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

Shares Value COMMON STOCKS† - 99.4% Telecommunications - 66.7% Verizon Communications, Inc. 5,099 $ 296,507 Cisco Systems, Inc. 5,532 286,060 AT&T, Inc. 9,169 277,546 T-Mobile US, Inc.* 1,876 235,044 Motorola Solutions, Inc. 689 129,566 Arista Networks, Inc.* 370 111,699 Ubiquiti, Inc. 308 91,876 Lumen Technologies, Inc. 6,328 84,479 Ciena Corp.* 1,195 65,390 Juniper Networks, Inc. 2,576 65,250 Iridium Communications, Inc.* 1,332 54,945 America Movil SAB de CV — Class L ADR 3,610 49,024 BCE, Inc. 1,083 48,887 Vodafone Group plc ADR 2,610 48,102 TELUS Corp. 2,232 44,484 Rogers Communications, Inc. — Class B 939 43,288 Viavi Solutions, Inc.* 2,671 41,935 Viasat, Inc.* 812 39,033 CommScope Holding Company, Inc.* 2,524 38,769 Vonage Holdings Corp.* 3,269 38,640 Telephone & Data Systems, Inc. 1,603 36,805 Shenandoah Telecommunications Co. 718 35,045 InterDigital, Inc. 492 31,217 Infinera Corp.* 3,215 30,960 Calix, Inc.* 824 28,560 Plantronics, Inc.* 714 27,782 NETGEAR, Inc.* 603 24,783 Inseego Corp.*,1 2,253 22,530 Cincinnati Bell, Inc.* 1,299 19,940 Total Telecommunications 2,348,146 Media - 25.2% Comcast Corp. — Class A 4,309 233,160 Charter Communications, Inc. — Class A* 298 183,872 Liberty Broadband Corp. — Class C* 804 120,720 DISH Network Corp. — Class A* 2,669 96,618 Altice USA, Inc. — Class A* 2,671 86,888 Cable One, Inc. 41 74,963 Liberty Global plc — Class C* 2,143 54,732 Liberty Latin America Ltd. — Class C* 2,893 37,551 Total Media 888,504 Internet - 3.6% F5 Networks, Inc.* 396 82,613 Cogent Communications Holdings, Inc. 618 42,494 Total Internet 125,107 Computers - 2.7% Lumentum Holdings, Inc.* 674 61,570 NetScout Systems, Inc.* 1,123 31,624 Total Computers 93,194 Software - 1.2% Bandwidth, Inc. — Class A* 325 41,190 Total Common Stocks (Cost $2,519,802) 3,496,141

Face Amount REPURCHASE AGREEMENTS††,2 - 0.6% J.P. Morgan Securities LLC issued 03/31/21 at 0.01% due 04/01/21 $ 12,182 12,182 Barclays Capital, Inc. issued 03/31/21 at 0.01% due 04/01/21 5,539 5,539 BofA Securities, Inc. issued 03/31/21 at 0.01% due 04/01/21 5,055 5,055 Total Repurchase Agreements (Cost $22,776) 22,776

Shares SECURITIES LENDING COLLATERAL†,3 - 0.3% Money Market Fund First American Government Obligations Fund — Class Z, 0.03%4 9,470 9,470 Total Securities Lending Collateral (Cost $9,470) 9,470 Total Investments - 100.3% (Cost $2,552,048) $ 3,528,387 Other Assets & Liabilities, net - (0.3)% (8,806) Total Net Assets - 100.0% $ 3,519,581

* 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