Transportation Fund SCHEDULE OF INVESTMENTS (Unaudited) March 31, 2021

Shares Value COMMON STOCKS† - 99.5% Transportation - 41.3% , Inc. — Class B 2,470 $ 419,875 Union Pacific Corp. 1,874 413,048 FedEx Corp. 1,064 302,219 CSX Corp. 3,045 293,599 Norfolk Southern Corp. 1,035 277,918 Kansas City Southern 684 180,521 Old Dominion Freight Line, Inc. 741 178,144 of Washington, Inc. 1,360 146,458 J.B. Hunt Transport Services, Inc. 855 143,700 CH Robinson Worldwide, Inc. 1,256 119,860 XPO Logistics, Inc.* 951 117,258 ZTO Express Cayman, Inc. ADR 3,448 100,509 Knight- Holdings, Inc. 2,018 97,046 Canadian National Railway Co. 817 94,756 Canadian Pacific Railway Ltd.1 248 94,064 , Inc. 503 83,025 , Inc.* 356 82,087 System, Inc. 898 67,934 Kirby Corp.* 1,003 60,461 , Inc. 1,278 60,283 Worldwide Holdings, Inc.* 730 44,121 Total Transportation 3,376,886 Auto Manufacturers - 19.7% Tesla, Inc.* 1,070 714,685 Co.* 5,238 300,975 NIO, Inc. ADR* 5,570 217,119 Ferrari N.V. 477 99,827 N.V. 5,099 90,711 Nikola Corp.*,1 5,470 75,978 Fisker, Inc.* 3,950 68,019 , Inc.*,1 3,000 41,310 Total Auto Manufacturers 1,608,624 Auto Parts & Equipment - 14.2% QuantumScape Corp.*,1 2,690 120,378 plc* 825 113,768 BorgWarner, Inc. 2,369 109,827 Lear Corp. 601 108,931 Gentex Corp. 2,763 98,556 Magna International, Inc. 1,060 93,322 Autoliv, Inc.* 990 91,872 Luminar Technologies, Inc.* 3,720 90,433 Fox Factory Holding Corp.* 586 74,457 plc* 1,548 68,422 Goodyear Tire & Rubber Co.* 3,878 68,136 Dana, Inc. 2,529 61,531 Corp.* 480 58,536 Faurecia SE* 70 3,727 Total Auto Parts & Equipment 1,161,896 - 13.9% Co. 3,304 201,742 , Inc.* 3,824 184,623 , Inc.* 2,435 140,110 , Inc.* 5,407 129,227 Air Group, Inc.* 1,409 97,517 Ryanair Holdings plc ADR* 809 93,035 Copa Holdings S.A. — Class A* 1,067 86,203 JetBlue Airways Corp.* 4,146 84,330 Allegiant Travel Co. — Class A* 260 63,455 Spirit Airlines, Inc.* 1,683 62,103 Total Airlines 1,142,345 Internet - 5.9% Uber Technologies, Inc.* 6,126 333,928 Lyft, Inc. — Class A* 2,372 149,863 Total Internet 483,791 Home Builders - 2.4% Thor Industries, Inc. 663 89,333 LCI Industries 440 58,203 Winnebago Industries, Inc. 680 52,163 Total Home Builders 199,699 Leisure Time - 1.1% Harley-Davidson, Inc. 2,178 87,338 Commercial Services - 1.0% , Inc.* 1,086 78,779 Total Common Stocks (Cost $4,070,334) 8,139,358

Face Amount REPURCHASE AGREEMENTS††,2 - 0.5% J.P. Morgan Securities LLC issued 03/31/21 at 0.01% due 04/01/21 $ 22,588 22,588 Barclays Capital, Inc. issued 03/31/21 at 0.01% due 04/01/21 10,269 10,269 BofA Securities, Inc. issued 03/31/21 at 0.01% due 04/01/21 9,373 9,373 Total Repurchase Agreements (Cost $42,230) 42,230

Shares SECURITIES LENDING COLLATERAL†,3 - 2.7% Money Market Fund First American Government Obligations Fund — Class Z, 0.03%4 221,185 221,185 Total Securities Lending Collateral (Cost $221,185) 221,185 Total Investments - 102.7% (Cost $4,333,749) $ 8,402,773 Other Assets & Liabilities, net - (2.7)% (224,000) Total Net Assets - 100.0% $ 8,178,773

* 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 plc — Public Limited Company