HolderBook

EROCK INC (EROC)

Institutional ownership reported to the SEC as of Q2 2026, across 1 quarters.

84
Reporting holders
$465.7M
Reported value
0.0%
Held as options
+84
Holder change

Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.

Holders

FilerValueShares Their book Held Change
Balyasny Asset Management L.P.$30.4M2,099,6190.04%newNEW
Cinctive Capital Management LP$28.2M1,947,2611.04%newNEW
Encompass Capital Advisors LLC$27.6M1,900,0000.98%newNEW
Zimmer Partners, LP$27.4M1,891,7450.63%newNEW
AMERIPRISE FINANCIAL INC$26.5M1,825,1790.01%newNEW
MASSACHUSETTS FINANCIAL SERVICES CO /MA/$25.8M1,776,2650.01%newNEW
ALLIANCEBERNSTEIN L.P.$24.7M1,702,1210.01%newNEW
CITADEL ADVISORS LLC$21.8M1,505,9970.00%newNEW
Value Aligned Research Advisors, LLC$19.5M1,345,9200.05%newNEW
Alyeska Investment Group, L.P.$18.5M1,276,3910.05%newNEW
VANGUARD PORTFOLIO MANAGEMENT LLC$16.2M1,116,3750.00%newNEW
Pictet Asset Management Holding SA$15.3M1,056,6810.01%newNEW
VANGUARD CAPITAL MANAGEMENT LLC$14.9M1,030,7280.00%newNEW
CIBC Bancorp USA Inc.$14.5M1,000,0000.02%newNEW
SEVEN GRAND MANAGERS, LLC$7.2M500,0000.29%newNEW
WELLINGTON MANAGEMENT GROUP LLP$7.2M498,5080.00%newNEW
REAVES W H & CO INC$6.3M435,0000.10%newNEW
FRANKLIN RESOURCES INC$6.3M434,9320.00%newNEW
JANE STREET GROUP, LLC$6.0M416,4310.00%newNEW
UBS Group AG$5.9M404,5660.00%newNEW
Ghisallo Capital Management LLC$5.8M400,0000.11%newNEW
SOROS FUND MANAGEMENT LLC$5.5M376,2060.07%newNEW
Burkehill Global Management, LP$5.4M375,0000.20%newNEW
ADAGE CAPITAL PARTNERS GP, L.L.C.$5.4M369,4840.01%newNEW
EAGLE GLOBAL ADVISORS LLC$5.3M365,0000.18%newNEW
BOOTHBAY FUND MANAGEMENT, LLC$4.9M339,1530.06%newNEW
Aventail Capital Group, LP$4.8M331,8050.28%newNEW
TUDOR INVESTMENT CORP ET AL$4.4M305,0020.01%newNEW
MILLENNIUM MANAGEMENT LLC$4.1M281,3640.00%newNEW
EMERALD ADVISERS, LLC$4.1M280,7340.10%newNEW
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$3.9M265,0000.01%newNEW
Freestone Grove Partners LP$3.8M264,0720.02%newNEW
Yaupon Capital Management LP$3.6M250,0000.07%newNEW
Lighthouse Investment Partners, LLC$3.6M247,4370.10%newNEW
D. E. Shaw & Co., Inc.$3.3M225,0000.00%newNEW
Hill City Capital, LP$3.2M220,0000.04%newNEW
GOLDMAN SACHS GROUP INC$3.0M210,2390.00%newNEW
BlueCrest Capital Management Ltd$2.9M200,0000.10%newNEW
LMR Partners LLP$2.7M189,5000.01%newNEW
EMERALD MUTUAL FUND ADVISERS TRUST$2.6M182,2490.09%newNEW
Woodline Partners LP$2.6M176,7210.01%newNEW
SIR Capital Management, L.P.$2.6M176,1000.29%newNEW
Schonfeld Strategic Advisors LLC$2.5M175,8320.01%newNEW
ELEMENT CAPITAL MANAGEMENT LLC$2.1M142,0150.06%newNEW
Capricorn Fund Managers Ltd$2.0M140,0000.16%newNEW
Weiss Asset Management LP$1.7M117,7000.02%newNEW
XTX Topco Ltd$1.5M106,0490.02%newNEW
RAYMOND JAMES FINANCIAL INC$1.5M102,5390.00%newNEW
DEUTSCHE BANK AG\$1.5M101,2130.00%newNEW
Brooklands Fund Management Ltd$1.4M106,3131.11%newNEW
STEADFAST CAPITAL MANAGEMENT LP$1.3M90,0000.04%newNEW
Third Point LLC$1.2M83,0300.03%newNEW
Shay Capital LLC$1.2M80,0000.07%newNEW
MORGAN STANLEY$1.1M77,9310.00%newNEW
VANGUARD FIDUCIARY TRUST CO$952.9K65,7150.00%newNEW
Hudson Bay Capital Management LP$901.3K62,1600.00%newNEW
Pentwater Capital Management LP$870.0K60,0000.01%newNEW
SummitTX Capital, L.P.$797.5K55,0000.02%newNEW
Verition Fund Management LLC$725.0K50,0000.00%newNEW
READYSTATE ASSET MANAGEMENT LP$725.0K50,0000.02%newNEW
KAYNE ANDERSON CAPITAL ADVISORS LP$710.5K49,0000.01%newNEW
FEDERATED HERMES, INC.$519.3K35,8120.00%newNEW
Engineers Gate Manager LP$514.8K35,5000.01%newNEW
Murchinson Ltd.$362.5K25,0000.05%newNEW
FMR LLC$360.3K24,8490.00%newNEW
Jefferies Financial Group Inc.$217.5K15,0000.00%newNEW
US BANCORP \DE\$192.4K13,2670.00%newNEW
LPL Financial LLC$187.3K12,9150.00%newNEW
Harbor Advisors LLC$168.2K11,6000.02%newNEW
Legal & General Group Plc$145.0K10,0000.00%newNEW
Fulcrum Asset Management LLP$128.4K9,2580.01%newNEW
Tower Research Capital LLC (TRC)$83.1K5,7280.00%newNEW
ROYAL BANK OF CANADA$59.0K4,0890.00%newNEW
Vanguard Global Advisers, LLC$39.6K2,7340.00%newNEW
PRICE T ROWE ASSOCIATES INC /MD/$33.0K2,275,9830.00%newNEW
JONES FINANCIAL COMPANIES LLLP$25.7K1,8680.00%newNEW
OSAIC HOLDINGS, INC.$17.8K1,2260.00%newNEW
WELLS FARGO & COMPANY/MN$14.1K9720.00%newNEW
IFP Advisors, Inc$7.2K5000.00%newNEW
Your Advocates Ltd., LLP$5.8K4000.00%newNEW
CITIGROUP INC$2.3K1600.00%newNEW
MRP Capital Investments, LLC$1.8K1250.00%newNEW
Caitong International Asset Management Co., Ltd$1.6K1070.00%newNEW
JPMORGAN CHASE & CO$1.4K990.00%newNEW
SBI Securities Co., Ltd.$725500.00%newNEW
Gillson Capital LP$25417,5000.01%newNEW
Virtu Financial LLC$24817,1060.01%newNEW
HRT FINANCIAL LP$23516,2690.00%newNEW
PIN OAK INVESTMENT ADVISORS INC$735,0540.03%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
2026-08-1413GMcAndrew Walter Thomas Jr. INDIVIDUALwith 3 co-filers31.9%

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
Q2 202684$465.7M32,119,54184000.0%