| CHICAGO EQUITY PARTNERS LLC | 12.35K | Mar 31, 20 | -75.78K | -- |
| LADENBURG THALMANN FINANCIAL SERVICES INC. | -- | Dec 31, 19 | -320 | -- |
| Advisor Group, Inc. | -- | Dec 31, 19 | -378 | -- |
| Glacier Peak Capital LLC | 25.00K | Sep 30, 19 | +10.00K | -- |
| TEACHERS ADVISORS, LLC | 2.31M | Mar 31, 19 | +1.96M | -- |
| TIAA CREF INVESTMENT MANAGEMENT LLC | 364.30K | Mar 31, 19 | +5.46K | -- |
| OppenheimerFunds, Inc. | 98.15K | Mar 31, 19 | +15.89K | -- |
| Jump Trading, LLC | 56.40K | Mar 31, 19 | +56.40K | -- |
| NEXT Financial Holdings | 2.00K | Mar 31, 19 | +2.00K | -- |
| Diag Capital Management, LP | 634.05K | Dec 31, 18 | +634.05K | -- |
| Evanston Investments, Inc., dba Evanston Advisors | 25.00K | Dec 31, 18 | +25.00K | -- |
| City Financial Investment Co Ltd | -- | Dec 31, 18 | -227.07K | -- |
| Archer Capital Management, L.P. | -- | Dec 31, 18 | -80.60K | -- |
| ASCEND CAPITAL, LLC | -- | Sep 30, 18 | -231.86K | -- |
| PEAK6 Group LLC | -- | Jun 30, 18 | -31.40K | -- |
| FNY Partners Fund LP | 9.98K | Mar 31, 18 | -79.11K | -- |
| GLG Partners LP | 395.00K | Dec 31, 17 | +395.00K | -- |
| CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. | -- | Dec 31, 17 | -331.21K | -- |
| COASTLAND CAPITAL LLC | 199.66K | Sep 30, 17 | -200.34K | -- |
| EnTrustPermal Management LLC | 111.20K | Sep 30, 17 | +111.20K | -- |
| GAM SYSTEMATIC LLP | 12.56K | Sep 30, 17 | +12.56K | -- |
| Acrospire Investment Management LLC | -- | Sep 30, 17 | -1.75K | -- |
| Airain ltd | 77.07K | Jun 30, 17 | +44.01K | -- |
| Virtu KCG Holdings LLC | 22.55K | Jun 30, 17 | +9.33K | -- |
| CAPSTONE ASSET MANAGEMENT CO | 17.13K | Jun 30, 17 | -720 | -- |
| BLUE JAY CAPITAL MANAGEMENT, LLC | -- | Jun 30, 17 | -300.00K | -- |
| JANUS HENDERSON INVESTORS US LLC | 1.77M | Mar 31, 17 | -493.22K | -- |
| Lebenthal Asset Management, LLC | 74.88K | Mar 31, 17 | -304 | -- |
| Fiera Capital (Europe) Ltd. | 7.76K | Mar 31, 17 | -- | -- |
| Spot Trading L.L.C | 1.32K | Mar 31, 17 | -75.64K | -- |
| KALMAR INVESTMENTS INC /DE/ | -- | Mar 31, 17 | -316.80K | -- |
| BlackRock Fund Advisors | 5.68M | Dec 31, 16 | +200.05K | -- |
| BlackRock Institutional Trust Company, N.A. | 2.72M | Dec 31, 16 | +151.86K | -- |
| BlackRock Investment Management, LLC | 297.03K | Dec 31, 16 | +46.99K | -- |
| EverPoint Asset Management, LLC | 145.00K | Dec 31, 16 | +145.00K | -- |
| BlackRock Group LTD | 67.60K | Dec 31, 16 | +2.93K | -- |
| BLACKROCK ADVISORS LLC | 50.27K | Dec 31, 16 | +2.20K | -- |
| CenterStar Fund, LLC | 2.74K | Dec 31, 16 | +2.74K | -- |
| MSI Financial Services Inc | 1.61K | Dec 31, 16 | -755 | -- |
| Emerald Acquisition Ltd. | 829.82K | Sep 30, 16 | +155.35K | -- |
| Lebenthal Holdings,LLC | 106.14K | Jun 30, 16 | +13.85K | -- |
| SOCIETE GENERALE | 30.87K | Jun 30, 16 | +30.87K | -- |
| Visium Asset Management, LP | -- | Jun 30, 16 | -486.27K | -- |
| Green Owl Capital Management, LLC | -- | Jun 30, 16 | -38.81K | -- |
| Apex Capital Management | 2.00M | Mar 31, 16 | +104.35K | -- |
| RUSSELL FRANK CO/ | 539.34K | Mar 31, 16 | -293.04K | -- |
| Sandell Investment Services LLC | 59.85K | Dec 31, 15 | -58.23K | -- |
| MAZAMA CAPITAL MANAGEMENT INC | 43.36K | Dec 31, 15 | +10.46K | -- |
| Santa Fe Partners LLC | 31.12K | Dec 31, 15 | +31.12K | -- |
| Independence Capital Asset Partners, LLC | 11.15K | Dec 31, 15 | +11.15K | -- |
| Douglas C. Lane & Associates, Inc. | 6.00K | Dec 31, 15 | +6.00K | -- |
| Ada Investment Management, LP | 5.49K | Dec 31, 15 | +5.49K | -- |
| Pinnacle Summer Investments, Inc. | 2.00K | Dec 31, 15 | +2.00K | -- |
| CURIAN CAPITAL LLC | -- | Dec 31, 15 | -10.60K | -- |
| Bellevue Asset Management AG | -- | Dec 31, 15 | -112.47K | -- |
| Valentine Capital Asset Management, Inc. | -- | Dec 31, 15 | -42.85K | -- |
| BENNETT LAWRENCE MANAGEMENT L L C/NY | -- | Dec 31, 15 | -44.38K | -- |
| OFI Advisors LLC | 2.48K | Sep 30, 15 | +29 | -- |
| Index Management Solutions, LLC | 108 | Sep 30, 15 | +14 | -- |
| MANAGED ACCOUNT ADVISORS LLC | 535.45K | Jun 30, 15 | -32.30K | -- |
| 300 NORTH CAPITAL, LLC | 5.32K | Jun 30, 15 | -91.58K | -- |
| BAIRD ROBERT W & CO INC /WI/ | 418.85K | Mar 31, 15 | +418.85K | -- |
| Adamant Biomedical Investments AG | 160.00K | Dec 31, 14 | +100.00K | -- |
| Placemark Investments, Inc. | 21.16K | Dec 31, 14 | +4.85K | -- |
| NEW ENGLAND SECURITIES CORP /MA/ | 730 | Dec 31, 14 | +170 | -- |
| UBS AG | 58.82K | Sep 30, 14 | -2.34K | -- |
| Gerry Farber, LLC | 48.50K | Sep 30, 14 | -27.80K | -- |
| SEI TRUST CO | 23.05K | Sep 30, 14 | +4.83K | -- |
| Perimeter Capital Partners, LLC | 14.67K | Sep 30, 14 | -48.21K | -- |
| Tradeworx Inc. | 13.41K | Sep 30, 14 | +13.41K | -- |
| QS BATTERYMARCH FINANCIAL MANAGEMENT, INC | 229 | Sep 30, 14 | -242 | -- |
| CHARTWELL INVESTMENT PARTNERS/PA | 1.25M | Mar 31, 14 | +526.30K | -- |
| SAC Capital Advisors LP | -- | Mar 31, 14 | -28.41K | -- |
| KOPP FUNDS INC | 396.97K | Dec 31, 13 | +396.97K | -- |
| Jane Street Holding, LLC | 12.94K | Dec 31, 13 | -5.36K | -- |
| NORTHERN TRUST CO OF CONNECTICUT | -- | Dec 31, 13 | -194.16K | -- |
| Irish Life Investment Managers Ltd. | 2.38K | Jun 30, 13 | -- | -- |
| MindShare Capital Management, LLC | 68.27K | Mar 31, 13 | -2.87K | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 27.19K | Mar 31, 13 | -211 | -- |
| Manulife Investment Management (North America) Ltd | 22.63K | Mar 31, 13 | +601 | -- |
| LEHMAN BROTHERS HOLDINGS INC. PLAN TRUST | -- | Jun 30, 08 | -44.02K | -- |