VANGUARD GROUP INC
Rank #1
7.42%
- Shares
- 2.34M
- Change
- +49.24K
- Change %
- +2.15%
- Filing
- Dec 31, 2025
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NASDAQ · TECHNOLOGY · Holders
Aehr Test Systems (AEHR) Institutional Ownership & Insider Trading History
Top AEHR institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Price Jun 15, 10:59 AM EDT · Statements Feb 27, 7:00 PM EST
Source timingDetailsHide
Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
Source: Market data provider
Analystevery 1 day
Provider checked •
Source: Market data provider
Newsevery 4 hr
Latest item •
Source: Market data provider
Ownership read
AEHR insider sentiment: Net selling.
VANGUARD GROUP INC is the largest loaded institutional holder. 109 sale rows and 0 purchase rows are visible in the loaded Form 4 history. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
AEHR
Purchases—
Sales620.06K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
2.34M
VANGUARD GROUP INC
Insider stance
Net selling
$42.33M sold / — bought
Latest filing
Jun 3, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data source
- Latest filing
- Jun 3, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 75
- 37 decreased in loaded rows
- Insider rows
- 120
- Market data source
Top 120 institutional holders
Aehr Test Systems (AEHR) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.
BLACKROCK
Rank #2
7.26%
- Shares
- 2.29M
- Change
- +159.79K
- Change %
- +7.51%
- Filing
- Mar 31, 2026
Increased
FMR LLC
Rank #3
6.80%
- Shares
- 2.14M
- Change
- -365.28K
- Change %
- -14.56%
- Filing
- Mar 31, 2026
Decreased
AWM INVESTMENT COMPANY
Rank #4
5.06%
- Shares
- 1.59M
- Change
- +57.20K
- Change %
- +3.72%
- Filing
- Mar 31, 2026
Increased
PRICE T ROWE ASSOCIATES INC
Rank #5
4.28%
- Shares
- 1.35M
- Change
- +1.31M
- Change %
- +38.24%
- Filing
- Mar 31, 2026
Increased
VANGUARD CAPITAL MANAGEMENT LLC
Rank #6
4.07%
- Shares
- 1.28M
- Change
- +1.28M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
GOLDMAN SACHS GROUP INC
Rank #7
4.01%
- Shares
- 1.26M
- Change
- +1.09M
- Change %
- +6.17%
- Filing
- Mar 31, 2026
Increased
BAILLIE GIFFORD & CO
Rank #8
3.18%
- Shares
- 1.00M
- Change
- -289.72K
- Change %
- -22.45%
- Filing
- Mar 31, 2026
Decreased
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #9
2.91%
- Shares
- 917.88K
- Change
- +917.88K
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
NEXT CENTURY GROWTH INVESTORS LLC
Rank #10
2.40%
- Shares
- 754.74K
- Change
- +202.23K
- Change %
- +36.60%
- Filing
- Mar 31, 2026
Increased
GEODE CAPITAL MANAGEMENT
Rank #11
2.30%
- Shares
- 725.71K
- Change
- +40.02K
- Change %
- +5.84%
- Filing
- Mar 31, 2026
Increased
STATE STREET CORP
Rank #12
1.98%
- Shares
- 623.31K
- Change
- -779
- Change %
- -12.00%
- Filing
- Mar 31, 2026
Decreased
WILLIAM BLAIR INVESTMENT MANAGEMENT
Rank #13
1.63%
- Shares
- 513.29K
- Change
- +17.62K
- Change %
- +3.56%
- Filing
- Mar 31, 2026
Increased
GILDER GAGNON HOWE & CO LLC
Rank #14
1.41%
- Shares
- 444.30K
- Change
- +126.35K
- Change %
- +39.74%
- Filing
- Mar 31, 2026
Increased
SILVERCREST ASSET MANAGEMENT GROUP LLC
Rank #15
1.09%
- Shares
- 344.25K
- Change
- +35.86K
- Change %
- +11.63%
- Filing
- Mar 31, 2026
Increased
D. E. SHAW & CO.
Rank #16
1.08%
- Shares
- 341.64K
- Change
- +51.35K
- Change %
- +17.69%
- Filing
- Mar 31, 2026
Increased
INVESCO LTD.
Rank #17
0.91%
- Shares
- 285.73K
- Change
- +257.51K
- Change %
- +9.13%
- Filing
- Mar 31, 2026
Increased
JANE STREET GROUP
Rank #18
0.88%
- Shares
- 277.05K
- Change
- +36.61K
- Change %
- +15.22%
- Filing
- Mar 31, 2026
Increased
RICE HALL JAMES & ASSOCIATES
Rank #19
0.86%
- Shares
- 272.25K
- Change
- -181.32K
- Change %
- -39.98%
- Filing
- Mar 31, 2026
Decreased
WALLEYE CAPITAL LLC
Rank #20
0.85%
- Shares
- 267.19K
- Change
- +262.48K
- Change %
- +55.76%
- Filing
- Mar 31, 2026
Increased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 7.42% | 2.34M | +49.24K Increased | +2.15% | Dec 31, 2025 | |
| 2 | 7.26% | 2.29M | +159.79K Increased | +7.51% | Mar 31, 2026 | |
| 3 | 6.80% | 2.14M | -365.28K Decreased | -14.56% | Mar 31, 2026 | |
| 4 | AWM INVESTMENT COMPANY | 5.06% | 1.59M | +57.20K Increased | +3.72% | Mar 31, 2026 |
| 5 | 4.28% | 1.35M | +1.31M Increased | +38.24% | Mar 31, 2026 | |
| 6 | 4.07% | 1.28M | +1.28M Initiated | — | Mar 31, 2026 | |
| 7 | 4.01% | 1.26M | +1.09M Increased | +6.17% | Mar 31, 2026 | |
| 8 | 3.18% | 1.00M | -289.72K Decreased | -22.45% | Mar 31, 2026 | |
| 9 | 2.91% | 917.88K | +917.88K Initiated | — | Mar 31, 2026 | |
| 10 | NEXT CENTURY GROWTH INVESTORS LLC | 2.40% | 754.74K | +202.23K Increased | +36.60% | Mar 31, 2026 |
| 11 | 2.30% | 725.71K | +40.02K Increased | +5.84% | Mar 31, 2026 | |
| 12 | 1.98% | 623.31K | -779 Decreased | -12.00% | Mar 31, 2026 | |
| 13 | WILLIAM BLAIR INVESTMENT MANAGEMENT | 1.63% | 513.29K | +17.62K Increased | +3.56% | Mar 31, 2026 |
| 14 | GILDER GAGNON HOWE & CO LLC | 1.41% | 444.30K | +126.35K Increased | +39.74% | Mar 31, 2026 |
| 15 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.09% | 344.25K | +35.86K Increased | +11.63% | Mar 31, 2026 |
| 16 | 1.08% | 341.64K | +51.35K Increased | +17.69% | Mar 31, 2026 | |
| 17 | 0.91% | 285.73K | +257.51K Increased | +9.13% | Mar 31, 2026 | |
| 18 | JANE STREET GROUP | 0.88% | 277.05K | +36.61K Increased | +15.22% | Mar 31, 2026 |
| 19 | RICE HALL JAMES & ASSOCIATES | 0.86% | 272.25K | -181.32K Decreased | -39.98% | Mar 31, 2026 |
| 20 | WALLEYE CAPITAL LLC | 0.85% | 267.19K | +262.48K Increased | +55.76% | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
Aehr Test Systems (AEHR) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
WIMMERS, DIDIER
Executive VP of R&D
- Shares
- 332
- % company
- <0.01%
- Price
- $114.59
- Value
- $38,044
Filed Jun 3, 2026
SIU, CHRIS
CFO
- Shares
- 350
- % company
- <0.01%
- Price
- $93.62
- Value
- $32,767
Filed Jun 1, 2026
SALAMONE, ALBERTO
EVP, PPBI BUSINESS
- Shares
- 204
- % company
- <0.01%
- Price
- $93.07
- Value
- $18,986
Filed May 1, 2026
SCOTT, GEOFFREY GATES
Director
- Shares
- 10.00K
- % company
- 0.03%
- Price
- Not reported
- Value
- Not reported
Filed Apr 29, 2026
RICHMOND, DONALD P. II
CTO
- Shares
- 102
- % company
- <0.01%
- Price
- $88.48
- Value
- $9,025
Filed Apr 27, 2026
ERICKSON, GAYN
Director, President and CEO
- Shares
- 851
- % company
- <0.01%
- Price
- $88.48
- Value
- $75,296
Filed Apr 27, 2026
ENGINEER, ADIL
Chief Operating Officer
- Shares
- 143
- % company
- <0.01%
- Price
- $88.48
- Value
- $12,653
Filed Apr 27, 2026
SPORCK, ALISTAIR N
VP Contactor Business Unit
- Shares
- 133
- % company
- <0.01%
- Price
- $88.48
- Value
- $11,768
Filed Apr 27, 2026
ROGERS, VERNON
Exec VP of Sales & Mktg.
- Shares
- 139
- % company
- <0.01%
- Price
- $88.48
- Value
- $12,299
Filed Apr 27, 2026
SPORCK, ALISTAIR N
VP Contactor Business Unit
- Shares
- 2.00K
- % company
- <0.01%
- Price
- $93.50
- Value
- $186,990
Filed Apr 22, 2026
POSEDEL, RHEA J
Director
- Shares
- 17.11K
- % company
- 0.05%
- Price
- $100.00
- Value
- $1,711,500
Filed Apr 22, 2026
POSEDEL, RHEA J
Director
- Shares
- 604
- % company
- <0.01%
- Price
- $95.00
- Value
- $57,380
Filed Apr 22, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | WIMMERS, DIDIER Executive VP of R&D | <0.01% | Sale to issuer | 332 | $114.59 | $38,044 | Jun 3, 2026 |
| 2 | SIU, CHRIS CFO | <0.01% | Sale to issuer | 350 | $93.62 | $32,767 | Jun 1, 2026 |
| 3 | SALAMONE, ALBERTO EVP, PPBI BUSINESS | <0.01% | Sale to issuer | 204 | $93.07 | $18,986 | May 1, 2026 |
| 4 | SCOTT, GEOFFREY GATES Director | 0.03% | Sale to issuer | 10.00K | Not reported | Not reported | Apr 29, 2026 |
| 5 | RICHMOND, DONALD P. II CTO | <0.01% | Sale to issuer | 102 | $88.48 | $9,025 | Apr 27, 2026 |
| 6 | ERICKSON, GAYN Director, President and CEO | <0.01% | Sale to issuer | 851 | $88.48 | $75,296 | Apr 27, 2026 |
| 7 | ENGINEER, ADIL Chief Operating Officer | <0.01% | Sale to issuer | 143 | $88.48 | $12,653 | Apr 27, 2026 |
| 8 | SPORCK, ALISTAIR N VP Contactor Business Unit | <0.01% | Sale to issuer | 133 | $88.48 | $11,768 | Apr 27, 2026 |
| 9 | ROGERS, VERNON Exec VP of Sales & Mktg. | <0.01% | Sale to issuer | 139 | $88.48 | $12,299 | Apr 27, 2026 |
| 10 | SPORCK, ALISTAIR N VP Contactor Business Unit | <0.01% | Sale to issuer | 2.00K | $93.50 | $186,990 | Apr 22, 2026 |
| 11 | POSEDEL, RHEA J Director | 0.05% | Sale to issuer | 17.11K | $100.00 | $1,711,500 | Apr 22, 2026 |
| 12 | POSEDEL, RHEA J Director | <0.01% | Sale to issuer | 604 | $95.00 | $57,380 | Apr 22, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest AEHR shareholders?
VANGUARD GROUP INC is the largest institutional holder in the loaded AEHR ownership dataset, with 2.34 million shares, or about 7.42% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of AEHR?
The current TECHi snapshot has 120 loaded institutional rows for Aehr Test Systems. 75 rows are marked increased or initiated, while 37 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see Aehr Test Systems insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for AEHR, with the latest insider filing dated Jun 3, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are AEHR insiders buying or selling?
The loaded AEHR Form 4 rows currently read Net selling: 109 sale rows and 0 purchase rows. Awards, gifts, conversions, and tax withholding are shown separately because they do not carry the same signal as open-market buying or selling.
Who is the most active AEHR insider in the loaded filings?
ERICKSON, GAYN is the most active insider by absolute share movement in the loaded AEHR rows, with 174,602 shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.