| Cerebellum GP, LLC | -- | Sep 30, 20 | -54.15K | -- |
| TEACHERS ADVISORS, LLC | -- | Mar 31, 19 | -562.01K | -- |
| TIAA CREF INVESTMENT MANAGEMENT LLC | -- | Mar 31, 19 | -414.08K | -- |
| QUANTRES ASSET MANAGEMENT Ltd | -- | Mar 31, 19 | -49.60K | -- |
| OppenheimerFunds, Inc. | -- | Mar 31, 19 | -42.43K | -- |
| MITCHELL GROUP INC | -- | Mar 31, 19 | -220.07K | -- |
| AMICA PENSION FUND BOARD OF TRUSTEES | 5.89K | Dec 31, 18 | -- | 41.85% |
| Kaizen Advisory, LLC | 356 | Dec 31, 18 | -7 | 2.53% |
| Mobius Capital Management, LLC | 255.41K | Sep 30, 18 | +255.41K | 1814.23% |
| Talara Capital Management, LLC | 107.39K | Sep 30, 18 | -- | 762.79% |
| WEALTHFRONT CORP | 29.46K | Sep 30, 18 | +269 | 209.29% |
| CLINTON GROUP INC | 26.04K | Sep 30, 18 | +26.04K | 184.98% |
| Zions Bancorporation | 170 | Sep 30, 18 | +170 | 1.21% |
| KHP Capital, LLC | -- | Sep 30, 18 | -183 | -- |
| PEAK6 Group LLC | 72.19K | Jun 30, 18 | -172.91K | 512.79% |
| OLD MUTUAL CUSTOMISED SOLUTIONS (PROPRIETARY) LTD | 9.90K | Jun 30, 18 | -- | 70.32% |
| Global X Management CO LLC | 1.32K | Jun 30, 18 | +86 | 9.36% |
| EXXONMOBIL INVESTMENT MANAGEMENT INC /TX | 30.57K | Mar 31, 18 | -1.10K | 217.18% |
| INTEGRAL DERIVATIVES, LLC | -- | Mar 31, 18 | -10.02K | -- |
| Delpha Capital Management, LLC | -- | Mar 31, 18 | -1.39K | -- |
| Numeric Investors LLC | 173.50K | Dec 31, 17 | +77.70K | 1232.42% |
| RAINIER INVESTMENT MANAGEMENT LLC | 93.79K | Dec 31, 17 | -50.92K | 666.22% |
| CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. | 37.45K | Dec 31, 17 | +3.82K | 266.03% |
| GLG LLC | 10.00K | Dec 31, 17 | +233 | 71.03% |
| BB&T INVESTMENT SERVICES, INC. | 1.80K | Dec 31, 17 | +157 | 12.78% |
| ROCKEFELLER FINANCIAL SERVICES INC | 858 | Dec 31, 17 | -- | 6.09% |
| TPH Asset Management, LLC | -- | Dec 31, 17 | -7.54K | -- |
| SPOT TRADING L.L.C. | 28.12K | Sep 30, 17 | -3.12K | 199.72% |
| Acrospire Investment Management LLC | -- | Sep 30, 17 | -1.00K | -- |
| Delta Lloyd Asset Management N.V. | 51.18K | Jun 30, 17 | +51.18K | 363.57% |
| Airain ltd | 49.13K | Jun 30, 17 | -28.26K | 348.98% |
| Virtu KCG Holdings LLC | 42.07K | Jun 30, 17 | +28.61K | 298.84% |
| ABERDEEN ASSET MANAGEMENT PLC/UK | 34.57K | Jun 30, 17 | -53.53K | 245.57% |
| Geneva Advisors, LLC | 25.51K | Jun 30, 17 | -3.63K | 181.20% |
| Independent Portfolio Consultants, Inc. | 20.83K | Jun 30, 17 | -23.11K | 147.98% |
| CAPSTONE ASSET MANAGEMENT CO | 15.73K | Jun 30, 17 | +3.84K | 111.77% |
| Commonwealth Equity Services, Inc | 8.99K | Jun 30, 17 | +1.99K | 63.83% |
| TFS CAPITAL LLC | -- | Jun 30, 17 | -11.13K | -- |
| JANUS HENDERSON INVESTORS US LLC | 1.54M | Mar 31, 17 | -88.64K | 10925.69% |
| DELTA LLOYD NV | 45.54K | Mar 31, 17 | -5.09K | 323.48% |
| Spot Trading L.L.C | 11.54K | Mar 31, 17 | +11.54K | 81.99% |
| CT Financial Advisors LLC | 220 | Mar 31, 17 | -- | 1.56% |
| NEW YORK LIFE TRUST CO | 66 | Mar 31, 17 | -1.13K | 0.47% |
| Princeton Alpha Management LP | -- | Mar 31, 17 | -7.94K | -- |
| BlackRock Institutional Trust Company, N.A. | 5.68M | Dec 31, 16 | +88.41K | 40355.03% |
| BlackRock Fund Advisors | 3.90M | Dec 31, 16 | +199.43K | 27674.67% |
| BlackRock Group LTD | 1.76M | Dec 31, 16 | +111.77K | 12477.50% |
| BlackRock Investment Management, LLC | 682.81K | Dec 31, 16 | +19.36K | 4850.20% |
| BLACKROCK ADVISORS LLC | 371.61K | Dec 31, 16 | +20.58K | 2639.64% |
| BlackRock Japan Co. Ltd | 292.59K | Dec 31, 16 | +14.19K | 2078.32% |
| CenterStar Fund, LLC | 17.60K | Dec 31, 16 | +17.60K | 124.99% |
| NEW CENTURY INVESTMENT MANAGEMENT, INC | 10.00K | Dec 31, 16 | +10.00K | 71.03% |
| MSI Financial Services Inc | 1.30K | Dec 31, 16 | -- | 9.23% |
| Emerald Acquisition Ltd. | 484.73K | Sep 30, 16 | +391.90K | 3443.15% |
| Vollero Beach Capital Partners LLC | 299.86K | Sep 30, 16 | -104.76K | 2129.99% |
| Raveneur Investment Group LP | 256.74K | Sep 30, 16 | -39.01K | 1823.67% |
| BRC Investment Management LLC | 176.63K | Sep 30, 16 | +105.30K | 1254.68% |
| Cupps Capital Management, LLC | 14.42K | Sep 30, 16 | +13.80K | 102.43% |
| Mizuho Asset Management Co.,Ltd. | 1.68K | Sep 30, 16 | -1.00K | 11.94% |
| Shinko Asset Management Co., Ltd. | 507 | Sep 30, 16 | -- | 3.60% |
| ZWEIG ADVISERS LLC | 78.00K | Jun 30, 16 | +78.00K | 554.06% |
| Visium Asset Management, LP | 44.01K | Jun 30, 16 | -140.57K | 312.63% |
| SOCIETE GENERALE | 24.49K | Jun 30, 16 | +24.49K | 173.95% |
| NEWGATE CAPITAL MANAGEMENT LLC | 14.87K | Jun 30, 16 | +14.87K | 105.65% |
| RUSSELL FRANK CO/ | 88.18K | Mar 31, 16 | -347.29K | 626.40% |
| VIRGINIA RETIREMENT SYSTEM | 74.30K | Mar 31, 16 | +74.30K | 527.77% |
| FIDUCIARY MANAGEMENT ASSOCIATES LLC | 10.91K | Mar 31, 16 | +10.91K | 77.50% |
| TD Securities (USA) LLC | 45 | Mar 31, 16 | +9 | 0.32% |
| Schonfeld Group Holdings LLC | 43.67K | Dec 31, 15 | +37.38K | 310.24% |
| Ada Investment Management, LP | -- | Dec 31, 15 | -8.45K | -- |
| TBP Investments Management, LLC | 129.00K | Sep 30, 15 | -12.60K | 916.32% |
| Karamaan Group, LLC | 58.54K | Sep 30, 15 | -- | 415.81% |
| OFI Advisors LLC | 4.88K | Sep 30, 15 | -264 | 34.63% |
| Index Management Solutions, LLC | 143 | Sep 30, 15 | -8 | 1.02% |
| Absolute Return Capital, LLC | -- | Sep 30, 15 | -36.97K | -- |
| GREEN ARROW CAPITAL MANAGEMENT LLC | -- | Sep 30, 15 | -45.34K | -- |
| DECADE CAPITAL MANAGEMENT LLC | -- | Sep 30, 15 | -185.22K | -- |
| MANAGED ACCOUNT ADVISORS LLC | 469.01K | Jun 30, 15 | -1.94K | 3331.50% |
| Quadrature Capital LLP | 6.83K | Jun 30, 15 | +6.83K | 48.52% |
| GUARDIAN INVESTOR SERVICES LLC | 1.11K | Mar 31, 15 | +166 | 7.88% |
| BOSTON PRIVATE BANK & TRUST CO | 823 | Mar 31, 15 | -- | 5.85% |
| Placemark Investments, Inc. | 195.42K | Dec 31, 14 | +16.32K | 1388.10% |
| SHAPIRO ROBERT N | 785 | Dec 31, 14 | -556 | 5.58% |
| Li Winifred I | 279 | Dec 31, 14 | +233 | 1.98% |
| Nexus Asset Management LLC | 449.56K | Sep 30, 14 | +449.56K | 3193.37% |
| UBS AG | 140.96K | Sep 30, 14 | +63.27K | 1001.26% |
| SEI TRUST CO | 28.20K | Sep 30, 14 | +24.05K | 200.31% |
| SAC Capital Advisors LP | 195.45K | Mar 31, 14 | -272.59K | 1388.31% |
| F&C Asset Management plc | 8.38K | Mar 31, 14 | -- | 59.51% |
| GLG INC. | 117.09K | Dec 31, 13 | -35.20K | 831.73% |
| Jane Street Holding, LLC | 15.34K | Dec 31, 13 | -40.19K | 108.99% |
| GALAXY CAPITAL TRADING LTD | 9.00K | Dec 31, 13 | +9.00K | 63.93% |
| Compass Efficient Model Portfolios, LLC | 250 | Dec 31, 13 | +250 | 1.78% |
| NORTHERN TRUST CO OF CONNECTICUT | -- | Dec 31, 13 | -126.96K | -- |
| CONNOR CLARK & LUNN INVESTMENT MANAGEMENT LTD | -- | Dec 31, 13 | -75.80K | -- |
| STIFEL NICOLAUS & CO INC \MO\ | 11.85K | Sep 30, 13 | +11.85K | 84.14% |
| Irish Life Investment Managers Ltd. | 45.86K | Jun 30, 13 | -5.45K | 325.77% |
| KNIGHT CAPITAL GROUP LLC | -- | Jun 30, 13 | -56.39K | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 69.64K | Mar 31, 13 | -3.07K | 494.64% |
| Manulife Investment Management (North America) Ltd | 43.20K | Mar 31, 13 | +905 | 306.84% |
| First Allied Securities, Inc. | 22.61K | Jun 30, 12 | +11.81K | 160.63% |
| SUMITOMO MITSUI TRUST BANK Ltd | 174.09K | Mar 31, 11 | -672 | 1236.58% |
| abrdn Inc. | 12.90K | Dec 31, 10 | +12.90K | 91.63% |
| VALUE LINE INC | 9.35K | Sep 30, 10 | -35.00K | 66.42% |
| RBC Trust Co (International) Ltd | 401 | Jun 30, 09 | +401 | 2.85% |
| RBC Dominion Securities Inc. | 100 | Dec 31, 08 | -- | 0.71% |
| BNP PARIBAS ASSET MANAGEMENT FRANCE | 29.93K | Sep 30, 08 | +29.93K | 212.60% |
| LEHMAN BROTHERS HOLDINGS INC. PLAN TRUST | 55.99K | Jun 30, 08 | -23.19K | 397.71% |
| STICHTING PENSIOENFONDS ABP | 180.21K | Dec 31, 06 | +180.21K | 1280.05% |
| MERCANTILE BANKSHARES CORP | 29.40K | Dec 31, 06 | +29.40K | 208.84% |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC | 128.45K | Dec 31, 04 | -83.92K | 912.42% |
| RBC Global Asset Management (U.S.) | -- | Mar 31, 04 | -58.78K | -- |
| PRINCIPAL GLOBAL INVESTORS | 178.87K | Sep 30, 01 | -114.57K | 1270.53% |
| PRINCIPAL LIFE INSURANCE CO | 178.87K | Sep 30, 01 | -114.57K | 1270.53% |
| PRUDENTIAL INSURANCE CO OF AMERICA | 127.10K | Sep 30, 01 | +3.50K | 902.83% |
| RBC Capital Markets, LLC | 16 | Mar 31, 01 | +16 | 0.11% |
| COMERICA INC /NEW/ | 49.85K | Sep 30, 00 | +49.85K | 354.10% |
| VOYA INVESTMENTS, LLC | 160.10K | Jun 30, 00 | +160.10K | 1137.24% |