Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in ERII held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.3M | $57.2M | +4.2% | 12.308% | 0.00% |
| 2 | Amundi | 4.0M | $36.1M | +7.0% | 7.767% | 0.01% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2.2M | $19.7M | -2.1% | 4.237% | 0.00% |
| 4 | Legal & General Group Plc | 2.1M | $18.6M | +8.3% | 3.996% | 0.00% |
| 5 | FIL Ltd | 1.7M | $15.5M | -13.7% | 3.329% | 0.01% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $15.3M | +31.1% | 3.293% | 0.00% |
| 7 | STATE STREET CORP | 1.6M | $14.7M | -8.3% | 3.154% | 0.00% |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | $11.4M | +0.2% | 2.452% | 0.00% |
| 9 | MORGAN STANLEY | 1.2M | $11.2M | +56.0% | 2.400% | 0.00% |
| 10 | MACKENZIE FINANCIAL CORP | 1.2M | $10.7M | β | 2.304% | 0.01% |
| 11 | Invesco Ltd. | 926K | $8.3M | +12.0% | 1.796% | 0.00% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 879K | $7.9M | +0.1% | 1.705% | 0.00% |
| 13 | ArrowMark Colorado Holdings LLC | 847K | $7.6M | +64.1% | 1.643% | 0.32% |
| 14 | ROYCE & ASSOCIATES LP | 753K | $6.8M | +55.9% | 1.460% | 0.05% |
| 15 | AVENIR CORP | 694K | $6.3M | -15.2% | 1.346% | 0.76% |
| 16 | AMERIPRISE FINANCIAL INC | 679K | $6.1M | -87.1% | 1.318% | 0.00% |
| 17 | MARSHALL WACE, LLP | 677K | $6.1M | +537.1% | 1.314% | 0.00% |
| 18 | TUDOR INVESTMENT CORP ET AL | 662K | $6.0M | β | 1.284% | 0.01% |
| 19 | Kopion Asset Management, LLC | 640K | $5.8M | +26.2% | 1.241% | 3.65% |
| 20 | CITADEL ADVISORS LLC | 635K | $5.7M | +31.6% | 1.232% | 0.00% |
| 21 | GOLDMAN SACHS GROUP INC | 601K | $5.4M | +28.3% | 1.167% | 0.00% |
| 22 | 683 Capital Management, LLC | 530K | $4.8M | -3.6% | 1.028% | 0.23% |
| 23 | LAZARD ASSET MANAGEMENT LLC | 500K | $4.5M | +641.6% | 0.970% | 0.01% |
| 24 | NORTHERN TRUST CORP | 479K | $4.3M | +6.2% | 0.928% | 0.00% |
| 25 | Swiss Life Asset Management Ltd | 465K | $4.2M | +1.5% | 0.902% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in ERII β a direct measure of their conviction.
Filings activity in ERII during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 198 | +1.0% | 86.43% | +0.37 pp | $396M | 9.3% |
| Q1 2026 | 196 | +4.8% | 86.06% | +1.33 pp | $437M | 25% |
| Q4 2025 | 187 | +1.1% | 84.73% | +2.60 pp | $582M | 9.5% |
| Q3 2025 | 185 | +1.1% | 82.13% | 1.97 pp | $643M | +19% |
| Q2 2025 | 183 | 7.6% | 84.10% | +1.35 pp | $541M | 18% |
| Q1 2025 | 198 | +7.6% | 82.75% | 0.36 pp | $663M | +7.2% |
| Q4 2024 | 184 | +10% | 83.11% | 9.89 pp | $619M | 22% |
| Q3 2024 | 167 | β | 93.00% | β | $790M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | Sabol Colin R | Buy | 11K | $8.88 | $99K |
Quick answers to the most common questions about buying ERII stock.
Based on Q2 2026 13F filings, institutional ownership of Energy Recovery, Inc. stands at 86.4%, held across 198 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ERII, with approximately 6,344,252 shares worth $0.06B as of Q2 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of ERII, including CITADEL ADVISORS LLC.
Our composite Smart Money Score for ERII is 55 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
39 institutions opened new positions in ERII during Q2 2026, while 37 fully exited. 58 added to existing positions and 97 trimmed.
ERII institutional ownership rose by 0.37 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 53.1% of all reported 13F value in ERII, and the top 25 account for 75.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Energy Recovery, Inc. (ERII) Institutional Ownership