HolderBook

GREENIDGE GENERATION HLDGS I (GREE)

Institutional ownership reported to the SEC as of Q1 2023, across 7 quarters.

48
Reporting holders
$2.1M
Reported value
1.6%
Calls
0.2%
Puts
+7
Holder change

Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.

Holders

Download these holders as CSV

FilerValueShares Their book Held Change
Oasis Management Co Ltd.$425.7K941,8620.07%newNEW
BlackRock Inc.$387.5K857,3310.00%7q+39.2%+$109.1K
VANGUARD GROUP INC$210.1K464,7600.00%7qHELD
Vident Investment Advisory, LLC$166.3K369,6310.01%5q+136.5%+$96.0K
RENAISSANCE TECHNOLOGIES LLC$155.0K343,8280.00%7q-3.5%-$5.7K
STATE STREET CORP$131.4K290,6780.00%5q+59.5%+$49.0K
GEODE CAPITAL MANAGEMENT, LLC$87.6K193,8720.00%7q+0.8%
DEUTSCHE BANK AG\$73.4K162,4610.00%4q+2967.6%+$71.0K
SIMPLEX TRADING, LLC$70.0K155,4700.00%6q-8.3%-$6.4K
SUSQUEHANNA INTERNATIONAL GROUP, LLP$65.4K61,0670.00%7q+109.3%+$34.2K
NORTHERN TRUST CORP$51.5K113,8880.00%6q+42.5%+$15.3K
FMR LLC$45.5K100,6260.00%4q+1822.9%+$43.1K
Virtu Financial LLC$38.0K83,6140.00%newNEW
BRIDGEWAY CAPITAL MANAGEMENT, LLC$36.2K80,0000.00%7qHELD
MILLENNIUM MANAGEMENT LLC$27.0K60,0970.00%newNEW
CHARLES SCHWAB INVESTMENT MANAGEMENT INC$12.7K28,1200.00%4qHELD
Bank of New York Mellon Corp$12.4K27,3930.00%6q-23.5%-$3.8K
TWO SIGMA INVESTMENTS, LP$11.0K24,2390.00%2q-56.1%-$14.0K
Tower Research Capital LLC (TRC)$10.0K21,9380.00%5q+14.3%+$1.2K
MORGAN STANLEY$8.6K19,0070.00%7q-69.7%-$19.8K
GROUP ONE TRADING, L.P.$8.2K18,1710.00%newNEW
NEW YORK STATE COMMON RETIREMENT FUND$8.0K17,6000.00%4qHELD
Harvest Portfolios Group Inc.$7.1K15,7840.00%2q+68.3%+$2.9K
RHUMBLINE ADVISERS$7.0K14,7270.00%4q+0.6%
Invesco Ltd.$6.2K13,7650.00%6qHELD
JPMORGAN CHASE & CO$6.0K12,3790.00%6q+63.8%+$2.3K
BANK OF AMERICA CORP /DE/$5.3K11,7700.00%6q-8.5%
MILLER VALUE PARTNERS, LLC$4.5K10,0000.00%newNEW
Moss Adams Wealth Advisors LLC$4.5K10,0000.00%2qHELD
BARCLAYS PLC$3.9K8,5320.00%4q+120.9%+$2.1K
AMERICAN INTERNATIONAL GROUP, INC.$3.5K7,7990.00%4q+14.6%
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM$2.7K6,0080.00%4q+4.6%
UBS Group AG$2.3K5,0940.00%2q-52.4%-$2.5K
AMALGAMATED BANK$2.0K3,7780.00%4qHELD
WELLS FARGO & COMPANY/MN$1.3K2,9110.00%newNEW
Royal Bank of Canada$1.0K1,5550.00%newNEW
HAP Trading, LLC$1.0Koptions only0.00%newOPTIONS
Legal & General Group Plc$4861,0780.00%4qHELD
Ameritas Investment Partners, Inc.$4349600.00%4qHELD
Allspring Global Investments Holdings, LLC$3337370.00%3q-97.5%-$13.2K
CITIGROUP INC$2836250.00%2q+544.3%
Ancora Advisors, LLC$1994400.00%newNEW
ADVISOR GROUP HOLDINGS, INC.$1423150.00%newNEW
Baystate Wealth Management LLC$681500.00%newNEW
Advisory Services Network, LLC$681500.00%2qHELD
DARK FOREST CAPITAL MANAGEMENT LP$30670.00%newNEW
Larson Financial Group LLC$5100.00%2qHELD
Nelson, Van Denburg & Campbell Wealth Management Group, LLC$250.00%newNEW

Five percent filings

Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →

FiledFormFiler % of class
2026-07-2013D/AAtlas Capital GP LPwith 7 co-filers23.1%
2026-07-0813D/AAtlas Capital GP LPwith 7 co-filers23.1%

What the insiders did

Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.

Officers and directors

DateInsiderRoleSideSharesValue
2026-09-10Rogers George Ted IIIDirectorBought2,923,976$5.0M

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q1 202348$2.1M4,564,292131681.8%
Q4 202241$853.4K2,848,193911113.5%
Q3 202244$7.2M3,395,367616116.2%
Q2 202250$8.9M3,230,3072015108.0%
Q1 202244$25.5M2,560,1259171014.3%
Q4 202153$86.9M3,033,2542391143.7%
Q3 202149$224.7M1,831,063480079.2%