| BBVA USA Bancshares, Inc. | -- | Mar 31, 21 | -447.96K | -- |
| Aperio Group, LLC | 40.69K | Dec 31, 20 | -30.05K | -- |
| ETRADE Capital Management LLC | -- | Sep 30, 20 | -15.00K | -- |
| CA Family Wealth, LLC | 12.12K | Mar 31, 20 | -8.68K | -- |
| ELLIOTT MANAGEMENT CORP | 11.70M | Dec 31, 19 | -- | -- |
| LADENBURG THALMANN FINANCIAL SERVICES INC. | 1.94K | Dec 31, 19 | -346 | -- |
| Advisor Group, Inc. | 1.92K | Dec 31, 19 | -1.80K | -- |
| Elkfork Partners LLC | -- | Sep 30, 19 | -62.59K | -- |
| RIVERHEAD CAPITAL MANAGEMENT LLC | -- | Sep 30, 19 | -32.55K | -- |
| Flinton Capital Management LLC | -- | Sep 30, 19 | -29.46K | -- |
| Meadow Creek Investment Management LLC | -- | Sep 30, 19 | -40.50K | -- |
| Glen Harbor Capital Management LLC | -- | Sep 30, 19 | -51.55K | -- |
| COWEN INC. | 69.71K | Jun 30, 19 | +69.71K | -- |
| EAGLE BOSTON INVESTMENT MANAGEMENT INC | -- | Jun 30, 19 | -135.60K | -- |
| TIAA CREF INVESTMENT MANAGEMENT LLC | 647.69K | Mar 31, 19 | -20.23K | -- |
| TEACHERS ADVISORS, LLC | 421.59K | Mar 31, 19 | +128.89K | -- |
| THOMPSON RUBINSTEIN INVESTMENT MANAGEMENT INC /OR/ | 281.49K | Mar 31, 19 | -3.00K | -- |
| OppenheimerFunds, Inc. | 64.36K | Mar 31, 19 | -23.08K | -- |
| Jump Trading, LLC | 39.03K | Mar 31, 19 | +39.03K | -- |
| BREMER TRUST NATIONAL ASSOCIATION | 4.96K | Dec 31, 18 | +4.96K | -- |
| WealthTrust-Arizona, LLC | 1.15K | Dec 31, 18 | +103 | -- |
| Talara Capital Management, LLC | 1.79M | Sep 30, 18 | -- | -- |
| OLD MUTUAL CUSTOMISED SOLUTIONS (PROPRIETARY) LTD | 7.60K | Jun 30, 18 | -- | -- |
| DENVER INVESTMENT ADVISORS LLC | 15.14K | Mar 31, 18 | -- | -- |
| Delpha Capital Management, LLC | -- | Mar 31, 18 | -2.73K | -- |
| INTEGRAL DERIVATIVES, LLC | -- | Mar 31, 18 | -57.29K | -- |
| Numeric Investors LLC | 209.50K | Dec 31, 17 | +174.80K | -- |
| CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. | 142.61K | Dec 31, 17 | +31.97K | -- |
| BB&T INVESTMENT SERVICES, INC. | 68 | Dec 31, 17 | +68 | -- |
| I.G. INVESTMENT MANAGEMENT, LTD. | 850.00K | Sep 30, 17 | +850.00K | -- |
| Scoria Capital Partners LP | 90.00K | Sep 30, 17 | +90.00K | -- |
| SPOT TRADING L.L.C. | -- | Sep 30, 17 | -4.19K | -- |
| Airain ltd | 332.60K | Jun 30, 17 | +64.47K | -- |
| CAPSTONE ASSET MANAGEMENT CO | 19.27K | Jun 30, 17 | +320 | -- |
| Virtu KCG Holdings LLC | 10.44K | Jun 30, 17 | -81.57K | -- |
| JANUS HENDERSON INVESTORS US LLC | 99.20K | Mar 31, 17 | -100.10K | -- |
| NEW YORK LIFE TRUST CO | -- | Mar 31, 17 | -2.18K | -- |
| Princeton Alpha Management LP | -- | Mar 31, 17 | -24.62K | -- |
| BlackRock Fund Advisors | 9.83M | Dec 31, 16 | +632.96K | -- |
| BlackRock Institutional Trust Company, N.A. | 7.46M | Dec 31, 16 | +251.97K | -- |
| BlackRock Investment Management, LLC | 838.95K | Dec 31, 16 | +126.93K | -- |
| BlackRock Group LTD | 306.40K | Dec 31, 16 | +45.22K | -- |
| BLACKROCK ADVISORS LLC | 204.03K | Dec 31, 16 | +11.06K | -- |
| KANALY TRUST CO | 109.91K | Dec 31, 16 | -- | -- |
| CenterStar Fund, LLC | 10.60K | Dec 31, 16 | +10.60K | -- |
| MSI Financial Services Inc | 1.64K | Dec 31, 16 | -- | -- |
| EverPoint Asset Management, LLC | -- | Dec 31, 16 | -200.00K | -- |
| Vollero Beach Capital Partners LLC | 640.71K | Sep 30, 16 | +100.37K | -- |
| Emerald Acquisition Ltd. | 489.86K | Sep 30, 16 | -346.83K | -- |
| BRC Investment Management LLC | 199.32K | Sep 30, 16 | -4.03K | -- |
| ANALYTIC INVESTORS, LLC | 46.13K | Sep 30, 16 | -177.81K | -- |
| NCM Capital Advisers, Inc. | 4.50K | Sep 30, 16 | -300 | -- |
| SOCIETE GENERALE | 43.02K | Jun 30, 16 | +43.02K | -- |
| Visium Asset Management, LP | -- | Jun 30, 16 | -345.85K | -- |
| RUSSELL FRANK CO/ | 839.02K | Mar 31, 16 | +535.20K | -- |
| VIRGINIA RETIREMENT SYSTEM | 337.00K | Mar 31, 16 | +337.00K | -- |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION | 2.25M | Dec 31, 15 | -- | -- |
| Schonfeld Group Holdings LLC | 79.48K | Dec 31, 15 | +59.15K | -- |
| Santa Fe Partners LLC | 78.57K | Dec 31, 15 | -104.70K | -- |
| METROPOLITAN CAPITAL ADVISORS INC | 15.40K | Dec 31, 15 | +15.40K | -- |
| OFI Advisors LLC | 41.46K | Sep 30, 15 | +22.52K | -- |
| Index Management Solutions, LLC | 280 | Sep 30, 15 | +14 | -- |
| Invictus RG Pte. Ltd. | -- | Sep 30, 15 | -4.65K | -- |
| MANAGED ACCOUNT ADVISORS LLC | 425.74K | Jun 30, 15 | -32.49K | -- |
| Nair Vinay | -- | Jun 30, 15 | -17.30K | -- |
| GUARDIAN INVESTOR SERVICES LLC | 1.12K | Mar 31, 15 | -28 | -- |
| HABERER REGISTERED INVESTMENT ADVISOR INC | 114 | Mar 31, 15 | -- | -- |
| Mariner Wealth Advisors-NYC, LLC | 106 | Mar 31, 15 | +106 | -- |
| BOSTON PRIVATE BANK & TRUST CO | 62 | Mar 31, 15 | -- | -- |
| Placemark Investments, Inc. | 54.69K | Dec 31, 14 | -19.23K | -- |
| ELEFANTE MICHAEL B | 6.10K | Dec 31, 14 | -25 | -- |
| TradeLink Global Equity LLC | 5.40K | Dec 31, 14 | +5.40K | -- |
| SHAPIRO ROBERT N | 1.38K | Dec 31, 14 | -455 | -- |
| Li Winifred I | 573 | Dec 31, 14 | +573 | -- |
| VALLEY NATIONAL BANCORP | -- | Dec 31, 14 | -600 | -- |
| UBS AG | 132.39K | Sep 30, 14 | -704 | -- |
| BlueCrest Capital Management LLP | 42.87K | Sep 30, 14 | +33.73K | -- |
| 1919 Investment Counsel, LLC | 650 | Sep 30, 14 | -- | -- |
| Stifel Trust Company, N.A. | 200 | Sep 30, 14 | -- | -- |
| F&C Asset Management plc | 13.54K | Mar 31, 14 | +864 | -- |
| SAC Capital Advisors LP | -- | Mar 31, 14 | -68.40K | -- |
| LMR Master Fund Ltd | 49.85K | Dec 31, 13 | +49.85K | -- |
| GLG INC. | 18.93K | Dec 31, 13 | -- | -- |
| Daiwa Capital Markets America Inc. | 5.10K | Dec 31, 13 | +5.10K | -- |
| US GLOBAL INVESTORS FUNDS | 4.20K | Dec 31, 13 | +4.20K | -- |
| NORTHERN TRUST CO OF CONNECTICUT | -- | Dec 31, 13 | -74.70K | -- |
| Irish Life Investment Managers Ltd. | 73.05K | Jun 30, 13 | +5.02K | -- |
| KNIGHT CAPITAL GROUP LLC | 15.66K | Jun 30, 13 | -7.00K | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 94.64K | Mar 31, 13 | -1.47K | -- |
| Manulife Investment Management (North America) Ltd | 56.80K | Mar 31, 13 | +1.20K | -- |
| First Allied Securities, Inc. | 790 | Jun 30, 12 | -50 | -- |
| Boston Trust Walden Co | -- | Dec 31, 11 | -4.43K | -- |
| SUMITOMO MITSUI TRUST BANK Ltd | 247.10K | Mar 31, 11 | +65.48K | -- |
| abrdn Inc. | 17.19K | Dec 31, 10 | +17.19K | -- |
| VALUE LINE INC | 35.00K | Sep 30, 10 | +35.00K | -- |