Latest Period
Q1 2026
Security Snapshot
Energy Recovery, Inc. - Common Stock (ERII) Institutional Ownership
CUSIP: 29270J100
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
195
Shares (Excl. Options)
44,307,135
Price
$10.07
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- Security type / class
- Equity / Common Stock
- Symbol
- ERII on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 44,307,135
- Total 13F value
- $446,091,220
- Portfolio coverage rank
- 0%
- Share change
- +280,784
- Value change
- -$7,293,136
- Number of holders
- 195
- Shares outstanding
- 52,806,120
- SEC-reported price per share
- $8.73
- Insider filing price
- $8.73
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ERII - Energy Recovery, Inc. - Common Stock is tracked under CUSIP 29270J100.
- 195 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 190 to 195 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $590,876,726 to $446,091,220.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 195 institutions filings for Q1 2026.
Security key
29270J100
Latest holder period
Q1 2026
13F holders
195
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
ERII full holder history
Energy Recovery, Inc. SEC filings
Energy Recovery, Inc. company facts
Energy Recovery, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 29270J100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
ERII
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| AMERIPRISE FINANCIAL INC | 10% | +16% | $52,977,393 | +$7,014,895 | 5,259,816 | +15% | Ameriprise Financial, Inc. | 31 Mar 2026 |
| Amundi | 7.1% | +35% | $37,975,413 | +$9,248,394 | 3,770,357 | +32% | AMUNDI | 31 Mar 2026 |
| BROWN CAPITAL MANAGEMENT LLC | 4.8% | -5.6% | $39,406,536 | -$4,910,760 | 2,595,951 | -11% | Brown Capital Management, LLC | 31 Mar 2025 |
| FMR LLC | 0.2% | $1,420,390 | 93,570 | FMR LLC | 31 Dec 2024 |
As of 31 Mar 2026, 195 institutional investors reported holding 44,307,135 shares of Energy Recovery, Inc. - Common Stock (ERII). This represents 84% of the company’s total 52,806,120 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
66%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | 6,090,926 | -3.9% | 0% | $61,335,627 |
| AMERIPRISE FINANCIAL INC | 10% | 5,259,816 | +15% | 0.01% | $52,966,347 |
| Amundi | 7.1% | 3,740,309 | +31% | 0.01% | $37,647,713 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 2,230,270 | 0% | 0% | $22,458,819 |
| FIL Ltd | 3.8% | 1,987,919 | -0.28% | 0.02% | $20,018,344 |
| Legal & General Group Plc | 3.6% | 1,902,525 | +42% | 0% | $19,158,425 |
| STATE STREET CORP | 3.4% | 1,772,948 | +0.48% | 0% | $17,853,586 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 1,295,108 | +2.7% | 0% | $13,044,204 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.4% | 1,261,661 | 0% | 0% | $12,704,926 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 877,431 | -7.6% | 0% | $8,835,070 |
| Invesco Ltd. | 1.6% | 826,296 | +11% | 0% | $8,320,802 |
| AVENIR CORP | 1.5% | 817,755 | -16% | 1% | $8,234,798 |
| MORGAN STANLEY | 1.5% | 792,691 | -19% | 0% | $7,982,399 |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 1.3% | 673,035 | -24% | 0.04% | $6,777,462 |
| 683 Capital Management, LLC | 1% | 550,000 | 0.51% | $5,538,501 | |
| BROWN CAPITAL MANAGEMENT LLC | 1% | 538,063 | -30% | 0.77% | $5,418,294 |
| ArrowMark Colorado Holdings LLC | 0.98% | 516,000 | +37% | 0.14% | $5,196,120 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.97% | 514,102 | +48% | 0% | $5,177,007 |
| Kopion Asset Management, LLC | 0.96% | 506,965 | +52% | 4% | $5,105,138 |
| ROYCE & ASSOCIATES LP | 0.91% | 483,018 | +45% | 0.05% | $4,863,991 |
| GOLDMAN SACHS GROUP INC | 0.89% | 468,535 | -23% | 0% | $4,718,148 |
| Swiss Life Asset Management Ltd | 0.87% | 457,783 | +5.4% | 0.02% | $4,609,875 |
| NORTHERN TRUST CORP | 0.85% | 450,437 | +2.7% | 0% | $4,535,901 |
| CITADEL ADVISORS LLC | 0.85% | 449,436 | +7.4% | 0% | $4,525,820 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.82% | 431,288 | -3% | 0% | $4,343,070 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 44,307,135 | $446,091,220 | -$7,293,136 | $10.07 | 195 |
| 2025 Q4 | 43,802,737 | $590,876,726 | -$2,733,401 | $13.49 | 190 |
| 2025 Q3 | 43,928,656 | $677,472,798 | -$20,616,503 | $15.42 | 190 |
| 2025 Q2 | 45,392,087 | $580,050,458 | +$1,176,661 | $12.78 | 183 |
| 2025 Q1 | 44,813,911 | $711,784,464 | -$2,908,851 | $15.89 | 201 |
| 2024 Q4 | 45,029,854 | $661,875,967 | -$60,271,494 | $14.70 | 186 |
| 2024 Q3 | 48,354,214 | $841,407,436 | +$10,330,441 | $17.39 | 168 |
| 2024 Q2 | 47,879,802 | $636,173,806 | +$13,482,596 | $13.29 | 173 |
| 2024 Q1 | 46,623,572 | $735,282,433 | -$29,800,229 | $15.79 | 188 |
| 2023 Q4 | 47,819,800 | $900,405,572 | +$10,094,712 | $18.84 | 190 |
| 2023 Q3 | 46,063,526 | $976,118,545 | +$33,569,554 | $21.21 | 179 |
| 2023 Q2 | 44,825,656 | $1,252,724,342 | +$5,874,717 | $27.95 | 185 |
| 2023 Q1 | 44,719,990 | $1,030,501,233 | +$9,620,585 | $23.05 | 175 |
| 2022 Q4 | 44,424,299 | $910,682,310 | +$36,823,812 | $20.49 | 173 |
| 2022 Q3 | 42,802,107 | $931,071,832 | +$21,942,449 | $21.74 | 171 |
| 2022 Q2 | 41,255,480 | $801,141,267 | +$70,815,330 | $19.42 | 159 |
| 2022 Q1 | 37,475,594 | $754,678,767 | +$54,949,235 | $20.14 | 163 |
| 2021 Q4 | 34,709,286 | $745,881,660 | +$84,629,828 | $21.49 | 158 |
| 2021 Q3 | 30,630,882 | $582,921,626 | +$28,802,558 | $19.03 | 149 |
| 2021 Q2 | 29,039,326 | $661,488,345 | +$57,422,450 | $22.78 | 154 |
| 2021 Q1 | 26,598,480 | $487,803,860 | +$41,201,790 | $18.34 | 137 |
| 2020 Q4 | 24,635,141 | $336,003,589 | +$31,481,124 | $13.64 | 110 |
| 2020 Q3 | 22,480,718 | $184,346,036 | -$1,339,728 | $8.20 | 110 |
| 2020 Q2 | 22,649,357 | $172,094,059 | +$14,114,282 | $7.60 | 106 |
| 2020 Q1 | 20,815,450 | $154,871,595 | +$8,183,647 | $7.44 | 100 |