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Energy Recovery, Inc.

ERII
Exchange
Nasdaq
Industry
Special Industry Machinery, NEC
SEC CIK
0001421517

In the last 90 days, Energy Recovery, Inc. insiders filed 0 open-market purchases and 2 sales; 199 institutions reported holding it in 13F filings for Q2 2026, worth $395.6M in total; no superinvestor holds it.

13F holders, Q4 2025

Institutional positions in Energy Recovery, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
192
+1 vs. Q3 2025
Shares held
43.8M
−108.9K (−0.2%) vs. Q3 2025
Total value
$590.9M
−$86.3M (−12.7%) vs. Q3 2025
New holders
25
59 more added
Sold out
24
80 more reduced

1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ERII on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 192 institutions
Q1 2021: 143 institutionsQ2 2021: 158 institutionsQ3 2021: 154 institutionsQ4 2021: 162 institutionsQ1 2022: 168 institutionsQ2 2022: 165 institutionsQ3 2022: 177 institutionsQ4 2022: 174 institutionsQ1 2023: 175 institutionsQ2 2023: 186 institutionsQ3 2023: 182 institutionsQ4 2023: 192 institutionsQ1 2024: 192 institutionsQ2 2024: 174 institutionsQ3 2024: 171 institutionsQ4 2024: 189 institutionsQ1 2025: 204 institutionsQ2 2025: 186 institutionsQ3 2025: 192 institutionsQ4 2025: 192 institutionsQ1 2026: 197 institutionsQ2 2026: 199 institutions
Value heldQ4 2025: $590.9M
Q1 2021: $487.9MQ2 2021: $661.5MQ3 2021: $582.9MQ4 2021: $745.9MQ1 2022: $754.7MQ2 2022: $801.2MQ3 2022: $930.6MQ4 2022: $903.1MQ1 2023: $1.02BQ2 2023: $1.25BQ3 2023: $976.5MQ4 2023: $900.4MQ1 2024: $738.1MQ2 2024: $636.2MQ3 2024: $841.4MQ4 2024: $661.9MQ1 2025: $712.7MQ2 2025: $580.1MQ3 2025: $677.5MQ4 2025: $590.9MQ1 2026: $446.1MQ2 2026: $395.6M
Institutions holding ERII and their total value by quarter
QuarterHoldersValue
Q2 2026199$395.6M
Q1 2026197$446.1M
Q4 2025192$590.9M
Q3 2025192$677.5M
Q2 2025186$580.1M
Q1 2025204$712.7M
Q4 2024189$661.9M
Q3 2024171$841.4M
Q2 2024174$636.2M
Q1 2024192$738.1M
Q4 2023192$900.4M
Q3 2023182$976.5M
Q2 2023186$1.25B
Q1 2023175$1.02B
Q4 2022174$903.1M
Q3 2022177$930.6M
Q2 2022165$801.2M
Q1 2022168$754.7M
Q4 2021162$745.9M
Q3 2021154$582.9M
Q2 2021158$661.5M
Q1 2021143$487.9M

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Energy Recovery, Inc.; share changes are against Q3 2025.

Institutions holding ERII in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
HighTower Advisors, LLC37,142$501.0K0.00%−80.0%Reduced
Franklin Resources Inc37,317$503.4K0.00%+46+0.1%Added
Mirae Asset Global ETFs Holdings Ltd.37,778$509.6K0.00%+532+1.4%Added
DnB Asset Management AS38,196$515.3K0.00%00.0%Unchanged
Engineers Gate Manager LP38,412$518.2K0.01%−39,595−50.8%Reduced
Mercer Global Advisors Inc38,950$525.4K0.00%+13,463+52.8%Added
Teacher Retirement System of Texas39,182$528.6K0.00%−6,254−13.8%Reduced
Voya Investment Management LLC39,767$536.5K0.00%+29,682+294.3%Added
Verition Fund Management LLC39,786$536.7K0.00%−747−1.8%Reduced
Acadian Asset Management LLC40,787$548.0K0.00%+37,505+1,142.7%Added
Mission Wealth Management, LP40,787$550.2K0.01%−3,713−8.3%Reduced
Pathstone Holdings, LLC41,191$555.7K0.00%+30,338+279.5%Added
Lazard Asset Management LLC43,591$588.0K0.00%−102,356−70.1%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH45,687$616.0K0.00%00.0%Unchanged
Shelton Capital Management46,385$625.7K0.01%00.0%Unchanged
Quantinno Capital Management LP46,642$629.2K0.00%+46,642New
California State Teachers Retirement System49,008$661.1K0.00%−4,070−7.7%Reduced
Old West Investment Management, LLC49,944$673.7K0.12%+6,346+14.6%Added
American Century Companies Inc51,288$691.9K0.00%−11,504−18.3%Reduced
Bank of America Corp53,340$719.6K0.00%−22,298−29.5%Reduced
Price T Rowe Associates Inc53,701$725.0K0.00%+5,798+12.1%Added
Alliancebernstein L.P.54,250$731.8K0.00%00.0%Unchanged
Cary Street Partners Financial LLC54,749$738.6K0.02%+1,977+3.7%Added
Principal Financial Group Inc63,038$850.4K0.00%+19,157+43.7%Added
D. E. Shaw & Co., Inc.63,095$851.2K0.00%−283,706−81.8%Reduced
HSBC Holdings PLC65,056$873.8K0.00%+33,552+106.5%Added
Wells Fargo & Company68,500$924.1K0.00%+19,148+38.8%Added
Rhumbline Advisers72,123$972.9K0.00%−5,844−7.5%Reduced
Gabelli Funds LLC74,000$998.3K0.01%00.0%Unchanged
Campbell & CO Investment Adviser LLC81,604$1.10M0.05%+32,851+67.4%Added
KBC Group NV84,488$1.14M0.00%−1,144,327−93.1%Reduced
Barclays PLC97,060$1.31M0.00%+6,292+6.9%Added
Raymond James Financial Inc101,629$1.37M0.00%−194,724−65.7%Reduced
UBS Group AG101,810$1.37M0.00%−144,045−58.6%Reduced
Renaissance Technologies LLC102,985$1.39M0.00%+47,385+85.2%Added
Swiss National Bank105,000$1.42M0.00%00.0%Unchanged
Gsa Capital Partners LLP109,307$1.48M0.13%+68,431+167.4%Added
Marshall Wace, LLP109,390$1.48M0.00%−129,999−54.3%Reduced
Isthmus Partners, LLC111,054$1.50M0.17%+111,054New
Jane Street Group, LLC111,673$1.51M0.00%−42,436−27.5%Reduced
Nordea Investment Management AB113,694$1.52M0.00%−20,222−15.1%Reduced
State of Wisconsin Investment Board113,666$1.53M0.00%−22,630−16.6%Reduced
Y-Intercept (Hong Kong) Ltd113,863$1.54M0.03%+78,031+217.8%Added
BNP Paribas Arbitrage, SA116,077$1.57M0.00%−119,236−50.7%Reduced
Candriam Luxembourg S.C.A.119,714$1.62M0.01%−43,443−26.6%Reduced
Rice Hall James & Associates, LLC121,998$1.65M0.09%−27,274−18.3%Reduced
Jupiter Asset Management Ltd122,129$1.65M0.01%−40,334−24.8%Reduced
Montanaro Asset Management Ltd128,160$1.73M0.48%−77,400−37.7%Reduced
Conestoga Capital Advisors, LLC133,725$1.80M0.03%+3,355+2.6%Added
Essex Investment Management Co LLC135,100$1.82M0.28%−2,786−2.0%Reduced
Bank of New York Mellon Corp154,768$2.09M0.00%−3,947−2.5%Reduced
UBS Asset Management Americas Inc159,654$2.15M0.00%−9,011−5.3%Reduced
SG Americas Securities, LLC162,116$2.19M0.00%+303+0.2%Added
Nuveen, LLC164,658$2.22M0.00%−7,199−4.2%Reduced
Deutsche Bank AG171,306$2.31M0.00%−57,611−25.2%Reduced
Millennium Management LLC194,532$2.62M0.00%+66,457+51.9%Added
Assenagon Asset Management S.A.220,116$2.97M0.00%+7,575+3.6%Added
Redmond Asset Management, LLC226,335$3.05M0.78%−3,563−1.5%Reduced
FMR LLC250,242$3.38M0.00%+42,741+20.6%Added
Falcon Edge Capital, LP265,121$3.58M0.44%−262,750−49.8%Reduced
Raiffeisen Bank International AG300,000$4.04M0.05%+10,000+3.4%Added
Wellington Management Group LLP300,618$4.06M0.00%−1,907−0.6%Reduced
Duff & Phelps Investment Management Co301,487$4.07M0.05%−6,519−2.1%Reduced
Royce & Associates LP332,247$4.48M0.05%+14,602+4.6%Added
Kopion Asset Management, LLC334,469$4.51M3.23%+16,182+5.1%Added
Arrowstreet Capital, Limited Partnership348,187$4.70M0.00%+124,342+55.5%Added
ArrowMark Colorado Holdings LLC377,000$5.09M0.11%+377,000New
Pinnacle Associates Ltd380,230$5.13M0.07%−19,106−4.8%Reduced
Qube Research & Technologies Ltd385,687$5.20M0.01%−113,183−22.7%Reduced
KLP Kapitalforvaltning AS387,711$5.23M0.02%+24,300+6.7%Added
Citadel Advisors LLC418,587$5.65M0.00%+86,767+26.1%Added
Jacobs Levy Equity Management, Inc426,733$5.76M0.02%+71,438+20.1%Added
Swiss Life Asset Management Ltd434,131$5.86M0.03%00.0%Unchanged
Northern Trust Corp438,397$5.91M0.00%−49,339−10.1%Reduced
Charles Schwab Investment Management Inc444,590$6.00M0.00%−4,684−1.0%Reduced
Goldman Sachs Group Inc607,176$8.19M0.00%+52,843+9.5%Added
ACK Asset Management LLC677,251$9.14M1.15%+677,251New
Invesco Ltd.746,036$10.1M0.00%+101,972+15.8%Added
Brown Capital Management LLC764,793$10.3M0.85%−838,189−52.3%Reduced
Select Equity Group, L.P.773,577$10.4M0.05%+22,535+3.0%Added
Diamond Hill Capital Management Inc888,358$12.0M0.06%−6,569−0.7%Reduced
Dimensional Fund Advisors LP949,489$12.8M0.00%+24,392+2.6%Added
Avenir Corp969,580$13.1M1.42%−56,236−5.5%Reduced
Morgan Stanley973,294$13.1M0.00%+42,435+4.6%Added
Geode Capital Management, LLC1,260,894$17.0M0.00%−30,849−2.4%Reduced
Legal & General Group Plc1,343,847$18.1M0.00%+36,109+2.8%Added
State Street Corp1,764,522$23.8M0.00%+325,280+22.6%Added
FIL Ltd1,993,506$26.9M0.02%−47,390−2.3%Reduced
Amundi2,851,691$38.5M0.01%+2,178,560+323.6%Added
Vanguard Group Inc3,852,438$52.0M0.00%+89,696+2.4%Added
Ameriprise Financial Inc4,563,348$61.6M0.01%−402,948−8.1%Reduced
BlackRock, Inc.6,337,391$85.5M0.00%+561,008+9.7%Added
Silvercrest Asset Management Group LLC0$00.00%−480,858−100.0%Sold out
HRT Financial LP0$00.00%−177,801−100.0%Sold out
Mackenzie Financial Corp0$00.00%−117,228−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−110,704−100.0%Sold out
Trexquant Investment LP0$00.00%−109,149−100.0%Sold out
NJ State Employees Deferred Compensation Plan0$00.00%−59,000−100.0%Sold out
Davy Global Fund Management Ltd0$00.00%−40,109−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−35,482−100.0%Sold out