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Security record · archived quarter

ERII

Energy Recovery, Inc. · Industrials · Industrial - Pollution & Treatment Controls

7.85 +0.6% mkt cap $404.63M quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
12Tracked holders
-1Δ holders
5.18MShares held
$82.24MReported value
+1New positions
−2Exits
Falling Conviction score 33/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth -7.7% · share flow -0.6% · net new positions -8.3%formula
Broad distribution — falling shares and fewer holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 81 +2 33.13M $298.77M +10 −8
Q1 2026 82 +4 32.96M $331.95M +11 −7
Q4 2025 78 0 33.33M $449.55M
Q3 2025 17 +1 15.90M $245.23M +1
Q2 2025 13 -2 12.94M $165.36M −2
Q1 2025 12 -1 5.18M $82.24M +1 −2
Q4 2024 13 +5 5.21M $76.55M +5
Q3 2024 7 -1 3.26M $56.62M +1 −2
Q2 2024 8 2.95M $39.27M
Holder count
Who holds it · Q1 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 State Street Global Advisors (passive) 1.43M -1.2% $22.77M 0.0% ▼ Trim 2 SEC ↗
2 Geode Capital Management (passive) 1.39M +2.3% $22.08M 0.0% ▲ Add 4 SEC ↗
3 Geode Capital Management (passive) 1.39M +2.3% $22.08M 0.0% ▲ Add 4 SEC ↗
4 Baillie Gifford 1.10M -1.8% $17.47M 0.0% ▼ Trim 3 SEC ↗
5 Baillie Gifford 1.10M -1.8% $17.47M 0.0% ▼ Trim 3 SEC ↗
6 Baillie Gifford 1.10M -1.8% $17.47M 0.0% ▼ Trim 3 SEC ↗
7 Baillie Gifford 1.10M -1.8% $17.47M 0.0% ▼ Trim 3 SEC ↗
8 Citadel Advisors 282.01K +489.0% $4.48M 0.0% ▲ Add 4 SEC ↗
9 Citadel Advisors 282.01K +489.0% $4.48M 0.0% ▲ Add 4 SEC ↗
10 D. E. Shaw & Co. 262.64K -30.8% $4.17M 0.0% ▼ Trim 4 SEC ↗
11 D. E. Shaw & Co. 262.64K -30.8% $4.17M 0.0% ▼ Trim 4 SEC ↗
12 Renaissance Technologies 241.50K +26.8% $3.84M 0.0% ▲ Add 2 SEC ↗
13 Millennium Management 176.49K +31.7% $2.80M 0.0% ▲ Add 2 SEC ↗
14 Arrowstreet Capital 136.45K New $2.17M 0.0% New 1 SEC ↗
15 Two Sigma Investments 53.44K +243.3% $849,177 0.0% ▲ Add 2 SEC ↗
16 Marshall Wace 47.28K -73.4% $751,341 0.0% ▼ Trim 2 SEC ↗
17 Marshall Wace 47.28K -73.4% $751,341 0.0% ▼ Trim 2 SEC ↗
18 T. Rowe Price 41.25K +7.8% $656,000 0.0% ▲ Add 4 SEC ↗
19 AQR Capital Management 13.39K -84.7% $212,782 0.0% ▼ Trim 4 SEC ↗
20 AQR Capital Management 13.39K -84.7% $212,782 0.0% ▼ Trim 4 SEC ↗
21 AQR Capital Management 13.39K -84.7% $212,782 0.0% ▼ Trim 4 SEC ↗
22 AQR Capital Management 13.39K -84.7% $212,782 0.0% ▼ Trim 4 SEC ↗
23 AQR Capital Management 13.39K -84.7% $212,782 0.0% ▼ Trim 4 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Arrowstreet Capital $2.17M 0.0%

Exited

Wellington Management $2.15M was 0.0%
Point72 Asset Management $909,212 was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 195 holders, 44.28M shares, $436.20M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q1 2025 · Methodology · Get this via the API