Aehr Test Systems, Inc.
US ˙ NasdaqCM ˙ US00760J1088

SecurityAEHR / Aehr Test Systems, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership93,037 shares
Latest Disclosed Value $ 3,444,699
Dimensional Fund Advisors Lp reports 14.70% decrease in ownership of AEHR / Aehr Test Systems, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 93,037 shares of Aehr Test Systems, Inc. (US:AEHR) valued at $3,449,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 109,067 shares of Aehr Test Systems, Inc.. This represents a change in shares of -14.70% during the quarter. The current value of the position is $9,159,493 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 AEHR TEST SYS COM 00760J108 93,037 -16,030 -14.70 3,445 56.40 0.0007
2026-02-12 2025-12-31 13F AEHR TEST SYS COM 00760J108 109,067 -22,246 -16.94 2,202 -44.31 0.0005
2025-11-12 2025-09-30 13F AEHR TEST SYS COM 00760J108 131,313 -1,927 -1.45 3,954 129.62 0.0008
2025-08-12 2025-06-30 13F AEHR TEST SYS COM 00760J108 133,240 -1,434 -1.06 1,722 75.36 0.0004
2025-05-13 2025-03-31 13F AEHR TEST SYS COM 00760J108 134,674 -2,567 -1.87 982 -56.97 0.0002
2025-02-13 2024-12-31 13F AEHR TEST SYS COM 00760J108 137,241 2,365 1.75 2,283 31.68 0.0005
2024-11-07 2024-09-30 13F AEHR TEST SYS COM 00760J108 134,876 -9,085 -6.31 1,733 7.77 0.0004
2024-08-09 2024-06-30 13F AEHR TEST SYS COM 00760J108 143,961 -89,413 -38.31 1,608 -44.42 0.0004
2024-05-10 2024-03-31 13F AEHR TEST SYS COM 00760J108 233,374 -259,705 -52.67 2,894 -77.89 0.0008
2024-02-07 2023-12-31 13F AEHR TEST SYS COM 00760J108 493,079 37,169 8.15 13,082 -37.21 0.0038
2023-11-09 2023-09-30 13F AEHR TEST SYS COM 00760J108 455,910 7,840 1.75 20,835 12.74 0.0068
2023-08-09 2023-06-30 13F AEHR TEST SYS COM 00760J108 448,070 119,878 36.53 18,482 81.45 0.0059
2023-05-12 2023-03-31 13F AEHR TEST SYS COM 00760J108 328,192 315,009 2,389.51 10,185 0.0034
2023-02-09 2022-12-31 13F AEHR TEST SYS COM 00760J108 13,183 0 0.00 0 -100.00 0.0001
2022-11-10 2022-09-30 13F AEHR TEST SYS COM 00760J108 13,183 0 0.00 186 87.88 0.0001
2022-08-12 2022-06-30 13F AEHR TEST SYS COM 00760J108 13,183 0 0.00 99 -26.12 0.0000
2022-05-13 2022-03-31 13F AEHR TEST SYS COM 00760J108 13,183 -54,875 -80.63 134 -91.86 0.0000
2022-02-09 2021-12-31 13F AEHR TEST SYS COM 00760J108 68,058 -2,351 -3.34 1,646 71.28 0.0005
2021-11-12 2021-09-30 13F AEHR TEST SYS COM 00760J108 70,409 0 0.00 961 395.36 0.0003
2021-08-12 2021-06-30 13F AEHR TEST SYS COM 00760J108 70,409 0 0.00 194 9.60 0.0001
2021-05-14 2021-03-31 13F AEHR TEST SYS COM 00760J108 70,409 57,131 430.27 177 420.59 0.0001
2021-03-08 2020-12-31 13F/A-2 AEHR TEST SYS COM 00760J108 13,278 0 0.00 34 88.89 0.0000
2021-02-11 2020-12-31 13F AEHR TEST SYS COM 00760J108 13,278 0 34 12.2790
2020-11-12 2020-09-30 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 18 -30.77 0.0000
2020-08-13 2020-06-30 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 26 18.18 0.0000
2020-05-14 2020-03-31 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 22 -18.52 0.0000
2020-02-14 2019-12-31 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 27 12.50 0.0000
2019-11-12 2019-09-30 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 24 9.09 0.0000
2019-08-13 2019-06-30 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 22 22.22 0.0000
2019-08-12 2019-03-31 13F/A-2 AEHR TEST SYSTEMS COM 00760J108 13,278 0 0.00 18 -5.26 0.0000
2019-05-10 2019-03-31 13F AEHR TEST SYSTEMS COM 00760J108 13,278 0 18
2019-02-26 2018-12-31 13F/A-1 AEHR TEST SYSTEMS COM 00760J108 13,278 -8,100 -37.89 19 -59.57 0.0000
2019-02-13 2018-12-31 13F AEHR TEST SYSTEMS COM 00760J108 13,278 -8,100 19
2018-11-13 2018-09-30 13F AEHR TEST SYSTEMS COM 00760J108 21,378 21,378 47 0.0000
2016-08-09 2016-06-30 13F AEHR TEST SYSTEMS COM 00760J108 0 -20,648 -100.00 0 -100.00
2016-05-13 2016-03-31 13F AEHR TEST SYSTEMS COM 00760J108 20,648 -11,600 -35.97 24 -60.66 0.0000
2016-02-10 2015-12-31 13F AEHR TEST SYSTEMS COM 00760J108 32,248 -24,640 -43.31 61 -54.14 0.0000
2015-11-13 2015-09-30 13F AEHR TEST SYSTEMS COM 00760J108 56,888 -25,221 -30.72 133 -28.88 0.0001
2015-08-14 2015-06-30 13F AEHR TEST SYSTEMS COM 00760J108 82,109 -62,125 -43.07 187 -44.67 0.0001
2015-05-14 2015-03-31 13F AEHR TEST SYSTEMS COM 00760J108 144,234 -5,275 -3.53 338 -11.29 0.0002
2015-02-06 2014-12-31 13F AEHR TEST SYSTEMS COM 00760J108 149,509 -8,461 -5.36 381 -4.75 0.0003
2014-11-13 2014-09-30 13F AEHR TEST SYSTEMS COM 00760J108 157,970 -500 -0.32 400 17.30 0.0003
2014-08-08 2014-06-30 13F AEHR TEST SYSTEMS COM 00760J108 158,470 -1,200 -0.75 341 -25.05 0.0002
2014-05-14 2014-03-31 13F AEHR TEST SYSTEMS COM 00760J108 159,670 0 0.00 455 -7.71 0.0003
2014-02-12 2013-12-31 13F AEHR TEST SYSTEMS COM 00760J108 159,670 0 0.00 493 32.53 0.0004
2013-11-13 2013-09-30 13F AEHR TEST SYSTEMS COM 00760J108 159,670 -2,790 -1.72 372 77.14 0.0003
2013-08-15 2013-06-30 13F AEHR TEST SYSTEMS COM 00760J108 162,460 162,460 210 0.0002
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.