| FNY Partners Fund LP | 3.00K | Mar 31, 18 | -- | -- |
| Hutchin Hill Capital, LP | -- | Dec 31, 17 | -121.10K | -- |
| Virtu KCG Holdings LLC | 47.86K | Jun 30, 17 | +47.86K | -- |
| CAPSTONE ASSET MANAGEMENT CO | 25.52K | Jun 30, 17 | -100 | -- |
| R&F Capital Advisors LP | 16.74K | Mar 31, 17 | +16.74K | -- |
| Kernodle & Katon Asset Management Group, LLC | 4.85K | Mar 31, 17 | -- | -- |
| BlackRock Fund Advisors | 2.93M | Dec 31, 16 | +354.26K | -- |
| BlackRock Institutional Trust Company, N.A. | 1.20M | Dec 31, 16 | +329.79K | -- |
| BLACKROCK ADVISORS LLC | 391.31K | Dec 31, 16 | +1.14K | -- |
| BlackRock Investment Management, LLC | 197.65K | Dec 31, 16 | +27.33K | -- |
| BlackRock Group LTD | 77.14K | Dec 31, 16 | +25.21K | -- |
| RUSSELL FRANK CO/ | -- | Mar 31, 16 | -6.98K | -- |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION | 2.23M | Dec 31, 15 | -- | -- |
| OFI Advisors LLC | 81.58K | Sep 30, 15 | +23.89K | -- |
| Platte River Capital LLC | -- | Sep 30, 15 | -10.50K | -- |
| MANAGED ACCOUNT ADVISORS LLC | 33.79K | Jun 30, 15 | +33.79K | -- |
| EMPIRICAL CAPITAL PARTNERS LP | 618.26K | Dec 31, 14 | +618.26K | -- |
| UBS AG | 8.59K | Sep 30, 14 | +810 | -- |
| SAC Capital Advisors LP | 31.08K | Mar 31, 14 | +31.08K | -- |
| Irish Life Investment Managers Ltd. | 2.51K | Jun 30, 13 | -- | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 17.27K | Mar 31, 13 | -446 | -- |
| Manulife Investment Management (North America) Ltd | 10.83K | Mar 31, 13 | +444 | -- |
| LEHMAN BROTHERS HOLDINGS INC. PLAN TRUST | 16.45K | Jun 30, 08 | -32.77K | -- |
| RBC CMA LLC | 10.22K | Jun 30, 06 | -3.92K | -- |
| Columbia Threadneedle Management Ltd | 758.33K | Sep 30, 04 | +758.33K | -- |
| RBC Global Asset Management (U.S.) | -- | Mar 31, 04 | -547.70K | -- |
| FIG LLC | 15.82K | Dec 31, 03 | +15.82K | -- |