Financial Services Fund SCHEDULE OF INVESTMENTS (Unaudited) March 31, 2021

Shares Value COMMON STOCKS† - 99.5% REITS - 29.0% American Tower Corp. — Class A 845 $ 202,006 Prologis, Inc. 1,629 172,674 Crown Castle International Corp. 966 166,278 Equinix, Inc. 216 146,791 Digital Realty Trust, Inc. 892 125,629 Public Storage 509 125,601 Simon Property Group, Inc. 1,005 114,339 SBA Communications Corp. 385 106,857 Welltower, Inc. 1,457 104,365 Weyerhaeuser Co. 2,818 100,321 Equity Residential 1,346 96,414 AvalonBay Communities, Inc. 522 96,314 Realty Income Corp. 1,454 92,329 Alexandria Real Estate Equities, Inc. 547 89,872 Ventas, Inc. 1,586 84,597 Invitation Homes, Inc. 2,584 82,662 VICI Properties, Inc. 2,880 81,331 Extra Space Storage, Inc. 600 79,530 Healthpeak Properties, Inc. 2,478 78,652 Sun Communities, Inc. 522 78,321 Essex Property Trust, Inc. 287 78,018 Duke Realty Corp. 1,818 76,229 Boston Properties, Inc. 733 74,224 WP Carey, Inc. 957 67,717 UDR, Inc. 1,538 67,457 Medical Properties Trust, Inc. 3,152 67,074 Equity LifeStyle Properties, Inc. 1,010 64,276 Host Hotels & Resorts, Inc.* 3,792 63,895 American Homes 4 Rent — Class A 1,897 63,246 Camden Property Trust 564 61,989 Americold Realty Trust 1,568 60,321 Gaming and Leisure Properties, Inc. 1,398 59,317 Regency Centers Corp. 1,043 59,148 Lamar Advertising Co. — Class A 618 58,043 AGNC Investment Corp. 3,438 57,621 STORE Capital Corp. 1,712 57,352 VEREIT, Inc. 1,450 55,999 Omega Healthcare Investors, Inc. 1,519 55,641 CyrusOne, Inc. 816 55,259 Vornado Realty Trust 1,197 54,332 National Retail Properties, Inc. 1,201 52,928 CubeSmart 1,395 52,773 Federal Realty Investment Trust 520 52,754 Kilroy Realty Corp. 790 51,848 Rexford Industrial Realty, Inc. 978 49,291 Life Storage, Inc. 555 47,702 CoreSite Realty Corp. 390 46,741 American Campus Communities, Inc. 1,080 46,624 Brixmor Property Group, Inc. 2,288 46,286 First Industrial Realty Trust, Inc. 1,010 46,248 Healthcare Trust of America, Inc. — Class A 1,665 45,921 EastGroup Properties, Inc. 310 44,417 Douglas Emmett, Inc. 1,373 43,112 SL Green Realty Corp. 584 40,874 Agree Realty Corp. 580 39,040 Healthcare Realty Trust, Inc. 1,280 38,810 QTS Realty Trust, Inc. — Class A 620 38,465 Hudson Pacific Properties, Inc. 1,406 38,145 Total REITS 4,304,020 Banks - 24.4% JPMorgan Chase & Co. 2,660 404,932 Bank of America Corp. 9,009 348,558 Wells Fargo & Co. 6,086 237,780 Citigroup, Inc. 3,216 233,964 Morgan Stanley 2,862 222,263 Goldman Sachs Group, Inc. 611 199,797 U.S. Bancorp 3,127 172,954 Truist Financial Corp. 2,882 168,078 PNC Financial Services Group, Inc. 918 161,027 Bank of New York Mellon Corp. 2,625 124,136 State Street Corp. 1,233 103,584 First Republic Bank 613 102,218 Fifth Third Bancorp 2,587 96,883 SVB Financial Group* 182 89,846 Northern Trust Corp. 846 88,923 Regions Financial Corp. 4,051 83,694 M&T Bank Corp. 548 83,082 KeyCorp 4,143 82,777 Citizens Financial Group, Inc. 1,849 81,633 ICICI Bank Ltd. ADR* 4,750 76,143 Huntington Bancshares, Inc. 4,781 75,157 HDFC Bank Ltd. ADR* 936 72,718 Signature Bank 298 67,378 Toronto-Dominion Bank 1,012 65,993 HSBC Holdings plc ADR 2,161 62,972 First Horizon Corp. 3,399 57,477 Zions Bancorp North America 1,027 56,444 Total Banks 3,620,411 Insurance - 22.9% Berkshire Hathaway, Inc. — Class B* 1,833 468,277 Marsh & McLennan Companies, Inc. 1,252 152,494 Willis Towers Watson plc 639 146,254 Progressive Corp. 1,525 145,805 MetLife, Inc. 2,289 139,148 Aon plc — Class A 601 138,296 Chubb Ltd. 856 135,222 American International Group, Inc. 2,572 118,852 Travelers Companies, Inc. 765 115,056 Prudential Financial, Inc. 1,243 113,237 Aflac, Inc. 2,201 112,647 Allstate Corp. 967 111,108 Arthur J Gallagher & Co. 747 93,203 Hartford Financial Services Group, Inc. 1,373 91,703 Arch Capital Group Ltd.* 2,090 80,193 Principal Financial Group, Inc. 1,268 76,029 Cincinnati Financial Corp. 733 75,565 Everest Re Group Ltd. 298 73,848 Equitable Holdings, Inc. 2,210 72,090 Athene Holding Ltd. — Class A* 1,399 70,510

Financial Services Fund SCHEDULE OF INVESTMENTS (Unaudited) March 31, 2021

Shares Value COMMON STOCKS† - 99.5% (continued) Insurance - 22.9% (continued) Loews Corp. 1,343 $ 68,869 Brown & Brown, Inc. 1,503 68,702 Markel Corp.* 60 68,377 RenaissanceRe Holdings Ltd. 420 67,305 Fidelity National Financial, Inc. 1,617 65,747 Lincoln National Corp. 1,033 64,325 Globe Life, Inc. 650 62,810 American Financial Group, Inc. 519 59,218 Reinsurance Group of America, Inc. — Class A 440 55,462 Assurant, Inc. 381 54,014 Voya Financial, Inc. 832 52,949 First American Financial Corp. 860 48,719 Unum Group 1,625 45,224 Lemonade, Inc.*,1 480 44,703 MGIC Investment Corp. 3,075 42,589 Total Insurance 3,398,550 Diversified Financial Services - 15.5% Charles Schwab Corp. 3,236 210,923 BlackRock, Inc. — Class A 270 203,569 American Express Co. 1,422 201,128 CME Group, Inc. — Class A 795 162,363 Intercontinental Exchange, Inc. 1,357 151,550 Capital One Financial Corp. 1,147 145,933 Rocket Companies, Inc. — Class A1 5,610 129,535 T. Rowe Price Group, Inc. 692 118,747 Discover Financial Services 1,071 101,734 Nasdaq, Inc. 640 94,374 Synchrony Financial 2,274 92,461 Ameriprise Financial, Inc. 385 89,493 Apollo Global Management, Inc. 1,838 86,404 Tradeweb Markets, Inc. — Class A 1,070 79,180 Ally Financial, Inc. 1,735 78,439 Franklin Resources, Inc. 2,498 73,941 Invesco Ltd. 2,579 65,042 LPL Financial Holdings, Inc. 445 63,261 Cboe Global Markets, Inc. 611 60,300 SLM Corp. 2,803 50,370 Credit Acceptance Corp.*,1 129 46,470 Total Diversified Financial Services 2,305,217 Commercial Services - 2.8% S&P Global, Inc. 505 178,199 Moody's Corp. 491 146,618 MarketAxess Holdings, Inc. 163 81,161 Total Commercial Services 405,978 Private Equity - 2.5% Blackstone Group, Inc. — Class A 2,451 182,673 KKR & Company, Inc. — Class A 2,574 125,740 Brookfield Asset Management, Inc. — Class A 1,573 69,998 Total Private Equity 378,411 Biotechnology - 0.9% Illumina, Inc.* 360 138,261 Software - 0.8% MSCI, Inc. — Class A 266 111,529 Media - 0.4% FactSet Research Systems, Inc. 202 62,335 Savings & Loans - 0.3% People's United Financial, Inc. 2,940 52,626 Total Common Stocks (Cost $9,657,483) 14,777,338

Face Amount REPURCHASE AGREEMENTS††,2 - 0.6% J.P. Morgan Securities LLC issued 03/31/21 at 0.01% due 04/01/21 $ 49,305 49,305 Barclays Capital, Inc. issued 03/31/21 at 0.01% due 04/01/21 22,417 22,417 BofA Securities, Inc. issued 03/31/21 at 0.01% due 04/01/21 20,459 20,459 Total Repurchase Agreements (Cost $92,181) 92,181

Shares SECURITIES LENDING COLLATERAL†,3 - 1.1% Money Market Fund First American Government Obligations Fund — Class Z, 0.03%4 164,633 164,633 Total Securities Lending Collateral (Cost $164,633) 164,633 Total Investments - 101.2% (Cost $9,914,297) $ 15,034,152 Other Assets & Liabilities, net - (1.2)% (173,501) Total Net Assets - 100.0% $ 14,860,651

* 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 March 31, 2021. 2 Repurchase Agreements. 3 Securities lending collateral. 4 Rate indicated is the 7-day yield as of March 31, 2021.

ADR — American Depositary Receipt CME — Chicago Mercantile Exchange plc — Public Limited Company REIT — Real Estate Investment Trust