undamentalytics Newsletter

Erock, Inc.: which funds bought and sold

Institutions that bought and sold Erock shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 88 institutions that filed 13F reports for both quarters added to or opened positions in Erock, and 0 cut or closed them. Together they added a net 34.2M shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 20.3M shares; index fund managers were net buyers of 2.2M shares. 88 opened a new position and 0 sold out entirely.

Bought, Q2 2026 88 institutions, 88 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out
Net change, all compared +34.2M shares (—)
Net change, active managers +20.3M shares (—), 35 bought, 0 sold

Buyers versus sellers

institutions compared, 88
Active managers and hedge funds 35 bought · 0 sold · +20.3M
Index fund managers 3 bought · 0 sold · +2.2M
Other institutions 50 bought · 0 sold · +11.7M

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Price T Rowe Associates Inc Active manager +2.3M New position 2.3M $33M
Balyasny Asset Management L.P. Hedge fund +2.1M New position 2.1M $30.4M
Cinctive Capital Management LP Hedge fund +1.9M New position 1.9M $28.2M
Encompass Capital Advisors LLC +1.9M New position 1.9M $27.6M
Zimmer Partners, LP Hedge fund +1.9M New position 1.9M $27.4M
Ameriprise Financial Inc +1.8M New position 1.8M $26.5M
Massachusetts Financial Services Co Active manager +1.8M New position 1.8M $25.8M
Alliancebernstein L.P. Active manager +1.7M New position 1.7M $24.7M
Citadel Advisors LLC Hedge fund +1.5M New position 1.5M $21.8M
Value Aligned Research Advisors, LLC +1.3M New position 1.3M $19.5M
Alyeska Investment Group, L.P. Hedge fund +1.3M New position 1.3M $18.5M
Vanguard Portfolio Management LLC Index funds +1.1M New position 1.1M $16.2M
Pictet Asset Management Holding SA +1.1M New position 1.1M $15.3M
Vanguard Capital Management LLC Index funds +1.0M New position 1.0M $14.9M
CIBC Bancorp Usa Inc. +1.0M New position 1.0M $14.5M
Seven Grand Managers, LLC +500K New position 500K $7.3M
Wellington Management Group LLP Active manager +499K New position 499K $7.2M
Reaves W H & Co Inc +435K New position 435K $6.3M
Franklin Resources Inc Active manager +435K New position 435K $6.3M
Jane Street Group, LLC +416K New position 416K $6M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
No institution cut its holding.

New positions

largest by value
InstitutionSharesValue June 30, 2026
Price T Rowe Associates IncActive manager 2.3M $33M
Balyasny Asset Management L.P.Hedge fund 2.1M $30.4M
Cinctive Capital Management LPHedge fund 1.9M $28.2M
Encompass Capital Advisors LLC 1.9M $27.6M
Zimmer Partners, LPHedge fund 1.9M $27.4M
Ameriprise Financial Inc 1.8M $26.5M
Massachusetts Financial Services CoActive manager 1.8M $25.8M
Alliancebernstein L.P.Active manager 1.7M $24.7M
Citadel Advisors LLCHedge fund 1.5M $21.8M
Value Aligned Research Advisors, LLC 1.3M $19.5M

Sold out

largest by value
InstitutionSharesValue March 31, 2026
No institution sold its whole holding.

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
89
Ten largest holders
53.2%
of 13F-reported shares
Index fund managers
6.4%
of 13F-reported shares
Active managers and hedge funds
59.0%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 35 0 35 0 +20.3M —
Index fund managers 3 0 3 0 +2.2M —
Other institutions 50 0 50 0 +11.7M —

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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