Stock Ownership/ERII

ENERGY RECOVERY INC (ERII): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ERII · Industrials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
14
13F filers
Aggregate Value
$33.8M
Across holders
Last Price
$7.80
2026-08-24
Sector
Industrials
GICS
Quarterly fund activity13 increased0 reduced5 exited
Full exits: RENAISSANCE TECHNOLOGIES LLC, CAXTON ASSOCIATES LLP, MILLENNIUM MANAGEMENT LLC, Select Equity Group, L.P., ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Institutional Holders of ERII
↗
14 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ArrowMark Colorado Holdings LLC
CIK 0001483859
Hedge Fund847K$7.6M22.6%0.3%Added+$3.0MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund677K$6.1M18.1%0.0%Added+$5.6MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund476K$4.3M12.7%0.0%Added+$1.4MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund472K$4.3M12.6%0.0%Added—Q2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund263K$2.4M7.0%0.0%Added+$2.3MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund233K$2.1M6.2%0.0%Added+$1.3MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund219K$2.0M5.8%0.0%Added+$1.7MQ2 2026
JUPITER ASSET MANAGEMENT LTD
CIK 0001215838
Hedge Fund165K$1.5M4.4%0.0%Added+$390KQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund125K$1.1M3.3%0.0%Added+$751KQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund97K$878K2.6%0.0%Added+$782KQ2 2026
ArrowMark Colorado Holdings LLCAdded
Hedge Fund
$7.6M· 22.6% of total· 0.3% port· 847K sh· +$3.0M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$6.1M· 18.1% of total· 0.0% port· 677K sh· +$5.6M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$4.3M· 12.7% of total· 0.0% port· 476K sh· +$1.4M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$4.3M· 12.6% of total· 0.0% port· 472K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$2.4M· 7.0% of total· 0.0% port· 263K sh· +$2.3M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$2.1M· 6.2% of total· 0.0% port· 233K sh· +$1.3M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$2.0M· 5.8% of total· 0.0% port· 219K sh· +$1.7M QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$1.5M· 4.4% of total· 0.0% port· 165K sh· +$390K QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$1.1M· 3.3% of total· 0.0% port· 125K sh· +$751K QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$878K· 2.6% of total· 0.0% port· 97K sh· +$782K QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$747K· 2.2% of total· 0.0% port· 83K sh· — QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$499K· 1.5% of total· 0.0% port· 55K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$283K· 0.8% of total· 0.0% port· 31K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Unchanged
Hedge Fund
$9K· 0.0% of total· 0.0% port· 1K sh· +$0 QoQ· Q2 2026
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