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Aehr Test Systems

191 hedge funds and large institutions have $831M invested in Aehr Test Systems in 2026 Q1 according to their latest regulatory filings, with 62 funds opening new positions, 60 increasing their positions, 48 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed

265% more first-time investments, than exits

New positions opened: 62 | Existing positions closed: 17

141% more call options, than puts

Call options by funds: $131M | Put options by funds: $54.4M

94% more capital invested

Capital invested by funds: $428M → $831M (+$403M)

27% more funds holding

Funds holding: 150191 (+41)

25% more repeat investments, than reductions

Existing positions increased: 60 | Existing positions reduced: 48

2.74% more ownership

Funds ownership: 70.62%73.36% (+2.7%)

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

Holders
191
Holders Change
+41
Holders Change %
+27.33%
% of All Funds
2.35%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.02%
New
62
Increased
60
Reduced
48
Closed
17
Calls
$131M
Puts
$54.4M
Net Calls
+$76.5M
Net Calls Change
+$36.1M
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$84.8M +$5.11M +159,794 +8%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$79.4M -$11.7M -365,281 -15%
AIC
3
AWM Investment Company
New York
$59.1M +$1.83M +57,200 +4%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$50M +$42.1M +1,314,967 +3,824%
VCM
5
Vanguard Capital Management
Pennsylvania
$47.5M +$41M +1,281,857 New
Goldman Sachs
6
Goldman Sachs
New York
$46.8M +$34.7M +1,086,001 +617%
Baillie Gifford & Co
7
Baillie Gifford & Co
United Kingdom
$37.1M -$9.27M -289,716 -22%
VPM
8
Vanguard Portfolio Management
Pennsylvania
$34M +$29.4M +917,876 New
NCGI
9
Next Century Growth Investors
Minnesota
$28M +$6.47M +202,231 +37%
Geode Capital Management
10
Geode Capital Management
Massachusetts
$26.9M +$1.28M +40,017 +6%
State Street
11
State Street
Massachusetts
$23.1M -$24.9K -779 -0.1%
William Blair Investment Management
12
William Blair Investment Management
Illinois
$19M +$564K +17,621 +4%
GGHC
13
Gilder Gagnon Howe & Co
New York
$16.5M +$4.04M +126,348 +40%
SAM
14
Silvercrest Asset Management
New York
$12.8M +$1.15M +35,860 +12%
D.E. Shaw & Co
15
D.E. Shaw & Co
New York
$12.7M +$1.64M +51,347 +18%
Invesco
16
Invesco
Georgia
$10.6M +$8.24M +257,506 +913%
Jane Street
17
Jane Street
New York
$10.3M +$1.17M +36,607 +15%
RHJA
18
Rice Hall James & Associates
California
$10.1M -$5.8M -181,316 -40%
Walleye Capital
19
Walleye Capital
New York
$9.91M +$8.4M +262,480 +5,576%
Northern Trust
20
Northern Trust
Illinois
$9.35M +$393K +12,286 +5%
UBS Group
21
UBS Group
Switzerland
$9.15M +$116K +3,634 +1%
Charles Schwab
22
Charles Schwab
California
$8.73M -$91.8K -2,870 -1%
Connor, Clark & Lunn Investment Management (CC&L)
23
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$8.11M +$7M +218,809 New
Two Sigma Investments
24
Two Sigma Investments
New York
$7.95M -$4.52M -141,202 -40%
Susquehanna International Group
25
Susquehanna International Group
Pennsylvania
$7.49M +$2.9M +90,780 +82%

AEHR Hedge Fund Activity: Q1 2026 in Review

191 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Aehr Test Systems (AEHR) for Q1 2026, worth a combined $831M — up 94% from $428M a quarter earlier.

Buyers outnumbered sellers: 62 funds opened new AEHR positions and 17 closed out — a net gain of 45 holders — while 60 added to existing stakes and 48 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $42.1M. The largest seller was Wellington Management Group, cutting an estimated $21.7M.

  • 191 institutional investors held Aehr Test Systems (AEHR) as of Q1 2026, up from 150 in Q4 2025.
  • Funds reported $831M of Aehr Test Systems stock for Q1 2026, up 94% quarter-over-quarter.
  • 62 funds opened new Aehr Test Systems positions in Q1 2026 and 17 closed out, a net change of +45 holders.
  • The largest Aehr Test Systems buyer in Q1 2026 was T. Rowe Price Associates, an estimated $42.1M added.
  • The largest Aehr Test Systems seller in Q1 2026 was Wellington Management Group, an estimated $21.7M sold.

Based on aggregated 13F filings for Q1 2026.