Who owns ERII?
Institutional ownership of Energy Recovery Inc. from Form 13F, Q2 2026
200 institutional managers reported holding Energy Recovery Inc. (ERII) in Form 13F filings for Q2 2026, with 43,879,921 shares worth $396M. The largest reported holder was BlackRock, Inc. Managers that filed both quarters cut a net 423,692 shares (-1.0%). 40 opened new positions and 37 sold out.
- Funds holding
- 200
- Value held
- $396M
- New / sold out
- 40 / 37
- Net shares, same filers
- -1.0%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of ERII
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| BlackRock, Inc. | $57.2M | 14.5% | 6,344,252 | Added |
| Amundi | $36.1M | 9.1% | 4,003,535 | Added |
| Vanguard Capital Management LLC | $19.7M | 5.0% | 2,183,718 | Trimmed |
| Legal & General Group Plc | $18.6M | 4.7% | 2,059,764 | Added |
| FIL Ltd | $15.5M | 3.9% | 1,715,722 | Trimmed |
| Geode Capital Management, LLC | $15.3M | 3.9% | 1,697,550 | Added |
| State Street Corp | $14.7M | 3.7% | 1,625,893 | Trimmed |
| Vanguard Portfolio Management LLC | $11.4M | 2.9% | 1,263,667 | Added |
| Morgan Stanley | $11.2M | 2.8% | 1,237,003 | Added |
| Mackenzie Financial Corp | $10.7M | 2.7% | 1,187,686 | New |
| Invesco Ltd. | $8.3M | 2.1% | 925,550 | Added |
| Dimensional Fund Advisors LP | $7.9M | 2.0% | 878,724 | Added |
| ArrowMark Colorado Holdings LLC | $7.6M | 1.9% | 847,000 | Added |
| Royce & Associates LP | $6.8M | 1.7% | 752,812 | Added |
| Avenir Corp | $6.3M | 1.6% | 693,886 | Trimmed |
| Ameriprise Financial Inc | $6.1M | 1.5% | 679,236 | Trimmed |
| Marshall Wace, LLP | $6.1M | 1.5% | 677,248 | Added |
| Kopion Asset Management, LLC | $5.8M | 1.5% | 639,545 | Added |
| Goldman Sachs Group Inc | $5.4M | 1.4% | 601,335 | Added |
| 683 Capital Management, LLC | $4.8M | 1.2% | 530,000 | Trimmed |
| Lazard Asset Management LLC | $4.5M | 1.1% | 500,061 | Added |
| Northern Trust Corp | $4.3M | 1.1% | 478,524 | Added |
| Citadel Advisors LLC | $4.3M | 1.1% | 476,236 | Added |
| Tudor Investment Corp Et Al | $4.3M | 1.1% | 471,905 | New |
| Swiss Life Asset Management Ltd | $4.2M | 1.1% | 464,661 | Added |
Share of 13F holdings is each fund's shares as a share of the 43,879,921 ERII shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Mackenzie Financial Corp New+$10.7M
- Marshall Wace, LLP Added+$5.1M
- Tudor Investment Corp Et Al New+$4.3M
- Morgan Stanley Added+$4.0M
- Lazard Asset Management LLC Added+$3.9M
- Zurcher Kantonalbank (Zurich Cantonalbank) Added+$3.7M
- Geode Capital Management, LLC Added+$3.6M
- ArrowMark Colorado Holdings LLC Added+$3.0M
- Royce & Associates LP Added+$2.4M
- Amundi Added+$2.4M
Biggest sellers in Q2 2026
- Ameriprise Financial Inc Trimmed-$41.3M
- Diamond Hill Capital Management, LLC (Investment Advisor) Sold out-$6.8M
- Arrowstreet Capital, Limited Partnership Sold out-$5.2M
- Select Equity Group, L.P. Sold out-$4.0M
- Millennium Management LLC Sold out-$3.2M
- FIL Ltd Trimmed-$2.5M
- Brown Capital Management LLC Trimmed-$2.3M
- Redmond Asset Management, LLC Sold out-$2.2M
- FMR LLC Trimmed-$2.1M
- SG Americas Securities, LLC Trimmed-$2.0M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $84.1M and sold $91.4M; 81 added and 45 trimmed.
Schedule 13D and 13G filings on ERII
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-02-17Amundi SCHEDULE 13G filed by Energy Recovery Inc.Schedule 13G
Questions about ERII ownership
- Who owns ERII stock?
- 200 institutional investment managers reported ERII positions in their Form 13F filings for Q2 2026, holding 43,879,921 shares worth $396M in total. BlackRock, Inc. reported the largest position.
- Are funds buying or selling ERII?
- In Q2 2026, 40 managers opened new ERII positions, 81 added, 45 trimmed and 37 sold out. Managers that filed in both quarters sold a net 423,692 shares.
- How current is this ERII institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to ERII by CUSIP. Options are left out. ERII news and filings · ERII insider trades · Top funds