Energy Recovery, Inc. (ERII) — Institutional Holders, Q2 2026

200 institutional investment managers reported a ERII position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $395.0M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← ERII stock profile

ERII in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

Trimmed

Sold out

Biggest buyers

MACKENZIE FINANCIALNew · +1,187,686 sh+$10.7M
MARSHALL WACE, LLPAdded · +570,951 sh+$5.1M
TUDOR INVESTMENT ET ALNew · +471,905 sh+$4.3M
MORGAN STANLEYAdded · +444,312 sh+$4.0M
LAZARD ASSET MANAGEMENTAdded · +432,632 sh+$3.9M

Biggest sellers

AMERIPRISE FINANCIALTrimmed · -4,580,580 sh-$41.3M
DIAMOND HILL CAPITAL MANAGEMENTSold out · -673,035 sh-$6.1M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPSold out · -514,102 sh-$4.6M
Select Equity Group, L.P.Sold out · -394,208 sh-$3.6M
MILLENNIUM MANAGEMENTSold out · -322,341 sh-$2.9M

ERII 13F holders ranked 1–100 of 200

Institutional investors reporting a position in Energy Recovery, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 6,344,252 sh	6,344,252	$57.2M	<0.01%	+4.2%
2	Amundi#2 · 4,003,535 sh	4,003,535	$36.1M	<0.01%	+7.0%
3	VANGUARD CAPITAL MANAGEMENT#3 · 2,183,718 sh	2,183,718	$19.7M	<0.01%	-2.1%
4	Legal & General Group Plc#4 · 2,059,764 sh	2,059,764	$18.6M	<0.01%	+8.3%
5	FIL Ltd#5 · 1,715,722 sh	1,715,722	$15.5M	0.01%	-13.7%
6	GEODE CAPITAL MANAGEMENT#6 · 1,697,550 sh	1,697,550	$15.3M	<0.01%	+31.1%
7	STATE STREET#7 · 1,625,893 sh	1,625,893	$14.7M	<0.01%	-8.3%
8	VANGUARD PORTFOLIO MANAGEMENT#8 · 1,263,667 sh	1,263,667	$11.4M	<0.01%	+0.2%
9	MORGAN STANLEY#9 · 1,237,003 sh	1,237,003	$11.2M	<0.01%	+56.1%
10	MACKENZIE FINANCIAL#10 · 1,187,686 sh	1,187,686	$10.7M	0.01%	New
11	Invesco Ltd.#11 · 925,550 sh	925,550	$8.3M	<0.01%	+12.0%
12	DIMENSIONAL FUND ADVISORS#12 · 878,724 sh	878,724	$7.9M	<0.01%	+0.1%
13	ArrowMark Colorado#13 · 847,000 sh	847,000	$7.6M	0.32%	+64.1%
14	ROYCE & ASSOCIATES#14 · 752,812 sh	752,812	$6.8M	0.05%	+55.9%
15	AVENIR#15 · 693,886 sh	693,886	$6.3M	0.76%	-15.1%
16	AMERIPRISE FINANCIAL#16 · 679,236 sh	679,236	$6.1M	<0.01%	-87.1%
17	MARSHALL WACE, LLP#17 · 677,248 sh	677,248	$6.1M	<0.01%	+537.1%
18	Kopion Asset Management#18 · 639,545 sh	639,545	$5.8M	—	+26.2%
19	GOLDMAN SACHS GROUP#19 · 601,335 sh	601,335	$5.4M	<0.01%	+28.3%
20	683 Capital Management#20 · 530,000 sh	530,000	$4.8M	0.23%	-3.6%
21	LAZARD ASSET MANAGEMENT#21 · 500,061 sh	500,061	$4.5M	<0.01%	+641.6%
22	NORTHERN#22 · 478,524 sh	478,524	$4.3M	<0.01%	+6.2%
23	CITADEL ADVISORS#23 · 476,236 sh	476,236	$4.3M	<0.01%	+6.0%
24	TUDOR INVESTMENT ET AL#24 · 471,905 sh	471,905	$4.3M	<0.01%	New
25	Swiss Life Asset Management Ltd#25 · 464,661 sh	464,661	$4.2M	0.02%	+1.5%
26	Raiffeisen Bank International AG#26 · 460,000 sh	460,000	$4.1M	0.05%	+31.4%
27	Zurcher Kantonalbank (Zurich Cantonalbank)#27 · 439,817 sh	439,817	$4.0M	<0.01%	+1423.4%
28	CenterBook Partners#28 · 420,507 sh	420,507	$3.8M	0.19%	+54.7%
29	KLP KAPITALFORVALTNING AS#29 · 400,311 sh	400,311	$3.6M	0.01%	-1.0%
30	BNP PARIBAS FINANCIAL MARKETS#30 · 396,421 sh	396,421	$3.6M	<0.01%	+46.3%
31	JACOBS LEVY EQUITY MANAGEMENT#31 · 378,799 sh	378,799	$3.4M	0.01%	+16.6%
32	VANGUARD FIDUCIARY#32 · 367,399 sh	367,399	$3.3M	<0.01%	+0.9%
33	CHARLES SCHWAB INVESTMENT MANAGEMENT#33 · 367,118 sh	367,118	$3.3M	<0.01%	-14.9%
34	PINNACLE ASSOCIATES LTD#34 · 326,119 sh	326,119	$2.9M	—	-4.8%
35	BROWN CAPITAL MANAGEMENT#35 · 282,866 sh	282,866	$2.6M	0.51%	-47.4%
36	JPMORGAN CHASE#36 · 285,216 sh	285,216	$2.5M	<0.01%	+899.0%
37	AQR CAPITAL MANAGEMENT#37 · 262,844 sh	262,844	$2.4M	<0.01%	+350.6%
38	TWO SIGMA INVESTMENTS#38 · 232,829 sh	232,829	$2.1M	<0.01%	+161.9%
39	D. E. Shaw#39 · 218,707 sh	218,707	$2.0M	<0.01%	+1473.4%
40	SUSQUEHANNA INTERNATIONAL GROUP, LLP#40 · 193,919 sh	193,919	$1.7M	<0.01%	+166.6%
41	Nuveen#41 · 173,713 sh	173,713	$1.6M	<0.01%	+5.6%
42	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#42 · 169,005 sh	169,005	$1.5M	<0.01%	+2.0%
43	JUPITER ASSET MANAGEMENT LTD#43 · 165,401 sh	165,401	$1.5M	<0.01%	+35.4%
44	ISTHMUS PARTNERS#44 · 161,447 sh	161,447	$1.5M	—	+5.3%
45	Bank of New York Mellon#45 · 155,092 sh	155,092	$1.4M	<0.01%	+4.3%
46	Jump Financial#46 · 152,127 sh	152,127	$1.4M	0.01%	New
47	Polymer Capital Management (US)#47 · 144,705 sh	144,705	$1.3M	0.17%	New
48	SG Americas Securities#48 · 142,285 sh	142,285	$1.3M	<0.01%	-60.9%
49	Squarepoint Ops#49 · 125,140 sh	125,140	$1.1M	<0.01%	+198.8%
50	RICE HALL JAMES & ASSOCIATES#50 · 124,629 sh	124,629	$1.1M	0.05%	+3.4%
51	NORDEA INVESTMENT MANAGEMENT AB#51 · 124,691 sh	124,691	$1.1M	<0.01%	+18.1%
52	Y-Intercept (Hong Kong) Ltd#52 · 120,366 sh	120,366	$1.1M	—	New
53	GSA CAPITAL PARTNERS LLP#53 · 119,526 sh	119,526	$1.1M	0.07%	-61.9%
54	BANK OF AMERICA#54 · 116,322 sh	116,322	$1.0M	<0.01%	+97.9%
55	EntryPoint Capital#55 · 116,101 sh	116,101	$1.0M	0.25%	+309.2%
56	Pacer Advisors#56 · 115,956 sh	115,956	$1.0M	<0.01%	New
57	UBS Group AG#57 · 110,739 sh	110,739	$998.9K	<0.01%	-12.1%
58	Swiss National Bank#58 · 105,000 sh	105,000	$947.1K	<0.01%	0.0%
59	BALYASNY ASSET MANAGEMENT L.P.#59 · 97,386 sh	97,386	$878.4K	<0.01%	+809.1%
60	BANK OF MONTREAL#60 · 96,072 sh	96,072	$866.6K	<0.01%	New
61	Quantinno Capital Management#61 · 91,306 sh	91,306	$823.6K	<0.01%	+640.5%
62	PRICE T ROWE ASSOCIATES#62 · 89,517 sh	89,517	$808.0K	<0.01%	+35.1%
63	CARY STREET PARTNERS FINANCIAL#63 · 89,529 sh	89,529	$807.6K	0.02%	+15.4%
64	CoreCommodity Management#64 · 87,494 sh	87,494	$789.2K	0.16%	+291.8%
65	Point72 Asset Management, L.P.#65 · 82,819 sh	82,819	$747.0K	<0.01%	New
66	Russell Investments Group, Ltd.#66 · 78,003 sh	78,003	$703.6K	<0.01%	+120.9%
67	HSBC PLC#67 · 78,741 sh	78,741	$701.6K	<0.01%	-28.9%
68	Old West Investment Management#68 · 76,930 sh	76,930	$693.9K	0.07%	+64.8%
69	Inspire Investing#69 · 76,732 sh	76,732	$692.1K	—	+47.5%
70	MILFAM#70 · 75,000 sh	75,000	$676.5K	—	New
71	PRINCIPAL FINANCIAL GROUP#71 · 74,217 sh	74,217	$669.4K	<0.01%	+8.1%
72	GABELLI FUNDS#72 · 74,000 sh	74,000	$667.5K	<0.01%	0.0%
73	DEUTSCHE BANK AG\#73 · 68,525 sh	68,525	$618.1K	<0.01%	-50.9%
74	IMC-Chicago#74 · 66,819 sh	66,819	$602.7K	<0.01%	+433.1%
75	SEI INVESTMENTS#75 · 64,643 sh	64,643	$583.1K	<0.01%	+24.7%
76	RHUMBLINE ADVISERS#76 · 64,414 sh	64,414	$581.0K	<0.01%	-1.2%
77	ALLIANCEBERNSTEIN L.P.#77 · 53,350 sh	53,350	$537.2K	<0.01%	+122.8%
78	Neuberger Berman Group#78 · 58,580 sh	58,580	$528.4K	<0.01%	New
79	NewEdge Advisors#79 · 57,456 sh	57,456	$518.3K	<0.01%	New
80	KBC Group NV#80 · 56,597 sh	56,597	$511.0K	—	0.0%
81	WELLS FARGO & COMPANY#81 · 56,026 sh	56,026	$505.4K	<0.01%	+102.5%
82	ExodusPoint Capital Management#82 · 55,371 sh	55,371	$499.4K	<0.01%	New
83	CREDIT AGRICOLE S A#83 · 55,000 sh	55,000	$496.1K	<0.01%	0.0%
84	AVIVA PLC#84 · 51,436 sh	51,436	$464.0K	<0.01%	+32.8%
85	MERCER GLOBAL ADVISORS#85 · 51,285 sh	51,285	$462.6K	<0.01%	+41.2%
86	Numerai GP#86 · 51,070 sh	51,070	$460.7K	0.04%	+66.8%
87	VOYA INVESTMENT MANAGEMENT#87 · 48,521 sh	48,521	$437.7K	<0.01%	+3.6%
88	BARCLAYS PLC#88 · 45,644 sh	45,644	$411.7K	<0.01%	+64.0%
89	Pathstone#89 · 41,612 sh	41,612	$375.3K	<0.01%	+2.4%
90	JANE STREET GROUP#90 · 41,585 sh	41,585	$375.1K	0.00%	-69.3%
91	Diametric Capital#91 · 41,078 sh	41,078	$370.5K	0.04%	New
92	MISSION WEALTH MANAGEMENT#92 · 41,014 sh	41,014	$369.9K	—	+0.6%
93	MIRAE ASSET GLOBAL ETFS Ltd.#93 · 39,519 sh	39,519	$356.5K	<0.01%	-3.6%
94	HighTower Advisors#94 · 38,434 sh	38,434	$346.7K	<0.01%	-16.4%
95	VANGUARD ASSET MANAGEMENT, Ltd#95 · 36,225 sh	36,225	$326.8K	<0.01%	0.0%
96	Corient Private Wealth#96 · 33,464 sh	33,464	$301.8K	<0.01%	New
97	Brevan Howard Capital Management#97 · 31,397 sh	31,397	$283.2K	<0.01%	New
98	ALLSTATE#98 · 31,153 sh	31,153	$281.0K	<0.01%	New
99	PRELUDE CAPITAL MANAGEMENT#99 · 30,354 sh	30,354	$273.8K	0.02%	New
100	CITIGROUP#100 · 30,213 sh	30,213	$272.5K	<0.01%	+131.0%

Funds that sold out of ERII in Q2 2026 (38)

Held ERII at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ERII in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
DIAMOND HILL CAPITAL MANAGEMENT673,035 sh	673,035	$6.8M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP514,102 sh	514,102	$5.2M
Select Equity Group, L.P.394,208 sh	394,208	$4.0M
MILLENNIUM MANAGEMENT322,341 sh	322,341	$3.2M
Redmond Asset Management214,380 sh	214,380	$2.2M
RENAISSANCE TECHNOLOGIES144,265 sh	144,265	$1.5M
Trexquant Investment135,968 sh	135,968	$1.4M
Conestoga Capital Advisors133,725 sh	133,725	$1.3M
ESSEX INVESTMENT MANAGEMENT132,322 sh	132,322	$1.3M
HRT FINANCIAL76,500 sh	76,500	$770.0K
XTX Topco Ltd56,479 sh	56,479	$568.7K
VICTORY CAPITAL MANAGEMENT53,213 sh	53,213	$535.9K
STATE OF WISCONSIN INVESTMENT BOARD53,126 sh	53,126	$535.0K
Connective Capital Management49,026 sh	49,026	$493.7K
SHELTON CAPITAL MANAGEMENT46,385 sh	46,385	$467.1K
DnB Asset Management AS37,395 sh	37,395	$376.6K
Dynamic Technology Lab Private Ltd34,486 sh	34,486	$347.3K
Quadrature Capital Ltd33,559 sh	33,559	$337.9K
CAXTON ASSOCIATES LLP25,731 sh	25,731	$259.1K
Aquatic Capital Management24,100 sh	24,100	$242.7K
FOX RUN MANAGEMENT, L.L.C.21,067 sh	21,067	$206.7K
VARCOV16,280 sh	16,280	$163.9K
Campbell & Investment Adviser14,640 sh	14,640	$147.4K
MIRABELLA FINANCIAL SERVICES LLP14,362 sh	14,362	$144.6K
State of Wyoming14,004 sh	14,004	$141.0K
TWO SIGMA SECURITIES13,985 sh	13,985	$140.8K
RAYMOND JAMES FINANCIAL13,960 sh	13,960	$140.6K
Michael J. Porro & Financial Advisors10,450 sh	10,450	$105.2K
Premier Fund Managers Ltd4,314 sh	4,314	$42.0K
Essential Partners226 sh	226	$2.3K
Advisory Services Network150 sh	150	$1.5K
NORTHWESTERN MUTUAL WEALTH MANAGEMENT100 sh	100	$1.0K
ZIONS BANCORPORATION, NATIONAL ASSOCIATION63 sh	63	$634.00
Investors Portfolio Services58 sh	58	$481.00
Root Financial Partners33 sh	33	$332.00
MassMutual Private Wealth & , FSB23 sh	23	$232.00
MAI Capital Management20 sh	20	$202.00
Pinnacle Wealth Planning Services16 sh	16	$161.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.