GREENIDGE GENERATION HLDGS I CLASS A COM is a security (CUSIP 39531G308) tracked across SEC portfolio filings. 26 institutional managers reported $1.5M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $133K via N-PORT as of 2026-03-31.
Showing 15 of 26 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| Graham Capital Management, L.P. | ROWAYTON, CT | $550K | 500,000 |
| VANGUARD GROUP INC | Valley Forge, PA | $246K | 166,471 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $196K | 178,246 |
| RENAISSANCE TECHNOLOGIES LLC | NEW YORK, NY | $97K | 88,300 |
| STATE STREET CORP | BOSTON, MA | $87K | 79,050 |
| UBS Group AG | Zurich, V8 | $55K | 49,929 |
| XTX Topco Ltd | LONDON, X0 | $42K | 37,955 |
| Centiva Capital, LP | New York, NY | $41K | 37,373 |
| Sowell Financial Services LLC | NORTH LITTLE ROCK, AR | $34K | 19,002 |
| NORTHERN TRUST CORP | CHICAGO, IL | $33K | 29,806 |
| JANE STREET GROUP, LLC | NEW YORK, NY | $29K | 26,009 |
| EWA, LLC | PITTSBUGH, PA | $19K | 10,673 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | HOUSTON, TX | $19K | 17,000 |
| Federation des caisses Desjardins du Quebec | LEVIS, A8 | $15K | 13,201 |
| BlackRock, Inc. | New York, NY | $14K | 12,825 |
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $134K | 0.02% |
| Blackstone Alternative Multi-Strategy Fund | Blackstone Alternative Investment Funds | $-253 | -0.00% |