Energy Recovery, Inc. - Common Stock (ERII) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
ERII on Nasdaq
Shares outstanding
53,013,717
Price per share
$14.38
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
43,609,515
Total reported value
$588,273,935
% of total 13F portfolios
0%
Share change
+29,381
Value change
-$2,114,030
Number of holders
187
Price from insider filings
$14.38
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Energy Recovery, Inc. - Common Stock (ERII) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
AMERIPRISE FINANCIAL INC 8.6% -13% $65,620,944 -$12,046,068 4,563,348 -16% Ameriprise Financial, Inc. 31 Dec 2025
VANGUARD GROUP INC 6.4% $53,052,157 3,494,872 The Vanguard Group 31 Mar 2025
Amundi 5.4% $41,013,744 2,852,138 AMUNDI 31 Dec 2025
BROWN CAPITAL MANAGEMENT LLC 4.8% -5.6% $39,406,536 -$4,910,760 2,595,951 -11% Brown Capital Management, LLC 31 Mar 2025
FMR LLC 0.2% $1,420,390 93,570 FMR LLC 31 Dec 2024

As of 31 Dec 2025, 187 institutional investors reported holding 43,609,515 shares of Energy Recovery, Inc. - Common Stock (ERII). This represents 82% of the company’s total 53,013,717 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Energy Recovery, Inc. - Common Stock (ERII) together control 65% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 12% 6,337,391 +9.7% 0% $85,491,399
AMERIPRISE FINANCIAL INC 8.6% 4,563,348 -8.1% 0.01% $61,559,564
VANGUARD GROUP INC 7.3% 3,852,438 +2.4% 0% $51,969,389
Amundi 5.4% 2,851,691 +324% 0.01% $38,456,777
FIL Ltd 3.8% 1,993,506 -2.3% 0.02% $26,892,396
STATE STREET CORP 3.3% 1,764,522 +23% 0% $23,803,402
Legal & General Group Plc 2.5% 1,343,847 +2.8% 0% $18,128,496
GEODE CAPITAL MANAGEMENT, LLC 2.4% 1,260,894 -2.4% 0% $17,011,691
MORGAN STANLEY 1.8% 973,294 +4.6% 0% $13,129,740
AVENIR CORP 1.8% 969,580 -5.5% 1.4% $13,079,641
DIMENSIONAL FUND ADVISORS LP 1.8% 949,489 +2.6% 0% $12,808,451
DIAMOND HILL CAPITAL MANAGEMENT INC 1.7% 888,358 -0.73% 0.06% $11,983,949
Select Equity Group, L.P. 1.5% 773,577 +3% 0.05% $10,435,554
BROWN CAPITAL MANAGEMENT LLC 1.4% 764,793 -52% 0.85% $10,317,058
Invesco Ltd. 1.4% 746,036 +16% 0% $10,064,025
ACK Asset Management LLC 1.3% 677,251 1.1% $9,136,116
GOLDMAN SACHS GROUP INC 1.1% 607,176 +9.5% 0% $8,190,804
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.84% 444,590 -1% 0% $5,997,519
NORTHERN TRUST CORP 0.83% 438,397 -10% 0% $5,913,974
Swiss Life Asset Management Ltd 0.82% 434,131 0% 0.03% $5,856,428
JACOBS LEVY EQUITY MANAGEMENT, INC 0.8% 426,733 +20% 0.02% $5,756,628
CITADEL ADVISORS LLC 0.79% 418,587 +26% 0% $5,646,739
KLP KAPITALFORVALTNING AS 0.73% 387,711 +6.7% 0.02% $5,230,221
Qube Research & Technologies Ltd 0.73% 385,687 -23% 0.01% $5,202,918
PINNACLE ASSOCIATES LTD 0.72% 380,230 -4.8% 0.07% $5,129,303

Institutional Holders of Energy Recovery, Inc. - Common Stock (ERII) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 43,609,515 $588,273,935 -$2,114,030 $13.49 187
2025 Q3 43,928,656 $677,472,798 -$20,615,839 $15.42 190
2025 Q2 45,392,087 $580,050,458 +$1,176,661 $12.78 183
2025 Q1 44,813,911 $711,784,464 -$2,908,851 $15.89 201
2024 Q4 45,029,854 $661,875,967 -$60,271,494 $14.70 186
2024 Q3 48,354,214 $841,407,436 +$10,330,441 $17.39 168
2024 Q2 47,879,802 $636,173,806 +$13,482,596 $13.29 173
2024 Q1 46,623,572 $735,282,433 -$29,800,229 $15.79 188
2023 Q4 47,819,800 $900,405,572 +$10,094,712 $18.84 190
2023 Q3 46,063,526 $976,118,545 +$33,569,554 $21.21 179
2023 Q2 44,825,656 $1,252,724,342 +$5,874,717 $27.95 185
2023 Q1 44,719,990 $1,030,501,233 +$9,620,585 $23.05 175
2022 Q4 44,424,299 $910,682,310 +$36,823,812 $20.49 173
2022 Q3 42,802,107 $931,071,832 +$21,942,449 $21.74 171
2022 Q2 41,255,480 $801,141,267 +$70,815,330 $19.42 159
2022 Q1 37,475,594 $754,678,767 +$54,949,235 $20.14 163
2021 Q4 34,709,286 $745,881,660 +$84,629,828 $21.49 158
2021 Q3 30,630,882 $582,921,626 +$28,802,558 $19.03 149
2021 Q2 29,039,326 $661,488,345 +$57,422,450 $22.78 154
2021 Q1 26,598,480 $487,803,860 +$41,201,790 $18.34 137
2020 Q4 24,635,141 $336,003,589 +$31,481,124 $13.64 110
2020 Q3 22,480,718 $184,346,036 -$1,339,728 $8.20 110
2020 Q2 22,649,357 $172,094,059 +$14,114,282 $7.60 106
2020 Q1 20,815,450 $154,871,595 +$8,183,647 $7.44 100
2019 Q4 19,671,656 $192,583,177 +$6,739,357 $9.79 95
2019 Q3 19,008,210 $176,102,977 +$13,629,880 $9.26 93
2019 Q2 18,023,471 $187,808,170 +$8,919,378 $10.42 103
2019 Q1 17,430,823 $152,170,847 -$6,463,846 $8.73 102
2018 Q4 18,631,833 $125,427,818 +$5,086,416 $6.73 109
2018 Q3 18,228,138 $163,078,316 -$14,075,819 $8.95 109
2018 Q2 19,889,560 $160,700,252 -$4,492,503 $8.08 106
2018 Q1 20,431,595 $167,945,963 +$7,327,774 $8.22 108
2017 Q4 19,470,477 $170,349,415 +$13,168,341 $8.75 118
2017 Q3 17,990,256 $142,078,183 -$1,091,964 $7.90 100
2017 Q2 18,052,727 $149,634,676 +$9,521,805 $8.29 97
2017 Q1 16,899,996 $140,593,308 +$2,124,878 $8.32 110
2016 Q4 18,474,807 $191,195,769 +$22,106,773 $10.35 121
2016 Q3 14,910,478 $238,265,253 +$28,069,779 $15.98 114
2016 Q2 13,596,994 $120,899,114 +$21,909,309 $8.89 102
2016 Q1 11,072,737 $114,482,000 +$8,811,473 $10.34 88
2015 Q4 10,384,245 $73,392,000 +$17,863,483 $7.07 69
2015 Q3 7,863,129 $16,827,000 -$3,316,891 $2.14 51
2015 Q2 9,282,577 $25,432,592 -$8,395,128 $2.74 60
2015 Q1 12,028,654 $31,157,744 -$21,558,383 $2.59 68
2014 Q4 15,804,392 $83,273,923 -$3,145,001 $5.27 73
2014 Q3 16,670,719 $59,020,563 -$9,763,365 $3.54 75
2014 Q2 18,993,982 $93,444,850 -$2,500,466 $4.92 89
2014 Q1 19,458,982 $103,445,557 +$2,041,815 $5.32 90