Energy Recovery, Inc.
US ˙ NasdaqGS ˙ US29270J1007

SecurityERII / Energy Recovery, Inc.
InstitutionAmundi
Latest Disclosed Ownership3,770,357 shares
Ownership 7.14%
Amundi ownership in ERII / Energy Recovery, Inc.

2026-04-10 - Amundi has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,770,357 shares of Energy Recovery, Inc. (US:ERII). This represents 7.14 percent ownership of the company. In their previous filing dated 2026-02-24 , Amundi had reported owning 2,852,138 shares, indicating an increase of 32.19 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2026-04-10 2026-04-10 13G/A 2,852,138 3,770,357 32.19 7.14 32.71
2026-02-24 2026-02-24 13G/A 2,852,138 2,852,138 0.00 5.38 0.00
2026-02-17 2026-02-17 13G 2,852,138 5.38

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ENERGY RECOVERY COM 29270J100 3,740,309 888,618 31.16 37,648 -2.10 0.0043
2026-02-17 2025-12-31 13F ENERGY RECOVERY COM 29270J100 2,851,691 2,178,560 323.65 38,457 265.76 0.0105
2025-11-14 2025-09-30 13F ENERGY RECOVERY COM 29270J100 673,131 314,752 87.83 10,515 127.82 0.0034
2025-08-13 2025-06-30 13F ENERGY RECOVERY COM 29270J100 358,379 11,144 3.21 4,616 -11.10 0.0016
2025-05-15 2025-03-31 13F ENERGY RECOVERY COM 29270J100 347,235 -5,023 -1.43 5,191 -0.35 0.0019
2025-02-07 2024-12-31 13F ENERGY RECOVERY COM 29270J100 352,258 -10,641 -2.93 5,210 -22.94 0.0018
2024-11-13 2024-09-30 13F ENERGY RECOVERY COM 29270J100 362,899 -13,333 -3.54 6,761 38.75 0.0025
2024-08-14 2024-06-30 13F ENERGY RECOVERY COM 29270J100 376,232 -39,418 -9.48 4,872 -14.00 0.0019
2024-05-15 2024-03-31 13F ENERGY RECOVERY COM 29270J100 415,650 -8,010 -1.89 5,665 -23.93 0.0024
2024-02-14 2023-12-31 13F ENERGY RECOVERY COM 29270J100 423,660 42,292 11.09 7,448 0.09 0.0034
2023-11-14 2023-09-30 13F ENERGY RECOVERY COM 29270J100 381,368 1,515 0.40 7,440 -31.51 0.0037
2023-08-14 2023-06-30 13F ENERGY RECOVERY COM 29270J100 379,853 10,243 2.77 10,864 25.50 0.0055
2023-05-15 2023-03-31 13F ENERGY RECOVERY COM 29270J100 369,610 1,157 0.31 8,656 7.77 0.0047
2023-02-14 2022-12-31 13F ENERGY RECOVERY COM 29270J100 368,453 -47,444 -11.41 8,032 -15.15 0.0044
2022-11-14 2022-09-30 13F ENERGY RECOVERY COM 29270J100 415,897 398,575 2,300.98 9,466 2,768.48 0.0056
2022-09-02 2022-06-30 13F/A-1 ENERGY RECOVERY COM 29270J100 17,322 17,322 330 0.0003
2022-08-15 2022-06-30 13F ENERGY RECOVERY COM 29270J100 17,322 17,322 330 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.