Energy Recovery, Inc.
US ˙ NasdaqGS ˙ US29270J1007

SecurityERII / Energy Recovery, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership877,431 shares
Latest Disclosed Value $ 8,835,070
Dimensional Fund Advisors Lp reports 7.59% decrease in ownership of ERII / Energy Recovery, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 877,431 shares of Energy Recovery, Inc. (US:ERII) valued at $8,835,730 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 949,489 shares of Energy Recovery, Inc.. This represents a change in shares of -7.59% during the quarter. The current value of the position is $7,054,545 USD.

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)
2026-05-07 2026-03-31 13F ENERGY RECOVERY COM 29270J100 877,431 -72,058 -7.59 8,835 -31.02 0.0004
2026-02-12 2025-12-31 13F ENERGY RECOVERY COM 29270J100 949,489 24,392 2.64 12,808 -10.21 0.0027
2025-11-12 2025-09-30 13F ENERGY RECOVERY COM 29270J100 925,097 22,708 2.52 14,265 23.69 0.0031
2025-08-12 2025-06-30 13F ENERGY RECOVERY COM 29270J100 902,389 96,018 11.91 11,532 -9.99 0.0027
2025-05-13 2025-03-31 13F ENERGY RECOVERY COM 29270J100 806,371 38,280 4.98 12,813 13.47 0.0032
2025-02-13 2024-12-31 13F ENERGY RECOVERY COM 29270J100 768,091 89,248 13.15 11,291 -4.35 0.0027
2024-11-07 2024-09-30 13F ENERGY RECOVERY COM 29270J100 678,843 -65,812 -8.84 11,805 19.28 0.0029
2024-08-09 2024-06-30 13F ENERGY RECOVERY COM 29270J100 744,655 -162,135 -17.88 9,896 -30.88 0.0026
2024-05-10 2024-03-31 13F ENERGY RECOVERY COM 29270J100 906,790 17,192 1.93 14,318 -14.57 0.0039
2024-02-07 2023-12-31 13F ENERGY RECOVERY COM 29270J100 889,598 60,042 7.24 16,760 -4.74 0.0049
2023-11-09 2023-09-30 13F ENERGY RECOVERY COM 29270J100 829,556 71,939 9.50 17,594 -16.91 0.0058
2023-08-09 2023-06-30 13F ENERGY RECOVERY COM 29270J100 757,617 72,050 10.51 21,175 34.02 0.0067
2023-05-12 2023-03-31 13F ENERGY RECOVERY COM 29270J100 685,567 7,358 1.08 15,800 121,438.46 0.0053
2023-02-09 2022-12-31 13F ENERGY RECOVERY COM 29270J100 678,209 35,329 5.50 14 -99.91 0.0041
2022-11-10 2022-09-30 13F ENERGY RECOVERY COM 29270J100 642,880 69,296 12.08 13,977 25.49 0.0054
2022-08-12 2022-06-30 13F ENERGY RECOVERY COM 29270J100 573,584 57,675 11.18 11,138 7.19 0.0040
2022-05-13 2022-03-31 13F ENERGY RECOVERY COM 29270J100 515,909 28,563 5.86 10,391 -0.78 0.0032
2022-02-09 2021-12-31 13F ENERGY RECOVERY COM 29270J100 487,346 2,859 0.59 10,473 13.59 0.0032
2021-11-12 2021-09-30 13F ENERGY RECOVERY COM 29270J100 484,487 96,726 24.94 9,220 4.39 0.0030
2021-08-12 2021-06-30 13F ENERGY RECOVERY COM 29270J100 387,761 91,325 30.81 8,832 62.56 0.0028
2021-05-14 2021-03-31 13F ENERGY RECOVERY COM 29270J100 296,436 47,645 19.15 5,433 60.12 0.0018
2021-03-08 2020-12-31 13F/A-2 ENERGY RECOVERY COM 29270J100 248,791 17,519 7.58 3,393 78.96 0.0012
2021-02-11 2020-12-31 13F ENERGY RECOVERY COM 29270J100 248,791 17,519 3,393 1,225.3713
2020-11-12 2020-09-30 13F ENERGY RECOVERY COM 29270J100 231,272 5,187 2.29 1,896 10.23 0.0008
2020-08-13 2020-06-30 13F ENERGY RECOVERY COM 29270J100 226,085 19,726 9.56 1,720 12.13 0.0008
2020-05-14 2020-03-31 13F ENERGY RECOVERY COM 29270J100 206,359 64,787 45.76 1,534 10.68 0.0008
2020-02-14 2019-12-31 13F ENERGY RECOVERY COM 29270J100 141,572 32,220 29.46 1,386 36.82 0.0005
2019-11-12 2019-09-30 13F ENERGY RECOVERY COM 29270J100 109,352 47,322 76.29 1,013 56.81 0.0004
2019-08-13 2019-06-30 13F ENERGY RECOVERY COM 29270J100 62,030 31,096 100.52 646 139.26 0.0003
2019-08-12 2019-03-31 13F/A-2 ENERGY RECOVERY COM 29270J100 30,934 0 0.00 270 29.81 0.0001
2019-05-10 2019-03-31 13F ENERGY RECOVERY COM 29270J100 30,934 0 270
2019-02-26 2018-12-31 13F/A-1 ENERGY RECOVERY COM 29270J100 30,934 0 0.00 208 -24.91 0.0001
2019-02-13 2018-12-31 13F ENERGY RECOVERY COM 29270J100 30,934 0 208
2018-11-13 2018-09-30 13F ENERGY RECOVERY COM 29270J100 30,934 0 0.00 277 10.80 0.0001
2018-08-10 2018-06-30 13F ENERGY RECOVERY COM 29270J100 30,934 -95,170 -75.47 250 -76.17 0.0001
2017-05-12 2017-03-31 13F ENERGY RECOVERY COM 29270J100 126,104 -336,704 -72.75 1,049 -78.10 0.0005
2017-02-09 2016-12-31 13F ENERGY RECOVERY COM 29270J100 462,808 -292,001 -38.69 4,790 -60.29 0.0024
2016-11-10 2016-09-30 13F ENERGY RECOVERY COM 29270J100 754,809 -88,798 -10.53 12,062 60.85 0.0065
2016-08-09 2016-06-30 13F ENERGY RECOVERY COM 29270J100 843,607 -14,008 -1.63 7,499 -15.43 0.0043
2016-05-13 2016-03-31 13F ENERGY RECOVERY COM 29270J100 857,615 -1,614 -0.19 8,867 45.96 0.0053
2016-02-10 2015-12-31 13F ENERGY RECOVERY COM 29270J100 859,229 -9,191 -1.06 6,075 226.96 0.0038
2015-11-13 2015-09-30 13F ENERGY RECOVERY COM 29270J100 868,420 0 0.00 1,858 -21.90 0.0012
2015-08-14 2015-06-30 13F ENERGY RECOVERY COM 29270J100 868,420 -60,343 -6.50 2,379 -1.08 0.0015
2015-05-14 2015-03-31 13F ENERGY RECOVERY COM 29270J100 928,763 -16,411 -1.74 2,405 -51.72 0.0015
2015-02-06 2014-12-31 13F ENERGY RECOVERY COM 29270J100 945,174 -28,350 -2.91 4,981 44.54 0.0033
2014-11-13 2014-09-30 13F ENERGY RECOVERY COM 29270J100 973,524 -420 -0.04 3,446 -28.10 0.0024
2014-08-08 2014-06-30 13F ENERGY RECOVERY COM 29270J100 973,944 -18,986 -1.91 4,793 -9.26 0.0033
2014-05-14 2014-03-31 13F ENERGY RECOVERY COM 29270J100 992,930 -21,839 -2.15 5,282 -6.40 0.0039
2014-02-12 2013-12-31 13F ENERGY RECOVERY COM 29270J100 1,014,769 -17,485 -1.69 5,643 -24.59 0.0044
2013-11-13 2013-09-30 13F ENERGY RECOVERY COM 29270J100 1,032,254 192,682 22.95 7,483 115.77 0.0065
2013-08-15 2013-06-30 13F ENERGY RECOVERY COM 29270J100 839,572 839,572 3,468 0.0033
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.