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 $1.5M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $133K via N-PORT as of 2026-03-31.

Summary

Top institutional holders (Form 13F)

Showing 15 of 26 managers by value.

ManagerLocationValueShares
Graham Capital Management, L.P.ROWAYTON, CT$550K500,000
VANGUARD GROUP INCValley Forge, PA$246K166,471
GEODE CAPITAL MANAGEMENT, LLCBOSTON, MA$196K178,246
RENAISSANCE TECHNOLOGIES LLCNEW YORK, NY$97K88,300
STATE STREET CORPBOSTON, MA$87K79,050
UBS Group AGZurich, V8$55K49,929
XTX Topco LtdLONDON, X0$42K37,955
Centiva Capital, LPNew York, NY$41K37,373
Sowell Financial Services LLCNORTH LITTLE ROCK, AR$34K19,002
NORTHERN TRUST CORPCHICAGO, IL$33K29,806
JANE STREET GROUP, LLCNEW YORK, NY$29K26,009
EWA, LLCPITTSBUGH, PA$19K10,673
BRIDGEWAY CAPITAL MANAGEMENT, LLCHOUSTON, TX$19K17,000
Federation des caisses Desjardins du QuebecLEVIS, A8$15K13,201
BlackRock, Inc.New York, NY$14K12,825

Top fund holders (N-PORT)

FundRegistrantValue% of fund
VANGUARD EXTENDED MARKET INDEX FUNDVANGUARD INDEX FUNDS$134K0.02%
Blackstone Alternative Multi-Strategy FundBlackstone Alternative Investment Funds$-253-0.00%

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