SCHEDULE OF INVESTMENTS (Unaudited) June 30, 2016

S&P SMALLCAP 600® PURE GROWTH FUND

SHARES VALUE

COMMON STOCKS† - 98.9%

CONSUMER, NON-CYCLICAL - 33.3% Ligand Pharmaceuticals, Inc. — Class B* 2,043 $ 243,669 Supernus Pharmaceuticals, Inc.* 10,945 222,950 AMN Healthcare Services, Inc.* 4,000 159,880 Depomed, Inc.* 7,795 152,938 LendingTree, Inc.* 1,606 141,858 NuVasive, Inc.* 2,221 132,638 Masimo Corp.* 2,458 129,082 MiMedx Group, Inc.* 15,430 123,131 Cross Country Healthcare, Inc.* 8,684 120,881 NutriSystem, Inc. 4,710 119,446 Zeltiq Aesthetics, Inc.* 4,270 116,699 On Assignment, Inc.* 3,002 110,924 Almost Family, Inc.* 2,549 108,613 Cynosure, Inc. — Class A* 2,149 104,538 Vascular Solutions, Inc.* 2,500 104,150 Cambrex Corp.* 1,959 101,339 Cantel Medical Corp. 1,381 94,916 Repligen Corp.* 3,458 94,611 Cal-Maine Foods, Inc. 2,130 94,402 Surgical Care Affiliates, Inc.* 1,962 93,529 Emergent BioSolutions, Inc.* 3,226 90,715 Calavo Growers, Inc. 1,287 86,229 TrueBlue, Inc.* 4,486 84,875 Neogen Corp.* 1,460 82,125 US Physical Therapy, Inc. 1,300 78,273 B&G Foods, Inc. 1,597 76,975 Lannett Company, Inc.* 3,228 76,794 LHC Group, Inc.* 1,736 75,134 Nektar Therapeutics* 5,194 73,911 Merit Medical Systems, Inc.* 3,669 72,756 Albany Molecular Research, Inc.* 5,253 70,600 Natus Medical, Inc.* 1,862 70,384 SurModics, Inc.* 2,865 67,270 Matthews International Corp. — Class A 1,170 65,099 Monro Muffler Brake, Inc. 990 62,924 Heidrick & Struggles International, Inc. 3,662 61,815 Chemed Corp. 438 59,704 Healthcare Services Group, Inc. 1,380 57,104 Luminex Corp.* 2,790 56,442 WD-40 Co. 456 53,557 Integra LifeSciences Holdings Corp.* 660 52,655 CorVel Corp.* 1,090 47,066 Korn/Ferry International 2,273 47,051 Impax Laboratories, Inc.* 1,152 33,201 Acorda Therapeutics, Inc.* 1,125 28,693 Phibro Animal Health Corp. — Class A 1,014 18,921 Total Consumer, Non-cyclical 4,220,467

FINANCIAL - 20.0% CoreSite Realty Corp. 2,033 180,307 , Inc. 8,525 149,699 Opus 4,330 146,353 Home BancShares, Inc. 6,020 119,136 3,910 116,126 Universal Insurance Holdings, Inc. 6,109 113,505 Walker & Dunlop, Inc.* 4,631 105,494 Talmer Bancorp, Inc. — Class A 5,480 105,052 Employers Holdings, Inc. 3,610 104,762 Hanmi Financial Corp. 4,040 94,900 BofI Holding, Inc.* 5,284 93,580 Acadia Realty Trust 2,588 91,926 Pinnacle Financial Partners, Inc. 1,873 91,496 Simmons First National Corp. — Class A 1,940 89,599 Four Corners Property Trust, Inc. 4,251 87,528 Bank Mutual Corp. 10,497 80,617 Northfield Bancorp, Inc. 5,144 76,286 ServisFirst Bancshares, Inc. 1,520 75,073 AMERISAFE, Inc. 1,219 74,627 Evercore Partners, Inc. — Class A 1,605 70,925 LegacyTexas Financial Group, Inc. 2,477 66,656 HFF, Inc. — Class A 2,281 65,875 RLI Corp. 888 61,077 BBCN Bancorp, Inc. 3,848 57,412 Banner Corp. 1,248 53,090 Financial Engines, Inc. 2,018 52,206 Retail Opportunity Investments Corp. 2,358 51,098 First Financial Bankshares, Inc. 1,544 50,628 Total Financial 2,525,033

INDUSTRIAL - 18.8% Fabrinet* 5,164 191,687 TASER International, Inc.* 6,728 167,393 PGT, Inc.* 15,846 163,213 Dycom Industries, Inc.* 1,703 152,861 Headwaters, Inc.* 7,731 138,694 US Concrete, Inc.* 2,158 131,444 Universal Forest Products, Inc. 1,362 126,244 Drew Industries, Inc. 1,388 117,758 II-VI, Inc.* 5,596 104,981 Lydall, Inc.* 2,701 104,151 Griffon Corp. 6,094 102,745 AZZ, Inc. 1,634 98,007 John Bean Technologies Corp. 1,422 87,055 US Ecology, Inc. 1,892 86,937 Comfort Systems USA, Inc. 2,562 83,444 Methode Electronics, Inc. 2,091 71,575 Sturm Ruger & Company, Inc. 1,005 64,330 Exponent, Inc. 1,087 63,492 Trex Company, Inc.* 1,380 61,990 AAON, Inc. 2,162 59,477 Apogee Enterprises, Inc. 1,273 59,004 Proto Labs, Inc.* 899 51,746 Matson, Inc. 1,484 47,918 SCHEDULE OF INVESTMENTS (Unaudited)(concluded) June 30, 2016

S&P SMALLCAP 600® PURE GROWTH FUND

SHARES VALUE

OSI Systems, Inc.* 560 $ 32,553 Total Industrial 2,368,699

TECHNOLOGY - 9.9% Cirrus Logic, Inc.* 4,040 156,713 Ebix, Inc. 2,704 129,522 Take-Two Interactive Software, Inc.* 2,844 107,844 Blackbaud, Inc. 1,547 105,041 ExlService Holdings, Inc.* 1,840 96,435 Monolithic Power Systems, Inc. 1,298 88,679 Kopin Corp.* 38,426 85,305 Tessera Technologies, Inc. 2,445 74,915 Medidata Solutions, Inc.* 1,570 73,586 Synchronoss Technologies, Inc.* 1,830 58,304 CEVA, Inc.* 2,110 57,329 Cray, Inc.* 1,894 56,668 Rambus, Inc.* 4,417 53,357 Omnicell, Inc.* 1,532 52,440 Virtusa Corp.* 1,656 47,825 Total Technology 1,243,963

CONSUMER, CYCLICAL - 9.2% Installed Building Products, Inc.* 4,671 169,511 Meritage Homes Corp.* 4,452 167,128 Lithia Motors, Inc. — Class A 1,175 83,507 American Woodmark Corp.* 1,244 82,577 Monarch Casino & Resort, Inc.* 3,456 75,928 Allegiant Travel Co. — Class A 497 75,295 Papa John’s International, Inc. 1,041 70,787 Hawaiian Holdings, Inc.* 1,808 68,632 Ruth’s Hospitality Group, Inc. 3,906 62,301 Popeyes Louisiana Kitchen, Inc.* 1,076 58,793 Boyd Gaming Corp.* 3,149 57,942 Interface, Inc. — Class A 3,761 57,355 Gentherm, Inc.* 1,604 54,937 Francesca’s Holdings Corp.* 3,823 42,244 Sonic Corp. 1,072 28,998 Total Consumer, Cyclical 1,155,935

COMMUNICATIONS - 4.8% LogMeIn, Inc.* 2,151 136,438 8x8, Inc.* 6,820 99,640 Stamps.com, Inc.* 1,130 98,785 World Wrestling Entertainment, Inc. — Class A 4,368 80,415 NIC, Inc. 3,087 67,729 HealthStream, Inc.* 2,222 58,927 Blue Nile, Inc. 1,417 38,797 General Communication, Inc. — Class A* 1,636 25,849 Total Communications 606,580

BASIC MATERIALS - 1.9% Balchem Corp. 1,334 79,573 Innospec, Inc. 1,380 63,466 Deltic Timber Corp. 800 53,704 Aceto Corp. 2,108 46,144 Total Basic Materials 242,887

ENERGY - 0.5% Synergy Resources Corp.* 9,204 61,299

UTILITIES - 0.5% Piedmont Natural Gas Company, Inc. 1,017 61,142

Total Common Stocks (Cost $9,887,538) 12,486,005

FACE AMOUNT

REPURCHASE AGREEMENT††,1 - 0.4% HSBC Group issued 06/30/16 at 0.26% due 07/01/16 $ 48,852 48,852 Total Repurchase Agreement (Cost $48,852) 48,852

Total Investments - 99.3% (Cost $9,936,390) $ 12,534,857 Other Assets & Liabilities, net - 0.7% 87,160 Total Net Assets - 100.0% $ 12,622,017

* Non-income producing security. † Value determined based on Level 1 inputs. †† Value determined based on Level 2 inputs. 1 Repurchase Agreement.