| Sound Point Capital Management, LP | -- | Dec 31, 21 | -11.72K | -- |
| Berman Capital Advisors, LLC | 8 | Sep 30, 21 | +8 | -- |
| Aperio Group, LLC | 13.85K | Dec 31, 20 | -1.62K | -- |
| Proxima Capital Management, LLC | 26.00K | Sep 30, 20 | -- | -- |
| Quadrant Capital Management, LLC | 13.88K | Dec 31, 19 | -- | -- |
| Highstreet Asset Management Inc. | 63 | Dec 31, 19 | -- | -- |
| LADENBURG THALMANN FINANCIAL SERVICES INC. | 21 | Dec 31, 19 | -- | -- |
| Advisor Group, Inc. | -- | Dec 31, 19 | -5 | -- |
| Glacier Peak Capital LLC | 50.87K | Sep 30, 19 | -- | -- |
| TEACHERS ADVISORS, LLC | 38.83K | Mar 31, 19 | +2.45K | -- |
| TIAA CREF INVESTMENT MANAGEMENT LLC | 31.96K | Mar 31, 19 | -- | -- |
| Omega Advisors Inc. | 783.08K | Dec 31, 18 | -162.31K | -- |
| Archer Capital Management, L.P. | 114.23K | Dec 31, 18 | -44.06K | -- |
| Horizon Kinetics LLC | -- | Dec 31, 18 | -8.80K | -- |
| Altalis Capital Management LLC | 72.34K | Jun 30, 18 | -52.14K | -- |
| PEAK6 Group LLC | 7.09K | Jun 30, 18 | +7.09K | -- |
| Hutchin Hill Capital, LP | 9.60K | Dec 31, 17 | +1.70K | -- |
| Numeric Investors LLC | 7.60K | Dec 31, 17 | +100 | -- |
| CROFT-LEOMINSTER INC | -- | Dec 31, 17 | -8.80K | -- |
| SPOT TRADING L.L.C. | -- | Sep 30, 17 | -466 | -- |
| Acrospire Investment Management LLC | -- | Sep 30, 17 | -18 | -- |
| BlackRock Fund Advisors | 389.52K | Dec 31, 16 | +67.58K | -- |
| BlackRock Institutional Trust Company, N.A. | 341.27K | Dec 31, 16 | +21.64K | -- |
| WILLIAM HARRIS INVESTORS INC | 182.55K | Dec 31, 16 | +182.55K | -- |
| BlackRock Investment Management, LLC | 49.24K | Dec 31, 16 | -48 | -- |
| BlackRock Group LTD | 8.74K | Dec 31, 16 | +587 | -- |
| BLACKROCK ADVISORS LLC | 6.42K | Dec 31, 16 | -120 | -- |
| Emerald Acquisition Ltd. | 8.88K | Sep 30, 16 | +8.88K | -- |
| CHESAPEAKE PARTNERS MANAGEMENT CO INC/MD | 130.53K | Jun 30, 16 | -2.38K | -- |
| RUSSELL FRANK CO/ | 15.50K | Mar 31, 16 | +900 | -- |
| BLUE ARROW CAPITAL MANAGEMENT LLC | -- | Sep 30, 15 | -45.75K | -- |
| Loeb Offshore Management LP | 125.82K | Dec 31, 14 | +16.58K | -- |
| UBS AG | 884 | Sep 30, 14 | -429 | -- |
| Hatteras Alternative Mutual Funds, LLC | 21.70K | Jun 30, 14 | -- | -- |
| Roaring Blue Lion Capital Management, L.P. | 11.36K | Jun 30, 14 | -16.98K | -- |
| SAC Capital Advisors LP | 10.01K | Mar 31, 14 | +10.01K | -- |
| NORTHERN TRUST CO OF CONNECTICUT | -- | Dec 31, 13 | -181.68K | -- |
| KNIGHT CAPITAL GROUP LLC | 7.43K | Jun 30, 13 | +3.53K | -- |
| Irish Life Investment Managers Ltd. | 564 | Jun 30, 13 | -- | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 5.09K | Mar 31, 13 | -151 | -- |
| Manulife Investment Management (North America) Ltd | 4.14K | Mar 31, 13 | +40 | -- |
| LIBERTY MUTUAL INSURANCE CO | -- | Dec 31, 08 | -13.40K | -- |