SCHEDULE OF INVESTMENTS March 31, 2021 S&P MIDCAP 400® PURE VALUE FUND

Shares Value Shares Value

COMMON STOCKS† - 99.2% World Fuel Services Corp. 88,527 $ 3,116,150 AutoNation, Inc.* 29,620 2,761,177 FINANCIAL - 40.0% Taylor Morrison Home Corp. — Class A* 86,181 2,655,237 Reinsurance Group of Dana, Inc. 95,947 2,334,391 America, Inc. — Class A 20,712 $ 2,610,748 Foot Locker, Inc. 38,424 2,161,350 Navient Corp. 173,718 2,485,905 Tri Pointe Homes, Inc.* 103,142 2,099,971 Jefferies Financial Group, Inc. 74,861 2,253,316 KB Home 42,670 1,985,435 Genworth Financial, Inc. — Class A* 675,569 2,242,889 Univar Solutions, Inc.* 90,912 1,958,244 CNO Financial Group, Inc. 85,845 2,085,175 Dick’s Sporting Goods, Inc. 22,885 1,742,693 Old Republic International Corp. 89,997 1,965,534 Murphy USA, Inc. 11,620 1,679,787 Mercury General Corp. 31,762 1,931,447 Goodyear Tire & Rubber Co.* 80,237 1,409,764 Associated Banc-Corp. 86,404 1,843,861 Thor Industries, Inc. 10,021 1,350,229 FNB Corp. 139,868 1,776,324 BJ’s Wholesale Club Holdings, Inc.* 28,672 1,286,226 Sterling Bancorp 69,729 1,605,162 Lear Corp. 6,959 1,261,319 Valley National Bancorp 114,558 1,574,027 Adient plc* 21,387 945,305 First American Financial Corp. 27,650 1,566,373 , Inc.* 23,771 884,044 Fulton Financial Corp. 90,370 1,539,001 KAR Auction Services, Inc.* 34,215 513,225 Corp. 20,206 1,531,615 Jones Lang LaSalle, Inc.* 8,370 1,498,565 Total Consumer, Cyclical 33,284,444 New York Community Bancorp, Inc. 117,970 1,488,781 INDUSTRIAL - 15.0% First Horizon Corp. 82,776 1,399,742 Avnet, Inc. 82,339 3,417,892 Pinnacle Financial Partners, Inc. 15,366 1,362,349 SYNNEX Corp. 22,684 2,605,031 Trustmark Corp. 39,780 1,338,995 Arrow Electronics, Inc.* 21,772 2,412,773 Bank OZK 31,806 1,299,275 Ryder System, Inc. 26,165 1,979,382 SL Green Realty Corp. REIT 18,450 1,291,316 Jabil, Inc. 33,170 1,730,147 Washington Federal, Inc. 41,890 1,290,212 Greif, Inc. — Class A 24,572 1,400,604 Alleghany Corp.* 2,030 1,271,369 MasTec, Inc.* 14,460 1,354,902 Kemper Corp. 15,835 1,262,366 EMCOR Group, Inc. 11,300 1,267,408 United Bankshares, Inc. 31,330 1,208,711 MDU Resources Group, Inc. 34,450 1,088,964 Cathay General Bancorp 29,510 1,203,418 Oshkosh Corp. 9,130 1,083,366 Hancock Whitney Corp. 28,602 1,201,570 Dycom Industries, Inc.* 10,932 1,015,036 Hanover Group, Inc. 9,200 1,191,032 AECOM* 15,372 985,499 Alliance Data Systems Corp. 10,398 1,165,512 KBR, Inc. 20,060 770,104 Synovus Financial Corp. 25,210 1,153,357 Kirby Corp.* 11,520 694,426 MGIC Investment Corp. 83,180 1,152,043 Trinity Industries, Inc. 23,162 659,885 TCF Financial Corp. 24,531 1,139,710 Colfax Corp.* 14,750 646,197 International Bancshares Corp. 24,130 1,120,115 GATX Corp. 5,790 536,965 Macerich Co. REIT1 95,020 1,111,734 Total Industrial 23,648,581 American Financial Group, Inc. 9,690 1,105,629 BancorpSouth Bank 32,420 1,053,002 CONSUMER, NON-CYCLICAL - 8.8% Prosperity Bancshares, Inc. 12,280 919,649 Graham Holdings Co. — Class B 4,430 2,491,609 Webster Financial Corp. 16,190 892,231 Sprouts Farmers Market, Inc.* 78,144 2,080,193 East West Bancorp, Inc. 11,860 875,268 Pilgrim’s Pride Corp.* 84,650 2,013,823 Pebblebrook Hotel Trust REIT 34,196 830,621 ManpowerGroup, Inc. 18,230 1,802,947 Service Properties Trust REIT 68,570 813,240 TreeHouse Foods, Inc.* 32,978 1,722,771 UMB Financial Corp. 8,400 775,572 Adtalem Global Education, Inc.* 32,018 1,265,992 CIT Group, Inc. 14,510 747,410 Tenet Healthcare Corp.* 23,501 1,222,052 Texas Capital Bancshares, Inc.* 9,602 680,974 , Inc. 9,080 816,474 Selective Insurance Group, Inc. 8,810 639,077 Strategic Education, Inc. 5,530 508,262 Sabra Health Care REIT, Inc. 32,910 571,318 Total Consumer, Non-cyclical 13,924,123 Cousins Properties, Inc. REIT 16,050 567,367 Janus Henderson Group plc 16,610 517,401 BASIC MATERIALS - 6.5% Total Financial 63,150,308 Commercial Metals Co. 104,639 3,227,067 Domtar Corp. 79,796 2,948,462 CONSUMER, CYCLICAL - 21.1% Reliance Steel & Aluminum Co. 7,860 1,196,999 Kohl’s Corp. 52,674 3,139,897 Steel Corp. 41,009 1,073,205 SCHEDULE OF INVESTMENTS (concluded) March 31, 2021 S&P MIDCAP 400® PURE VALUE FUND

Face Shares Value Amount Value

Steel Dynamics, Inc. 21,060 $ 1,069,006 REPURCHASE AGREEMENTS††,2 - 0.6% Minerals Technologies, Inc. 10,244 771,578 J.P. Morgan Securities LLC Total Basic Materials 10,286,317 issued 03/31/21 at 0.01% due 04/01/21 $ 544,253 $ 544,253 COMMUNICATIONS - 3.2% Barclays Capital, Inc. Telephone & Data Systems, Inc. 153,686 3,528,630 issued 03/31/21 at 0.01% Viasat, Inc.* 32,800 1,576,696 due 04/01/21 247,444 247,444 Total Communications 5,105,326 BofA Securities, Inc. issued 03/31/21 at 0.01% TECHNOLOGY - 3.2% due 04/01/21 225,831 225,831 Xerox Holdings Corp. 114,310 2,774,304 NCR Corp.* 31,180 1,183,281 Total Repurchase Agreements NetScout Systems, Inc.* 37,556 1,057,577 (Cost $1,017,528) 1,017,528

Total Technology 5,015,162 Shares UTILITIES - 1.4% Southwest Gas Holdings, Inc. 12,870 884,298 SECURITIES LENDING COLLATERAL†,3 - 0.5% UGI Corp. 16,820 689,788 Money Market Fund ALLETE, Inc. 8,530 573,131 First American Government 4 Total Utilities 2,147,217 Obligations Fund — Class Z, 0.03% 744,237 744,237 Total Securities Lending Collateral Total Common Stocks (Cost $744,237) 744,237 (Cost $133,754,998) 156,561,478 Total Investments - 100.3% (Cost $135,516,763) $ 158,323,243 Other Assets & Liabilities, net - (0.3)% (497,039) Total Net Assets - 100.0% $ 157,826,204

* 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. plc — Public Limited Company REIT — Real Estate Investment Trust