| MRCap LP | -- | Sep 30, 20 | -25.00K | -- |
| Bluefin Trading, LLC | 19.77K | Jun 30, 20 | -108.07K | -- |
| NumerixS Investment Technologies Inc | 9.40K | Jun 30, 20 | -19.61K | -- |
| JUMP TRADING, LLC | 7.69K | Jun 30, 20 | +7.69K | -- |
| Brookfield BHS Advisors LLC | 366.47K | Mar 31, 20 | +366.47K | -- |
| Elk Creek Partners, LLC | 135.10K | Mar 31, 20 | +2.38K | -- |
| Centenus Global Management, LP | 20.00K | Mar 31, 20 | +20.00K | -- |
| PIEDMONT INVESTMENT ADVISORS INC | -- | Mar 31, 20 | -6.01K | -- |
| LADENBURG THALMANN FINANCIAL SERVICES INC. | 6.90K | Dec 31, 19 | +977 | -- |
| Advisor Group, Inc. | 2.19K | Dec 31, 19 | +1.26K | -- |
| Tuscan Ridge Asset Management LLC | -- | Dec 31, 19 | -16.50K | -- |
| Meghalaya Partners, L.P. | 37.50K | Sep 30, 19 | +22.50K | -- |
| Alpine Group USVI, LLC | 5.05K | Sep 30, 19 | +5.05K | -- |
| COWEN INC. | 11.84K | Jun 30, 19 | +11.84K | -- |
| Balter Liquid Alternatives, LLC | -- | Jun 30, 19 | -29.48K | -- |
| OppenheimerFunds, Inc. | 490.54K | Mar 31, 19 | +478.86K | -- |
| TEACHERS ADVISORS, LLC | 135.91K | Mar 31, 19 | +3.62K | -- |
| TIAA CREF INVESTMENT MANAGEMENT LLC | 128.56K | Mar 31, 19 | -666 | -- |
| CAERUS INVESTORS, LLC | 66.12K | Mar 31, 19 | -71.88K | -- |
| NEXT Financial Holdings | 74 | Mar 31, 19 | +74 | -- |
| Sapphire Star Partners LP | 12.60K | Dec 31, 18 | +335 | -- |
| WealthTrust-Arizona, LLC | 70 | Dec 31, 18 | -- | -- |
| Numeric Investors LLC | 16.70K | Dec 31, 17 | +16.70K | -- |
| PACIFIC ALTERNATIVE ASSET MANAGEMENT COMPANY, LLC | 36.59K | Sep 30, 17 | -10.28K | -- |
| 1st Global Advisors, Inc. | 38.74K | Jun 30, 17 | +38.74K | -- |
| Airain ltd | -- | Jun 30, 17 | -33.04K | -- |
| DIALECTIC CAPITAL MANAGEMENT, LP | -- | Mar 31, 17 | -19.82K | -- |
| BlackRock Fund Advisors | 932.92K | Dec 31, 16 | +138.11K | -- |
| BlackRock Institutional Trust Company, N.A. | 661.04K | Dec 31, 16 | +39.74K | -- |
| BlackRock Investment Management, LLC | 111.96K | Dec 31, 16 | +56 | -- |
| WALL STREET ASSOCIATES | 85.10K | Dec 31, 16 | -78.10K | -- |
| BLACKROCK ADVISORS LLC | 14.42K | Dec 31, 16 | -412 | -- |
| BlackRock Group LTD | 10.86K | Dec 31, 16 | +1.66K | -- |
| MSI Financial Services Inc | 589 | Dec 31, 16 | -2.82K | -- |
| Emerald Acquisition Ltd. | 322.86K | Sep 30, 16 | -32.56K | -- |
| ANALYTIC INVESTORS, LLC | 112.59K | Sep 30, 16 | -36.12K | -- |
| Counsel Portfolio Services Inc. | 11.73K | Jun 30, 16 | -- | -- |
| RUSSELL FRANK CO/ | 351.58K | Mar 31, 16 | +97.00K | -- |
| Pinnacle Summer Investments, Inc. | 20.00K | Dec 31, 15 | -20.00K | -- |
| UBS AG | 2.91K | Sep 30, 14 | +2.91K | -- |