124,526 GlaxoSmithKline plc ADR 2,917 116,155 HEALTHCARE-PRODUCTS - 30.2% Novartis AG ADR 1,250 114,050 Abbott Laboratories 3,480 $ 403,436 Viatris, Inc. 7,920 113,177 Thermo Fisher Scientific, Inc. 784 395,504 Cardinal Health, Inc. 1,962 112,011 Danaher Corp. 1,454 390,195 Elanco Animal Health, Inc.* 3,174 110,106 Medtronic plc 2,655 329,565 Perrigo Company plc 2,294 105,180 Intuitive Surgical, Inc.* 319 293,365 Teva Pharmaceutical Industries Ltd. ADR* 10,447 103,425 Stryker Corp. 1,051 272,976 PRA Health Sciences, Inc.* 540 89,213 Edwards Lifesciences Corp.* 2,164 224,125 Bausch Health Companies, Inc.* 3,026 88,722 Boston Scientific Corp.* 4,995 213,586 Neurocrine Biosciences, Inc.* 855 83,209 IDEXX Laboratories, Inc.* 328 207,148 Organon & Co.* 2,475 74,893 Align Technology, Inc.* 313 191,243 Sarepta Therapeutics, Inc.* 871 67,712 Baxter International, Inc. 2,171 174,766 ResMed, Inc. 679 167,387 Total Pharmaceuticals 5,624,909 Zimmer Biomet Holdings, Inc. 994 159,855 BIOTECHNOLOGY - 20.5% West Pharmaceutical Services, Inc. 399 143,281 Amgen, Inc. 1,348 328,575 10X Genomics, Inc. — Class A* 649 127,087 Moderna, Inc.* 1,229 288,790 STERIS plc 616 127,081 Gilead Sciences, Inc. 3,768 259,464 Avantor, Inc.* 3,564 126,558 Illumina, Inc.* 493 233,293 Novocure Ltd.* 549 121,779 Regeneron Pharmaceuticals, Inc.* 389 217,272 Hologic, Inc.* 1,761 117,494 Vertex Pharmaceuticals, Inc.* 1,023 206,268 PerkinElmer, Inc. 755 116,580 Biogen, Inc.* 547 189,410 Bio-Techne Corp. 258 116,167 Alexion Pharmaceuticals, Inc.* 966 177,464 Insulet Corp.* 421 115,569 CRISPR Therapeutics AG* 1,057 171,118 QIAGEN N.V.* 2,151 104,065 Seagen, Inc.* 949 149,828 ABIOMED, Inc.* 332 103,621 Royalty Pharma plc — Class A 3,236 132,644 Masimo Corp.* 426 103,284 BioNTech SE ADR* 573 128,283 Dentsply Sirona, Inc. 1,598 101,090 Horizon Therapeutics plc* 1,363 127,631 Repligen Corp.* 458 91,426 Exact Sciences Corp.* 1,014 126,050 Natera, Inc.* 805 91,392 Alnylam Pharmaceuticals, Inc.* 721 122,224 Henry Schein, Inc.* 1,181 87,618 Incyte Corp.* 1,418 119,296 Penumbra, Inc.* 319 87,425 Novavax, Inc.* 560 118,894 Hill-Rom Holdings, Inc. 669 75,992 BioMarin Pharmaceutical, Inc.* 1,294 107,971 Tandem Diabetes Care, Inc.* 714 69,544 Guardant Health, Inc.* 788 97,862 Quidel Corp.* 536 68,672 Arrowhead Pharmaceuticals, Inc.* 960 79,507 Nevro Corp.* 406 67,311 Pacific Biosciences of California, Inc.* 2,260 79,032 Haemonetics Corp.* 788 52,512 Mirati Therapeutics, Inc.* 484 78,181 iRhythm Technologies, Inc.* 591 39,213 United Therapeutics Corp.* 432 77,505 Total Healthcare-Products 5,677,912 Twist Bioscience Corp.* 573 76,352 Exelixis, Inc.* 3,284 59,834 PHARMACEUTICALS - 29.9% Emergent BioSolutions, Inc.* 805 50,707 Johnson & Johnson 3,482 573,625 Inovio Pharmaceuticals, Inc.*,1 4,250 39,398 Eli Lilly & Co. 1,812 415,890 Pfizer, Inc. 10,388 406,794 Total Biotechnology 3,842,853 Merck & Company, Inc. 4,995 388,461 HEALTHCARE-SERVICES - 14.9% AbbVie, Inc. 3,421 385,341 UnitedHealth Group, Inc. 1,344 538,191 Bristol-Myers Squibb Co. 5,045 337,107 Anthem, Inc. 703 268,406 CVS Health Corp. 3,449 287,785 HCA Healthcare, Inc. 1,112 229,895 Zoetis, Inc. 1,392 259,413 Humana, Inc. 478 211,620 Cigna Corp. 1,051 249,161 IQVIA Holdings, Inc.* 769 186,344 Becton Dickinson and Co. 960 233,462 Centene Corp.* 2,444 178,241 1 AstraZeneca plc ADR 3,150 188,685 Laboratory Corporation of DexCom, Inc.* 423 180,621 America Holdings* 534 147,304 McKesson Corp. 788 150,697 Teladoc Health, Inc.* 870 144,672 Intellia Therapeutics, Inc.* 823 133,252 Charles River Laboratories AmerisourceBergen Corp. — Class A 1,155 132,236 International, Inc.* 326 120,594 SCHEDULE OF INVESTMENTS (Unaudited)(concluded) June 30, 2021 HEALTH CARE FUND FACE SHARES VALUE AMOUNT VALUE Catalent, Inc.* 1,083 $ 117,094 REPURCHASE AGREEMENTS††,2 - 0.5% Quest Diagnostics, Inc. 881 116,266 J.P. Morgan Securities LLC Molina Healthcare, Inc.* 421 106,538 issued 06/30/21 at 0.05% DaVita, Inc.* 808 97,308 due 07/01/21 $ 52,644 $ 52,644 Universal Health Services, Inc. — Class B 653 95,619 Barclays Capital, Inc. Syneos Health, Inc.* 962 86,089 issued 06/30/21 at 0.03% Encompass Health Corp. 970 75,689 due 07/01/21 20,726 20,726 Invitae Corp.*,1 2,169 73,160 BofA Securities, Inc. Total Healthcare-Services 2,793,030 issued 06/30/21 at 0.04% due 07/01/21 20,320 20,320 ELECTRONICS - 2.5% Total Repurchase Agreements Agilent Technologies, Inc. 1,253 185,206 (Cost $93,690) 93,690 Mettler-Toledo International, Inc.* 113 156,543 Waters Corp.* 369 127,530 SHARES Total Electronics 469,279 SOFTWARE - 1.7% SECURITIES LENDING COLLATERAL†,3 - 1.2% Veeva Systems, Inc. — Class A* 617 191,856 Money Market Fund Cerner Corp. 1,704 133,185 First American Government 4 Total Software 325,041 Obligations Fund — Class Z, 0.02% 219,125 219,125 Total Securities Lending Collateral Total Common Stocks (Cost $219,125) 219,125 (Cost $6,783,142) 18,733,024 Total Investments - 101.4% (Cost $7,095,957) $ 19,045,839 Other Assets & Liabilities, net - (1.4)% (264,254) Total Net Assets - 100.0% $ 18,781,585 * Non-income producing security. † Value determined based on Level 1 inputs. †† Value determined based on Level 2 inputs. 1 All or a portion of this security is on loan at June 30, 2021. 2 Repurchase Agreements. 3 Securities lending collateral. 4 Rate indicated is the 7-day yield as of June 30, 2021. ADR — American Depositary Receipt plc — Public Limited Company.