ENERGY RECOVERY INC (ERII) Institutional Ownership Changes & 13F Activity

ENERGY RECOVERY INC (ERII). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Ameriprise Financial Inc, Amundi, Fil Ltd, Select Equity Group, L.P., and Brown Capital Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Op Asset Management LtdSell-132-100.0%0$0.00Q4 2025Sep 18, 2026
Montanaro Asset Management LtdBuy+128,160—128,160$1.73MQ4 2025Mar 10, 2026
Hsbc Holdings PlcBuy+65,056—65,056$873.83KQ4 2025Mar 06, 2026
Raymond James Financial IncBuy+101,629—101,629$1.37MQ4 2025Feb 18, 2026
Mercer Global Advisors IncBuy+38,950—38,950$525.43KQ4 2025Feb 18, 2026
Strive Financial Group ,LlcBuy+35—35$472.00Q4 2025Feb 18, 2026
Ameriprise Financial IncBuy+4,563,348—4,563,348$61.56MQ4 2025Feb 17, 2026
AmundiBuy+2,851,691—2,851,691$38.46MQ4 2025Feb 17, 2026
Fil LtdBuy+1,993,506—1,993,506$26.89MQ4 2025Feb 17, 2026
Select Equity Group, L.P.Buy+773,577—773,577$10.44MQ4 2025Feb 17, 2026
Brown Capital Management LlcBuy+764,793—764,793$10.32MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+438,397—438,397$5.91MQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+418,587—418,587$5.65MQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+385,687—385,687$5.20MQ4 2025Feb 17, 2026
Arrowmark Colorado Holdings LlcBuy+377,000—377,000$5.09MQ4 2025Feb 17, 2026
Wellington Management Group LlpBuy+300,618—300,618$4.06MQ4 2025Feb 17, 2026
Fmr LlcBuy+250,242—250,242$3.38MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+194,532—194,532$2.62MQ4 2025Feb 17, 2026
Rice Hall James & Associates, LlcBuy+121,998—121,998$1.65MQ4 2025Feb 17, 2026
State Of Wisconsin Investment BoardBuy+113,666—113,666$1.53MQ4 2025Feb 17, 2026
D. E. Shaw & Co., Inc.Buy+63,095—63,095$851.15KQ4 2025Feb 17, 2026
Alliancebernstein L.P.Buy+54,250—54,250$731.83KQ4 2025Feb 17, 2026
Price T Rowe Associates IncBuy+53,701—53,701$725.00KQ4 2025Feb 17, 2026
Bank Of America CorpBuy+53,340—53,340$719.56KQ4 2025Feb 17, 2026
Old West Investment Management, LlcBuy+49,944—49,944$673.74KQ4 2025Feb 17, 2026
California State Teachers Retirement SystemBuy+49,008—49,008$661.12KQ4 2025Feb 17, 2026
Quantinno Capital Management LpBuy+46,642—46,642$629.20KQ4 2025Feb 17, 2026
Shelton Capital ManagementBuy+46,385—46,385$625.73KQ4 2025Feb 17, 2026
Lazard Asset Management LlcBuy+43,591—43,591$588.04KQ4 2025Feb 17, 2026
Engineers Gate Manager LpBuy+38,412—38,412$518.18KQ4 2025Feb 17, 2026
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Frequently asked questions about ERII activity

  • Which institutional owners are buying ERII?

    Institutional owners buying ERII include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ERII activity?

    "Buy" means an investor increased their reported position in ERII compared to the prior reporting period. This reflects growing exposure to ENERGY RECOVERY INC (ERII) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ERII increasing?

    Institutional interest in ERII can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.