ERII

Energy Recovery Inc
IndustrialsUSCUSIP 29270J100◍ Confluence graph
Tracked 13F Holders
181
-99 QoQ
13F Value (tracked)
$408.2M
Insider Net · 180d
-$1.9M
2↑ 4↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)35 adding · 16 trimming
Insider net (180d)-$1.9M

Who owns ERII?

181 tracked 13F filers

181 tracked 13F filers disclose a position in ERII as of the latest SEC 13F filings, a combined $408.2M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$61.3M
6.1M
−3.9%
Reduced · −246K sh
Q1 2026
2AMERIPRISE FINANCIAL INC
$53.0M
5.3M
+15%
Added · +696K sh
Q1 2026
3Amundi
$37.6M
3.7M
+31%
Added · +889K sh
Q1 2026
4VANGUARD CAPITAL MANAGEMENT LLC
$22.5M
2.2M
First observed position
No prior filed position
Q1 2026
5FIL Ltd
$20.0M
2.0M
−0.3%
Reduced · −6K sh
Q1 2026
6Legal & General Group Plc
$19.2M
1.9M
+42%
Added · +559K sh
Q1 2026
7GEODE CAPITAL MANAGEMENT, LLC
$15.3M
1.7M
+31%
Added · +402K sh
Q2 2026
8STATE STREET CORP
$14.7M
1.6M
−8.3%
Reduced · −147K sh
Q2 2026
9VANGUARD PORTFOLIO MANAGEMENT LLC
$12.7M
1.3M
First observed position
No prior filed position
Q1 2026
10DIMENSIONAL FUND ADVISORS LP
$8.8M
877K
−7.6%
Reduced · −72K sh
Q1 2026
11MORGAN STANLEY
$8.0M
793K
−19%
Reduced · −181K sh
Q1 2026
12AVENIR CORP
$6.3M
694K
−15%
Reduced · −124K sh
Q2 2026
13Kopion Asset Management, LLC
$5.8M
640K
+26%
Added · +133K sh
Q2 2026
14683 Capital Management, LLC
$4.8M
530K
−3.6%
Reduced · −20K sh
Q2 2026
15ArrowMark Colorado Holdings LLC
$5.2M
516K
+37%
Added · +139K sh
Q1 2026
16ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
$5.2M
514K
+48%
Added · +166K sh
Q1 2026
17GOLDMAN SACHS GROUP INC
$4.7M
469K
−23%
Reduced · −139K sh
Q1 2026
18Swiss Life Asset Management Ltd
$4.2M
465K
+1.5%
Added · +7K sh
Q2 2026
19Raiffeisen Bank International AG
$4.1M
460K
+31%
Added · +110K sh
Q2 2026
20NORTHERN TRUST CORP
$4.5M
450K
+2.7%
Added · +12K sh
Q1 2026
21CITADEL ADVISORS LLC
$4.5M
449K
+7.4%
Added · +31K sh
Q1 2026
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$4.3M
431K
−3.0%
Reduced · −13K sh
Q1 2026
23CenterBook Partners LP
$3.8M
421K
+55%
Added · +149K sh
Q2 2026
24KLP KAPITALFORVALTNING AS
$4.1M
405K
+4.3%
Added · +17K sh
Q1 2026
25VANGUARD FIDUCIARY TRUST CO
$3.7M
364K
First observed position
No prior filed position
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is ERII being bought or sold by institutions?

Last quarter, 11 funds opened a new position in ERII and 24 added to an existing one, while 16 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
11
funds
Added
24
funds
Reduced
16
funds
Exited
0
funds

Funds that own ERII also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT94 funds$207.3B
AMAZON.COM INCAMZN93 funds$151.1B
NVIDIA CORPNVDA91 funds$295.2B
APPLE INCAAPL91 funds$224.4B
BROADCOM INCAVGO88 funds$120.0B
ALPHABET INC-CL AGOOGL88 funds$116.0B
JPMORGAN CHASE & COJPM88 funds$42.1B
VISA INC-CLASS A SHARESV87 funds$43.0B
MASTERCARD INC - AMA87 funds$40.7B
LAM RESEARCH CORPLRCX87 funds$27.6B
META PLATFORMS INC-CLASS AMETA86 funds$83.5B
ELI LILLY & COLLY86 funds$58.4B

Ranked by how many of ERII's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$266K
2 insiders
Sells · 180d
$2.2M
4 insiders
Net
-$1.9M
8 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jul 28, 2026Yeung WilliamChief Legal OfficerSell (S)2K$18K
Jul 28, 2026Clemente RodneySVP, WaterSell (S)5K$46K
Jun 15, 2026BUEHLER ALEXANDER JInterim President and CEO, DirectorSell (S)15K$130K
Jun 15, 2026Sabol Colin RDirectorBuy (P)11K$99K
May 13, 2026TONDREAU PAMELA L.DirectorBuy (P)20K$167K
Apr 6, 2026Hanstveit ArveDirectorSell (S)2K$25K
Apr 2, 2026Hanstveit ArveDirectorSell (S)165K$1.7M
Mar 10, 2026Hanstveit ArveDirectorSell (S)25K$274K
Mar 6, 2026Hanstveit ArveDirectorSell (S)12K$123K
Mar 5, 2026Hanstveit ArveDirectorSell (S)38K$411K
Mar 5, 2026Ramanan NatarajanChief Technology OfficerSell (S)272$3K
Mar 4, 2026Clemente RodneySVP, WaterSell (S)21K$218K

Institutional ownership over time

70 funds-45 since Q3 2024
085169Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $71.1M

Recent filings

15 shown

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Connected entities for ERII

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Ask your agent what changed in ERII

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/ERII/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for ERII.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ERII. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.