| Balter Liquid Alternatives, LLC | -- | Jun 30, 19 | -66.29K | -- |
| OppenheimerFunds, Inc. | -- | Mar 31, 19 | -220.17K | -- |
| PEAK6 Group LLC | 169.09K | Jun 30, 18 | +169.09K | -- |
| Global X Management CO LLC | -- | Jun 30, 18 | -7.26K | -- |
| Numeric Investors LLC | 113.70K | Dec 31, 17 | -309.10K | -- |
| BB&T INVESTMENT SERVICES, INC. | -- | Dec 31, 17 | -70 | -- |
| SPOT TRADING L.L.C. | 6.98K | Sep 30, 17 | +6.98K | -- |
| Acrospire Investment Management LLC | -- | Sep 30, 17 | -1.65K | -- |
| Airain ltd | 21.13K | Jun 30, 17 | +3.48K | -- |
| CAPSTONE ASSET MANAGEMENT CO | 11.98K | Jun 30, 17 | -470 | -- |
| Independent Portfolio Consultants, Inc. | 515 | Jun 30, 17 | -1.31K | -- |
| Geneva Advisors, LLC | -- | Jun 30, 17 | -35.44K | -- |
| Virtu KCG Holdings LLC | -- | Jun 30, 17 | -16.45K | -- |
| R&F Capital Advisors LP | -- | Mar 31, 17 | -12.55K | -- |
| BlackRock Fund Advisors | 3.00M | Dec 31, 16 | +328.53K | -- |
| BlackRock Institutional Trust Company, N.A. | 1.06M | Dec 31, 16 | +15.06K | -- |
| WEATHERBIE CAPITAL, LLC | 334.59K | Dec 31, 16 | -655.11K | -- |
| BlackRock Investment Management, LLC | 198.21K | Dec 31, 16 | +32.73K | -- |
| BlackRock Group LTD | 88.06K | Dec 31, 16 | +26.42K | -- |
| BlackRock Japan Co. Ltd | 33.02K | Dec 31, 16 | -- | -- |
| BLACKROCK ADVISORS LLC | 21.03K | Dec 31, 16 | +556 | -- |
| EverPoint Asset Management, LLC | 20.00K | Dec 31, 16 | +20.00K | -- |
| Emerald Acquisition Ltd. | 126.45K | Sep 30, 16 | +126.45K | -- |
| SOCIETE GENERALE | 107.64K | Jun 30, 16 | +107.64K | -- |
| RUSSELL FRANK CO/ | 57.81K | Mar 31, 16 | -81.29K | -- |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION | 2.30M | Dec 31, 15 | -- | -- |
| BRYN MAWR CAPITAL MANAGEMENT INC | 29.46K | Sep 30, 15 | +29.46K | -- |
| OFI Advisors LLC | 16.48K | Sep 30, 15 | +1.72K | -- |
| MANAGED ACCOUNT ADVISORS LLC | 134.91K | Jun 30, 15 | +89.70K | -- |
| UBS AG | 500 | Sep 30, 14 | -5.81K | -- |
| SEI TRUST CO | -- | Sep 30, 14 | -26.23K | -- |
| Strategic Capital Group LLC | -- | Jun 30, 14 | -621 | -- |
| Jane Street Holding, LLC | 12.98K | Dec 31, 13 | -21.13K | -- |
| NORTHERN TRUST CO OF CONNECTICUT | -- | Dec 31, 13 | -87.17K | -- |
| Irish Life Investment Managers Ltd. | 1.19K | Jun 30, 13 | -- | -- |
| MANULIFE INVESTMENT MANAGEMENT (US) LLC | 16.43K | Mar 31, 13 | -271 | -- |
| Manulife Investment Management (North America) Ltd | 12.91K | Mar 31, 13 | +334 | -- |