WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in AEHR — Aehr Test Systems
CIK 1644956
CHICAGO, IL
Position in AEHR
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$19,032,904
+$9,025,287 QoQ
Shares Held
513,293
+3.6% QoQ
Ownership
1.57%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2025
3 quarters on record
Voting authority
Sole 76%
Shared 0%
None 24%
Common Shares in AEHR Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $683,895,121 across 5 Semiconductor Equipment & Materials names.
All Filings in AEHR
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3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $19,032,904 | 513,293 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $10,007,617 | 495,672 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $26,920,176 | 894,061 | Shares | Sole | 2025-11-12 | |
| No filing history on record for this holder in this stock. | ||||||