SCHEDULE OF INVESTMENTS December 31, 2016

HEALTH CARE FUND

SHARES VALUE

COMMON STOCKS† - 100.2%

PHARMACEUTICALS - 36.5% Johnson & Johnson 5,175 $ 596,213 , Inc. 14,396 467,582 Merck & Company, Inc. 7,184 422,922 AbbVie, Inc. 5,579 349,357 Bristol-Myers Squibb Co. 5,776 337,549 Eli Lilly & Co. 4,369 321,340 plc* 1,525 320,265 Shire plc ADR 1,449 246,881 Express Scripts Holding Co.* 3,219 221,435 McKesson Corp. 1,352 189,888 Zoetis, Inc. 3,436 183,929 Teva Pharmaceutical Industries Ltd. ADR 4,826 174,942 Cardinal Health, Inc. 2,254 162,220 plc* 1,481 161,473 Endo International plc* 9,613 158,326 N.V.* 4,034 153,897 plc* 2,762 153,512 AstraZeneca plc ADR 5,538 151,298 Company plc 1,770 147,317 Novartis AG ADR 2,003 145,899 Novo Nordisk A/S ADR 3,989 143,046 AmerisourceBergen Corp. — Class A 1,829 143,010 GlaxoSmithKline plc ADR 3,705 142,680 TESARO, Inc.* 720 96,826 VCA, Inc.* 1,210 83,067 Valeant Pharmaceuticals International, Inc.* 5,464 79,337 DexCom, Inc.* 1,245 74,326 plc* 1,488 74,132 ACADIA Pharmaceuticals, Inc.*,1 2,518 72,619 PRA Health Sciences, Inc.* 1,140 62,837 Neurocrine Biosciences, Inc.* 1,520 58,824 Horizon Pharma plc* 3,602 58,280 Prestige Brands Holdings, Inc.* 1,110 57,831 Akorn, Inc.* 2,575 56,212 Clovis Oncology, Inc.*,1 1,160 51,527 Owens & Minor, Inc. 1,439 50,782 Ironwood Pharmaceuticals, Inc. — Class A* 3,310 50,610 Nektar Therapeutics* 3,950 48,467 Radius Health, Inc.* 1,180 44,875 Array BioPharma, Inc.* 4,880 42,895 , Inc.* 1,560 42,791 Eagle Pharmaceuticals, Inc.* 510 40,463 Pacira Pharmaceuticals, Inc.* 1,234 39,858 Agios Pharmaceuticals, Inc.* 926 38,642 Ophthotech Corp.* 7,760 37,481 Depomed, Inc.* 2,063 37,175 Impax Laboratories, Inc.* 2,559 33,907 Amicus Therapeutics, Inc.* 5,540 27,534 Total Pharmaceuticals 6,856,279

HEALTHCARE-PRODUCTS - 23.4% 6,625 254,466 Thermo Fisher Scientific, Inc. 1,794 253,133 Danaher Corp. 3,240 252,202 Stryker Corp. 1,944 232,911 Medtronic plc 3,085 219,744 Becton Dickinson and Co. 1,215 201,143 Corp.* 8,570 185,368 Intuitive Surgical, Inc.* 269 170,591 , Inc. 3,777 167,472 St. Jude Medical, Inc. 2,067 165,753 Edwards Lifesciences Corp.* 1,668 156,292 Zimmer Biomet Holdings, Inc. 1,510 155,832 CR Bard, Inc. 623 139,963 DENTSPLY SIRONA, Inc. 2,144 123,773 Henry Schein, Inc.* 782 118,637 Hologic, Inc.* 2,807 112,617 IDEXX Laboratories, Inc.* 940 110,234 ResMed, Inc. 1,638 101,638 Varian Medical Systems, Inc.* 1,101 98,848 Cooper Companies, Inc. 565 98,835 Align Technology, Inc.* 989 95,073 Teleflex, Inc. 577 92,984 West Pharmaceutical Services, Inc. 1,013 85,933 ABIOMED, Inc.* 660 74,369 Patterson Companies, Inc.1 1,700 69,751 Bio-Techne Corp. 660 67,868 Hill-Rom Holdings, Inc. 1,190 66,807 OPKO Health, Inc.*,1 7,183 66,802 NuVasive, Inc.* 952 64,127 Bruker Corp. 3,004 63,625 Masimo Corp.* 940 63,356 Integra LifeSciences Holdings Corp.* 720 61,769 ICU Medical, Inc.* 370 54,520 Insulet Corp.* 1,360 51,245 Nevro Corp.* 670 48,682 Zeltiq Aesthetics, Inc.* 1,070 46,566 Total Healthcare-Products 4,392,929

BIOTECHNOLOGY - 19.2% , Inc. 2,396 350,318 Celgene Corp.* 2,821 326,530 , Inc. 4,480 320,813 , Inc.* 949 269,117 Regeneron Pharmaceuticals, Inc.* 559 205,203 , Inc.* 1,667 203,957 Incyte Corp.* 1,497 150,104 Illumina, Inc.* 1,169 149,679 , Inc.* 1,959 144,320 BioMarin Pharmaceutical, Inc.* 1,580 130,887 Seattle Genetics, Inc.* 1,700 89,709 , Inc.* 1,770 84,659 United Therapeutics Corp.* 590 84,624 Bio-Rad Laboratories, Inc. — Class A* 440 80,203 Exelixis, Inc.* 4,680 69,779 Charles River Laboratories International, Inc.* 850 64,762 SCHEDULE OF INVESTMENTS (concluded) December 31, 2016

HEALTH CARE FUND

SHARES VALUE

Ultragenyx Pharmaceutical, Inc.* 850 $ 59,764 Intercept Pharmaceuticals, Inc.*,1 512 55,629 , Inc.* 1,477 55,299 Intrexon Corp.*,1 2,270 55,161 ARIAD Pharmaceuticals, Inc.* 4,363 54,276 Bluebird Bio, Inc.* 850 52,445 Juno Therapeutics, Inc.*,1 2,728 51,423 Medicines Co.* 1,446 49,077 Sage Therapeutics, Inc.* 960 49,018 Kite Pharma, Inc.*,1 1,092 48,965 Ligand Pharmaceuticals, Inc. — Class B* 470 47,757 Spark Therapeutics, Inc.* 880 43,912 Five Prime Therapeutics, Inc.* 840 42,092 Exact Sciences Corp.*,1 3,142 41,977 Halozyme Therapeutics, Inc.* 3,860 38,137 AMAG Pharmaceuticals, Inc.*,1 1,060 36,888 , Inc.* 2,078 34,640 Alder Biopharmaceuticals, Inc.* 1,630 33,904 , Inc.* 1,622 30,494 Total Biotechnology 3,605,522

HEALTHCARE-SERVICES - 15.4% UnitedHealth Group, Inc. 2,666 426,667 Aetna, Inc. 1,840 228,178 Anthem, Inc. 1,489 214,074 Cigna Corp. 1,528 203,820 Humana, Inc. 947 193,216 HCA Holdings, Inc.* 2,485 183,939 Quintiles IMS Holdings, Inc.* 1,920 146,016 Laboratory Corporation of America Holdings* 968 124,271 DaVita, Inc.* 1,914 122,879 Quest Diagnostics, Inc. 1,334 122,595 Universal Health Services, Inc. — Class B 1,096 116,592 Centene Corp.* 1,898 107,256 Envision Healthcare Corp.* 1,472 93,163 MEDNAX, Inc.* 1,320 87,991 WellCare Health Plans, Inc.* 630 86,360 HealthSouth Corp. 1,620 66,809 Acadia Healthcare Company, Inc.* 1,916 63,420 Molina Healthcare, Inc.* 1,110 60,229 Brookdale Senior Living, Inc. — Class A* 4,470 55,517 LifePoint Health, Inc.* 915 51,972 Magellan Health, Inc.* 600 45,150 Tenet Healthcare Corp.* 2,884 42,799 Air Methods Corp.* 1,170 37,265 Total Healthcare-Services 2,880,178

ELECTRONICS - 2.3% Agilent Technologies, Inc. 2,892 131,760 Mettler-Toledo International, Inc.*,1 274 114,685 Waters Corp.* 823 110,603 PerkinElmer, Inc. 1,560 81,354 Total Electronics 438,402

SOFTWARE - 2.1% Cerner Corp.* 2,874 136,141 Veeva Systems, Inc. — Class A* 2,028 82,540 athenahealth, Inc.* 700 73,619 Medidata Solutions, Inc.* 1,195 59,356 Allscripts Healthcare Solutions, Inc.* 4,628 47,252 Total Software 398,908

COMMERCIAL SERVICES - 1.3% PAREXEL International Corp.* 983 64,603 Team Health Holdings, Inc.* 1,440 62,568 Incorporated Research Holdings, Inc. — Class A* 1,095 57,597 HealthEquity, Inc.* 1,300 52,676 Total Commercial Services 237,444

Total Common Stocks (Cost $10,555,058) 18,809,662

RIGHTS††† - 0.0% Dyax Corp. Expires 01/25/17* 3,790 — Total Rights (Cost $—) —

FACE AMOUNT

REPURCHASE AGREEMENT††,2 - 0.8% Royal Bank of Canada issued 12/30/16 at 0.24% due 01/03/17 $ 154,351 154,351 Total Repurchase Agreement (Cost $154,351) 154,351

SHARES

SECURITIES LENDING COLLATERAL†,3 - 2.7% First American Government Obligations Fund - Class Z, 0.42%4 509,916 509,916 Total Securities Lending Collateral (Cost $509,916) 509,916

Total Investments - 103.7% (Cost $11,219,325) $ 19,473,929 Other Assets & Liabilities, net - (3.7)% (695,996) Total Net Assets - 100.0% $ 18,777,933

* Non-income producing security. † Value determined based on Level 1 inputs. †† Value determined based on Level 2 inputs. ††† Value determined based on Level 3 inputs. 1 All or portion of this security is on loan at December 31, 2016. 2 Repurchase Agreement. 3 Securities lending collateral. 4 Rate indicated is the 7 day yield as of December 31, 2016. ADR — American Depositary Receipt plc — Public Limited Company