Health Care Fund SCHEDULE OF INVESTMENTS (Unaudited) September 30, 2017

Shares Value COMMON STOCKS† - 99.8% Pharmaceuticals - 35.0% Johnson & Johnson 6,515 $ 847,014 , Inc. 18,337 654,631 Merck & Company, Inc. 9,253 592,470 AbbVie, Inc. 5,629 500,193 Bristol-Myers Squibb Co. 7,228 460,713 Eli Lilly & Co. 5,197 444,551 plc 1,785 365,836 Shire plc ADR 1,949 298,470 Express Scripts Holding Co.* 4,418 279,748 McKesson Corp. 1,712 262,980 Zoetis, Inc. 3,926 250,322 Teva Pharmaceutical Industries Ltd. ADR 13,456 236,826 AstraZeneca plc ADR 6,378 216,087 Cardinal Health, Inc. 3,150 210,798 GlaxoSmithKline plc ADR 4,882 198,209 Jazz Pharmaceuticals plc* 1,351 197,584 AmerisourceBergen Corp. — Class A 2,384 197,276 Endo International plc* 23,012 197,098 Alkermes plc* 3,792 192,785 Novartis AG ADR 2,243 192,562 Perrigo Company plc 2,224 188,262 Novo Nordisk A/S ADR 3,749 180,514 Mylan N.V.* 5,703 178,903 TESARO, Inc.* 1,050 135,555 Neurocrine Biosciences, Inc.* 1,760 107,853 Valeant Pharmaceuticals International, Inc.* 7,404 106,099 PRA Health Sciences, Inc.* 1,370 104,353 Clovis Oncology, Inc.* 1,260 103,824 Premier, Inc. — Class A* 3,040 99,013 ACADIA Pharmaceuticals, Inc.* 2,558 96,360 Catalent, Inc.*,1 2,410 96,207 Mallinckrodt plc* 2,570 96,041 Akorn, Inc.* 2,823 93,695 Avexis, Inc.* 910 88,024 Nektar Therapeutics* 3,630 87,120 Portola Pharmaceuticals, Inc.* 1,530 82,666 DexCom, Inc.* 1,635 79,992 Agios Pharmaceuticals, Inc.* 1,176 78,498 Amicus Therapeutics, Inc.*,1 5,066 76,395 Prestige Brands Holdings, Inc.* 1,480 74,133 Horizon Pharma plc* 5,582 70,780 Sarepta Therapeutics, Inc.* 1,559 70,716 Radius Health, Inc.*,1 1,790 69,005 Ironwood Pharmaceuticals, Inc. — Class A* 4,360 68,757 Array BioPharma, Inc.* 5,572 68,536 Owens & Minor, Inc. 2,129 62,167 Global Blood Therapeutics, Inc.* 1,940 60,237 Supernus Pharmaceuticals, Inc.* 1,400 56,000 Pacira Pharmaceuticals, Inc.* 1,484 55,724 Aerie Pharmaceuticals, Inc.* 1,120 54,432 Impax Laboratories, Inc.* 2,569 52,151 Eagle Pharmaceuticals, Inc.*,1 730 43,537 Synergy Pharmaceuticals, Inc.* 14,720 42,688 Depomed, Inc.* 4,453 25,783 Total Pharmaceuticals 9,750,173 Healthcare-Products - 23.4% Abbott Laboratories 8,331 444,541 Thermo Fisher Scientific, Inc. 2,041 386,157 Danaher Corp. 3,985 341,833 Stryker Corp. 2,320 329,486 Medtronic plc 4,014 312,169 Becton Dickinson and Co. 1,583 310,189 Boston Scientific Corp.* 9,748 284,349 Intuitive Surgical, Inc.* 269 281,342 , Inc. 4,173 261,856 Zimmer Biomet Holdings, Inc. 1,925 225,398 CR Bard, Inc. 703 225,312 Edwards Lifesciences Corp.* 2,033 222,227 Align Technology, Inc.* 939 174,908 Henry Schein, Inc.* 2,126 174,311 Dentsply Sirona, Inc. 2,858 170,937 IDEXX Laboratories, Inc.* 1,060 164,819 Cooper Companies, Inc. 655 155,307 Hologic, Inc.* 4,021 147,530 Teleflex, Inc. 607 146,876 ResMed, Inc. 1,878 144,531 Varian Medical Systems, Inc.* 1,324 132,479 ABIOMED, Inc.* 750 126,450 West Pharmaceutical Services, Inc. 1,273 122,539 Hill-Rom Holdings, Inc. 1,340 99,160 OPKO Health, Inc.*,1 14,433 99,010 Masimo Corp.* 1,130 97,813 Alere, Inc.* 1,913 97,544 Bruker Corp. 3,278 97,521 Bio-Techne Corp. 800 96,712 VWR Corp.* 2,864 94,827 Patterson Companies, Inc. 2,332 90,132 Integra LifeSciences Holdings Corp.* 1,750 88,340 ICU Medical, Inc.* 470 87,350 NuVasive, Inc.* 1,419 78,698 Insulet Corp.* 1,420 78,214 Nevro Corp.* 830 75,430 Natus Medical, Inc.* 1,340 50,250 Total Healthcare-Products 6,516,547 Biotechnology - 21.0% Amgen, Inc. 2,734 509,755 Celgene Corp.* 3,323 484,560 Gilead Sciences, Inc. 5,556 450,147 , Inc.* 1,119 350,381 Regeneron Pharmaceuticals, Inc.* 759 339,364 Vertex Pharmaceuticals, Inc.* 1,883 286,291 Alexion Pharmaceuticals, Inc.* 1,780 249,716 Illumina, Inc.* 1,171 233,263 Incyte Corp.* 1,937 226,125 Alnylam Pharmaceuticals, Inc.* 1,627 191,156 BioMarin Pharmaceutical, Inc.* 1,910 177,764 Kite Pharma, Inc.* 732 131,621 Seattle Genetics, Inc.* 2,280 124,055 Exelixis, Inc.* 4,830 117,031 Bio-Rad Laboratories, Inc. — Class A* 520 115,554 Exact Sciences Corp.* 2,452 115,538 Bioverativ, Inc.* 2,019 115,224

Health Care Fund SCHEDULE OF INVESTMENTS (Unaudited) September 30, 2017

Shares Value COMMON STOCKS† - 99.8% (continued) Biotechnology - 21.0% (continued) Charles River Laboratories International, Inc.* 980 $ 105,860 United Therapeutics Corp.* 900 105,471 Bluebird Bio, Inc.* 750 103,013 Ionis Pharmaceuticals, Inc.* 1,960 99,372 Puma Biotechnology, Inc.* 790 94,603 FibroGen, Inc.* 1,640 88,232 Spark Therapeutics, Inc.* 970 86,485 Medicines Co.* 2,296 85,044 Juno Therapeutics, Inc.* 1,878 84,247 Sage Therapeutics, Inc.* 1,230 76,629 Ligand Pharmaceuticals, Inc. — Class B* 560 76,244 Myriad Genetics, Inc.* 2,025 73,265 Loxo Oncology, Inc.* 780 71,854 Halozyme Therapeutics, Inc.* 3,990 69,306 Ultragenyx Pharmaceutical, Inc.* 1,290 68,705 Intrexon Corp.*,1 3,600 68,436 Esperion Therapeutics, Inc.* 1,040 52,125 Five Prime Therapeutics, Inc.* 1,260 51,547 Acorda Therapeutics, Inc.* 2,172 51,368 Intercept Pharmaceuticals, Inc.*,1 882 51,191 Alder Biopharmaceuticals, Inc.* 3,817 46,758 AMAG Pharmaceuticals, Inc.* 1,720 31,734 Total Biotechnology 5,859,034 Healthcare-Services - 14.7% UnitedHealth Group, Inc. 3,216 629,853 Anthem, Inc. 1,762 334,568 Aetna, Inc. 2,056 326,924 Cigna Corp. 1,688 315,555 Humana, Inc. 1,124 273,840 HCA Healthcare, Inc.* 3,129 249,037 Quintiles IMS Holdings, Inc.* 2,250 213,908 Laboratory Corporation of America Holdings* 1,208 182,372 Centene Corp.* 1,860 179,992 Quest Diagnostics, Inc. 1,696 158,813 DaVita, Inc.* 2,576 152,989 Universal Health Services, Inc. — Class B 1,346 149,325 WellCare Health Plans, Inc.* 730 125,370 Envision Healthcare Corp.* 2,364 106,262 HealthSouth Corp. 2,150 99,653 MEDNAX, Inc.* 2,200 94,864 Acadia Healthcare Company, Inc.* 1,926 91,986 Molina Healthcare, Inc.* 1,330 91,451 LifePoint Health, Inc.* 1,235 71,507 Magellan Health, Inc.* 770 66,451 Amedisys, Inc.* 1,150 64,354 Brookdale Senior Living, Inc. — Class A* 5,890 62,434 Tenet Healthcare Corp.*,1 3,512 57,702 Total Healthcare-Services 4,099,210 Electronics - 2.5% Agilent Technologies, Inc. 3,177 203,963 Mettler-Toledo International, Inc.* 294 184,091 Waters Corp.* 933 167,492 PerkinElmer, Inc. 1,813 125,043 Total Electronics 680,589 Software - 2.2% Cerner Corp.* 3,020 215,387 Veeva Systems, Inc. — Class A* 2,303 129,912 athenahealth, Inc.*,1 840 104,462 Medidata Solutions, Inc.* 1,265 98,746 Allscripts Healthcare Solutions, Inc.* 5,228 74,394 Total Software 622,901 Commercial Services - 1.0% Incorporated Research Holdings, Inc. — Class A* 2,065 108,000 PAREXEL International Corp.* 1,123 98,914 HealthEquity, Inc.* 1,590 80,422 Total Commercial Services 287,336 Total Common Stocks (Cost $15,601,119) 27,815,790

RIGHTS††† - 0.0% Dyax Corp. Expires 01/25/18*,,2 3,790 – Total Rights (Cost $–) –

Face Amount REPURCHASE AGREEMENTS††,3 - 0.4% BNP Paribas issued 09/29/17 at 1.00% due 10/02/17 $ 50,538 50,538 Bank of America Merrill Lynch issued 09/29/17 at 1.05% due 10/02/17 25,269 25,269 HSBC Securities, Inc. issued 09/29/17 at 0.91% due 10/02/17 25,250 25,250 Total Repurchase Agreements (Cost $101,057) 101,057

Shares SECURITIES LENDING COLLATERAL†,4 - 1.1% First American Government Obligations Fund — Class Z, 0.89%5 315,651 315,651 Total Securities Lending Collateral (Cost $315,651) 315,651 Total Investments - 101.3% (Cost $16,017,827) $ 28,232,498 Other Assets & Liabilities, net - (1.3)% (367,300) Total Net Assets - 100.0% $ 27,865,198

Health Care Fund SCHEDULE OF INVESTMENTS (Unaudited) September 30, 2017

* 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 September 30, 2017. 2 Security was fair valued by the Valuation Committee at September 30, 2017. The total market value of fair valued securities amounts to $0, (cost $0) or 0.0% of total net assets. 3 Repurchase Agreements. 4 Securities lending collateral. 5 Rate indicated is the 7 day yield as of September 30, 2017.

ADR — American Depositary Receipt plc — Public Limited Company