# GREENIDGE GENERATION HLDGS I CLASS A COM

GREENIDGE GENERATION HLDGS I CLASS A COM is a security (CUSIP 39531G308) tracked across SEC portfolio filings. 26 institutional managers reported $1.6M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $37K via N-PORT as of 2026-03-31.

## Summary

- Issuer: GREENIDGE GENERATION HLDGS I
- Class: CLASS A COM
- CUSIP: 39531G308
- Asset category: EC
- 13F holders: 26
- 13F value: $1.6M
- 13F period: 2026-06-30
- N-PORT fund positions: 2
- N-PORT value: $37K
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 26 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Graham Capital Management, L.P.](https://search.stillhousedata.com/firm/160925) | ROWAYTON, CT | $550K | 500,000 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $246K | 166,471 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $196K | 178,246 |
| STATE STREET CORP | BOSTON, MA | $142K | 79,050 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $97K | 88,300 |
| UBS Group AG | Zurich, V8 | $55K | 49,929 |
| XTX Topco Ltd | LONDON, X0 | $42K | 37,955 |
| [Centiva Capital, LP](https://search.stillhousedata.com/firm/286299) | New York, NY | $41K | 37,373 |
| [Sowell Financial Services LLC](https://search.stillhousedata.com/firm/127145) | 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 |
| BlackRock, Inc. | New York, NY | $23K | 12,825 |
| [EWA, LLC](https://search.stillhousedata.com/firm/308977) | PITTSBUGH, PA | $19K | 10,673 |
| [BRIDGEWAY CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/111441) | HOUSTON, TX | $19K | 17,000 |
| Federation des caisses Desjardins du Quebec | LEVIS, A8 | $15K | 13,201 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Ultra-Small Company Market Fund](https://search.stillhousedata.com/fund/S000004424) | Bridgeway Funds, Inc. | $37K | 3.04% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-253 | -0.00% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/39531g308.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.