ERII · Energy Recovery, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 200 13F filersWho Holds ERII
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 199 filers, like-for-like change -1.0%; actively managed books -8.4%; index-like books +7.3%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 37.3% | 96 | +5.8% |
| Exempt adviser | 1.9% | 5 | +580.3% |
| Adviser | 4.8% | 4 | -66.6% |
| Bank | 6.9% | 16 | +13.1% |
| Insurer | 0.4% | 3 | +46.0% |
| Broker-dealer | 0.0% | 1 | +440.3% |
| Benefit plan | 0.2% | 2 | -25.2% |
| Non-US | 6.7% | 10 | -0.8% |
| Holding company | 28.1% | 8 | +8.1% |
| Unknown | 13.7% | 54 | +17.1% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 51.4% | 29 | +7.3% |
| Systematic-like | 6.1% | 18 | +43.9% |
| Concentrated | 3.9% | 19 | +7.5% |
| Diversified active | 38.7% | 133 | -14.5% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 61.3% | 111 | -9.5% |
| Medium turnover | 20.5% | 41 | +10.7% |
| High turnover | 8.9% | 34 | +63.3% |
| Unknown | 9.3% | 13 | +0.2% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 10.9% | 28 | +2.7% |
| Medium horizon | 18.7% | 19 | +6.2% |
| Long horizon | 64.6% | 138 | -7.8% |
| Unknown | 5.8% | 14 | +114.2% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 5.4% | 33 | -9.1% |
| $1B to $10B | 8.4% | 47 | +10.6% |
| $10B to $100B | 14.4% | 57 | +53.4% |
| $100B or more | 71.9% | 62 | -8.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 4.3% | 42 | +4.3% |
| Pooled investment vehicles | 9.9% | 22 | +24.0% |
| Registered funds and BDCs | 17.7% | 13 | -4.3% |
| Pension and profit sharing plans | 0.0% | 1 | 0.0% |
| Insurance companies | 0.2% | 3 | +3.9% |
| Governments and sovereign funds | 0.1% | 1 | -68.0% |
| Other investment advisers | 0.0% | 2 | +13015.7% |
| Diversified | 5.1% | 12 | +25.6% |
| Other | 0.0% | 0 | — |
| Unknown | 62.7% | 103 | -4.6% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 12.9% | 31 | +5.5% |
| Private equity funds | 0.2% | 6 | -6.2% |
| Venture capital funds | 0.0% | 1 | +5900.0% |
| Real estate funds | 0.0% | 2 | +2027.8% |
| Securitized asset funds | 0.4% | 1 | +2.0% |
| Other private funds | 7.9% | 13 | +74.1% |
| Mixed private funds | 0.1% | 1 | +122.8% |
| Private funds, type not stated | 0.1% | 4 | -8.1% |
| No private funds | 17.6% | 42 | -2.3% |
| Unknown | 60.7% | 98 | -7.2% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 70.8% | 157 | -8.0% |
| Outside the US | 29.2% | 42 | +21.3% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
199 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 40.1% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shareholder Targets
13F filers that own its peers but not ERII, quarter ended Jun 30, 2026Found through its holder-overlap peers: MOH, TSN, AMZN, GOOGL, XOM, AAPL. 6,834 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $152,727,445,266 6 held | GOOGL, AAPL, AMZN |
| 2 | Berkshire Hathaway Inc Insurer, Concentrated | $103,714,385,303 2 held | AAPL, GOOGL |
| 3 | Capital Research Global Investors Adviser, Diversified active | $90,094,297,438 5 held | GOOGL, AMZN, AAPL |
| 4 | Capital World Investors Adviser, Diversified active | $72,933,415,789 5 held | GOOGL, AMZN, AAPL |
| 5 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $55,123,133,434 6 held | GOOGL, AAPL, AMZN |
| 6 | Capital International Investors Adviser, Diversified active | $47,383,018,647 4 held | GOOGL, AAPL, AMZN |
| 7 | Fisher Asset Management, LLC Adviser, Diversified active | $44,198,743,862 4 held | AAPL, GOOGL, AMZN |
| 8 | JENNISON ASSOCIATES LLC Registered adviser, Diversified active | $30,057,337,857 4 held | GOOGL, AAPL, AMZN |
| 9 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active | $29,547,398,400 6 held | GOOGL, AAPL, AMZN |
| 10 | Mitsubishi UFJ Asset Management Co., Ltd. Unknown, Index-like | $29,139,342,225 6 held | AAPL, GOOGL, AMZN |
Fund Ownership of ERII by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 16.92% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.74% | 2,418,884 |
| Index ETFs | 12.18% | 6,217,362 |
| Active ETFs | 0.95% | 485,572 |
| Active funds | 9.17% | 4,678,943 |
| Unclassified | 0.04% | 18,790 |
| All registered funds | 27.07% | 13,819,551 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $57,225,146 | 14.33% | 6,344,252 | Shares | 2026-08-07 | |
| Mega Amundi Holding company | $36,111,885 | 9.04% | 4,003,535 | Shares | 2026-08-11 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $19,697,136 | 4.93% | 2,183,718 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $18,579,070 | 4.65% | 2,059,764 | Shares | 2026-08-14 | |
| Mega FIL Ltd Non-US | $15,475,812 | 3.87% | 1,715,722 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $15,311,900 | 3.83% | 1,697,550 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $14,665,554 | 3.67% | 1,625,893 | Shares | 2026-09-22 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $11,398,276 | 2.85% | 1,263,667 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $11,157,765 | 2.79% | 1,237,003 | Shares | 2026-08-13 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $10,712,927 | 2.68% | 1,187,686 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $8,348,459 | 2.09% | 925,550 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $7,926,089 | 1.98% | 878,724 | Shares | 2026-08-11 | |
| Mid ArrowMark Colorado Holdings LLC Registered adviser | $7,639,940 | 1.91% | 847,000 | Shares | 2026-08-13 | |
| Small Kopion Asset Management, LLC Registered adviser | $6,790,947 | 1.70% | 1,018,133 | Shares | 2026-10-09 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $6,790,364 | 1.70% | 752,812 | Shares | 2026-08-14 | |
| Small AVENIR CORP Registered adviser | $6,258,851 | 1.57% | 693,886 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $6,126,708 | 1.53% | 679,236 | Shares | 2026-08-14 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $6,108,775 | 1.53% | 677,248 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $5,424,041 | 1.36% | 601,335 | Shares | 2026-08-14 | |
| Mid 683 Capital Management, LLC Registered adviser | $4,780,600 | 1.20% | 530,000 | Shares | 2026-08-14 | |
| Large LAZARD ASSET MANAGEMENT LLC Adviser | $4,510,550 | 1.13% | 500,061 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $4,316,284 | 1.08% | 478,524 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $4,295,648 | 1.08% | 476,236 | Shares | 2026-09-02 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $4,256,583 | 1.07% | 471,905 | Shares | 2026-08-14 | |
| Large Swiss Life Asset Management Ltd | $4,191,241 | 1.05% | 464,661 | Shares | 2026-07-29 | |
| Mid Raiffeisen Bank International AG | $4,149,200 | 1.04% | 460,000 | Shares | 2026-08-03 | |
| Large Zurcher Kantonalbank (Zurich Cantonalbank) Non-US | $3,967,149 | 0.99% | 439,817 | Shares | 2026-08-12 | |
| Mid CenterBook Partners LP Registered adviser | $3,792,973 | 0.95% | 420,507 | Shares | 2026-08-11 | |
| Large KLP KAPITALFORVALTNING AS | $3,610,805 | 0.90% | 400,311 | Shares | 2026-08-12 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $3,575,717 | 0.90% | 396,421 | Shares | 2026-08-13 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC Registered adviser | $3,416,766 | 0.86% | 378,799 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $3,313,938 | 0.83% | 367,399 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $3,311,404 | 0.83% | 367,118 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $2,572,645 | 0.64% | 285,216 | Shares | 2026-08-12 | |
| Small BROWN CAPITAL MANAGEMENT LLC Registered adviser | $2,551,451 | 0.64% | 282,866 | Shares | 2026-07-27 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $2,370,852 | 0.59% | 262,844 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $2,100,117 | 0.53% | 232,829 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $1,972,737 | 0.49% | 218,707 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,749,149 | 0.44% | 193,919 | Shares | 2026-08-14 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $1,713,800 | 0.43% | 190,000 | Put | 2026-08-14 | |
| Mid PINNACLE ASSOCIATES LTD Registered adviser | $1,679,772 | 0.42% | 251,840 | Shares | 2026-10-20 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,636,228 | 0.41% | 181,400 | Put | 2026-08-14 | |
| Mega Nuveen, LLC | $1,566,890 | 0.39% | 173,713 | Shares | 2026-08-11 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $1,524,421 | 0.38% | 169,005 | Shares | 2026-08-13 | |
| Large JUPITER ASSET MANAGEMENT LTD Registered adviser | $1,491,917 | 0.37% | 165,401 | Shares | 2026-08-10 | |
| Mega Bank of New York Mellon Corp Bank | $1,398,929 | 0.35% | 155,092 | Shares | 2026-08-06 | |
| Large Jump Financial, LLC | $1,372,185 | 0.34% | 152,127 | Shares | 2026-08-13 | |
| Small Polymer Capital Management (US) LLC | $1,305,239 | 0.33% | 144,705 | Shares | 2026-08-14 | |
| Mega SG Americas Securities, LLC Non-US | $1,283,410 | 0.32% | 142,285 | Shares | 2026-08-07 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,217,700 | 0.30% | 135,000 | Put | 2026-09-02 | |
| Large Squarepoint Ops LLC Registered adviser | $1,128,762 | 0.28% | 125,140 | Shares | 2026-08-14 | |
| Mega NORDEA INVESTMENT MANAGEMENT AB Non-US | $1,124,711 | 0.28% | 124,691 | Shares | 2026-08-05 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC Registered adviser | $1,124,153 | 0.28% | 124,629 | Shares | 2026-08-07 | |
| Mid ISTHMUS PARTNERS, LLC | $1,111,815 | 0.28% | 166,689 | Shares | 2026-10-21 | |
| Mega JANE STREET GROUP, LLC | $1,109,460 | 0.28% | 123,000 | Put | 2026-08-14 | |
| Mid GSA CAPITAL PARTNERS LLP Registered adviser | $1,078,124 | 0.27% | 119,526 | Shares | 2026-08-06 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $1,049,224 | 0.26% | 116,322 | Shares | 2026-08-14 | |
| Small EntryPoint Capital, LLC Registered adviser | $1,047,231 | 0.26% | 116,101 | Shares | 2026-08-13 | |
| Large Pacer Advisors, Inc. | $1,045,923 | 0.26% | 115,956 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $998,865 | 0.25% | 110,739 | Shares | 2026-08-13 | |
| Mega Swiss National Bank | $947,100 | 0.24% | 105,000 | Shares | 2026-08-11 | |
| Large Balyasny Asset Management L.P. Registered adviser | $878,421 | 0.22% | 97,386 | Shares | 2026-08-14 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $866,568 | 0.22% | 96,072 | Shares | 2026-08-12 | |
| Large Quantinno Capital Management LP Registered adviser | $823,580 | 0.21% | 91,306 | Shares | 2026-08-13 | |
| Mid CARY STREET PARTNERS FINANCIAL LLC | $807,551 | 0.20% | 89,529 | Shares | 2026-07-17 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $807,443 | 0.20% | 89,517 | Shares | 2026-08-14 | |
| Small CoreCommodity Management, LLC Registered adviser | $789,195 | 0.20% | 87,494 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $747,027 | 0.19% | 82,819 | Shares | 2026-08-14 | |
| Mega HSBC HOLDINGS PLC | $710,243 | 0.18% | 78,741 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $707,168 | 0.18% | 78,400 | Call | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $703,584 | 0.18% | 78,003 | Shares | 2026-08-06 | |
| Small Old West Investment Management, LLC Registered adviser | $693,908 | 0.17% | 76,930 | Shares | 2026-08-06 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $669,436 | 0.17% | 74,217 | Shares | 2026-08-04 | |
| Large GABELLI FUNDS LLC Registered adviser | $667,480 | 0.17% | 74,000 | Shares | 2026-08-12 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $650,188 | 0.16% | 72,083 | Shares | 2026-08-24 | |
| Mega DEUTSCHE BANK AG\ Non-US | $618,094 | 0.15% | 68,525 | Shares | 2026-08-07 | |
| Large IMC-Chicago, LLC | $602,707 | 0.15% | 66,819 | Shares | 2026-08-06 | |
| Mega SEI INVESTMENTS CO Holding company | $583,079 | 0.15% | 64,643 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $581,014 | 0.15% | 64,414 | Shares | 2026-08-12 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $528,391 | 0.13% | 58,580 | Shares | 2026-08-13 | |
| Large NewEdge Advisors, LLC Registered adviser | $518,253 | 0.13% | 57,456 | Shares | 2026-08-12 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $505,354 | 0.13% | 56,026 | Shares | 2026-08-14 | |
| Small MILFAM LLC | $500,250 | 0.13% | 75,000 | Shares | 2026-10-13 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $499,446 | 0.13% | 55,371 | Shares | 2026-08-14 | |
| Large CREDIT AGRICOLE S A | $496,100 | 0.12% | 55,000 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $481,217 | 0.12% | 53,350 | Shares | 2026-08-14 | |
| Large AVIVA PLC Insurer | $463,952 | 0.12% | 51,436 | Shares | 2026-08-13 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $462,590 | 0.12% | 51,285 | Shares | 2026-08-19 | |
| Mid Numerai GP LLC Registered adviser | $460,651 | 0.12% | 51,070 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $437,659 | 0.11% | 48,521 | Shares | 2026-08-12 | |
| Mega BARCLAYS PLC Bank | $411,707 | 0.10% | 45,644 | Shares | 2026-08-14 | |
| Large Pathstone Holdings, LLC | $375,340 | 0.09% | 41,612 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $375,096 | 0.09% | 41,585 | Shares | 2026-08-14 | |
| Small Diametric Capital, LP | $370,523 | 0.09% | 41,078 | Shares | 2026-08-14 | |
| Large KBC Group NV | $366,343 | 0.09% | 54,924 | Shares | 2026-10-22 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $356,461 | 0.09% | 39,519 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $349,976 | 0.09% | 38,800 | Call | 2026-08-14 | |
| Mega HighTower Advisors, LLC Registered adviser | $346,674 | 0.09% | 38,434 | Shares | 2026-08-05 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $326,749 | 0.08% | 36,225 | Shares | 2026-08-13 | |
| Large Corient Private Wealth LLC Registered adviser | $301,845 | 0.08% | 33,464 | Shares | 2026-08-27 |
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