VANGUARD GROUP INC
Rank #1
13.0%
- Shares
- 20.30M
- Change
- -1.12M
- Change %
- -5.23%
- Filing
- Dec 31, 2025
Decreased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NASDAQ · TECHNOLOGY · Holders
Teradyne Inc (TER) Institutional Ownership & Insider Trading History
Top TER institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Ownership read
TER insider sentiment: Net selling.
VANGUARD GROUP INC is the largest loaded institutional holder. 56 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
TER
Purchases—
Sales89.47K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
20.30M
VANGUARD GROUP INC
Insider stance
Net selling
$18.52M sold / — bought
Latest filing
May 22, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data feed
- Latest filing
- May 22, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 68
- 50 decreased in loaded rows
- Insider rows
- 120
- Market data feed
Top 120 institutional holders
Teradyne Inc (TER) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where the ownership feed supplies them.
BLACKROCK
Rank #2
10.4%
- Shares
- 16.31M
- Change
- +906.95K
- Change %
- +5.89%
- Filing
- Mar 31, 2026
Increased
VANGUARD CAPITAL MANAGEMENT LLC
Rank #3
6.51%
- Shares
- 10.18M
- Change
- +10.18M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #4
5.50%
- Shares
- 8.60M
- Change
- +8.60M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
STATE STREET CORP
Rank #5
4.46%
- Shares
- 6.97M
- Change
- -108.21K
- Change %
- -1.53%
- Filing
- Mar 31, 2026
Decreased
GEODE CAPITAL MANAGEMENT
Rank #6
2.80%
- Shares
- 4.37M
- Change
- +205.14K
- Change %
- +4.93%
- Filing
- Mar 31, 2026
Increased
FMR LLC
Rank #7
2.31%
- Shares
- 3.61M
- Change
- +1.16M
- Change %
- +47.57%
- Filing
- Mar 31, 2026
Increased
JPMORGAN CHASE & CO
Rank #8
1.84%
- Shares
- 2.87M
- Change
- -632.25K
- Change %
- -18.05%
- Filing
- Mar 31, 2026
Decreased
AMERIPRISE FINANCIAL INC
Rank #9
1.82%
- Shares
- 2.84M
- Change
- -1.65M
- Change %
- -36.66%
- Filing
- Mar 31, 2026
Decreased
ALKEON CAPITAL MANAGEMENT LLC
Rank #10
1.79%
- Shares
- 2.79M
- Change
- +356.60K
- Change %
- +14.66%
- Filing
- Mar 31, 2026
Increased
INVESCO LTD.
Rank #11
1.61%
- Shares
- 2.52M
- Change
- -430.81K
- Change %
- -14.60%
- Filing
- Mar 31, 2026
Decreased
VAN ECK ASSOCIATES CORP
Rank #12
1.59%
- Shares
- 2.48M
- Change
- +205.45K
- Change %
- +9.02%
- Filing
- Mar 31, 2026
Increased
POINT72 ASSET MANAGEMENT
Rank #13
1.46%
- Shares
- 2.28M
- Change
- -531.85K
- Change %
- -18.88%
- Filing
- Mar 31, 2026
Decreased
AQR CAPITAL MANAGEMENT LLC
Rank #14
1.40%
- Shares
- 2.18M
- Change
- +900.12K
- Change %
- +70.15%
- Filing
- Mar 31, 2026
Increased
MORGAN STANLEY
Rank #15
1.39%
- Shares
- 2.17M
- Change
- -269.94K
- Change %
- -11.05%
- Filing
- Mar 31, 2026
Decreased
PRICE T ROWE ASSOCIATES INC
Rank #16
1.36%
- Shares
- 2.12M
- Change
- -2.08M
- Change %
- -49.59%
- Filing
- Mar 31, 2026
Decreased
NORGES BANK
Rank #17
1.32%
- Shares
- 2.06M
- Change
- +360.33K
- Change %
- +21.20%
- Filing
- Dec 31, 2025
Increased
UBS AM
Rank #18
1.26%
- Shares
- 1.97M
- Change
- +396.23K
- Change %
- +25.25%
- Filing
- Mar 31, 2026
Increased
LONE PINE CAPITAL LLC
Rank #19
1.20%
- Shares
- 1.87M
- Change
- +1.87M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
SUMITOMO MITSUI TRUST GROUP
Rank #20
1.09%
- Shares
- 1.70M
- Change
- -549.85K
- Change %
- -24.40%
- Filing
- Mar 31, 2026
Decreased
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 13.0% | 20.30M | -1.12M Decreased | -5.23% | Dec 31, 2025 | |
| 2 | 10.4% | 16.31M | +906.95K Increased | +5.89% | Mar 31, 2026 | |
| 3 | 6.51% | 10.18M | +10.18M Initiated | — | Mar 31, 2026 | |
| 4 | 5.50% | 8.60M | +8.60M Initiated | — | Mar 31, 2026 | |
| 5 | 4.46% | 6.97M | -108.21K Decreased | -1.53% | Mar 31, 2026 | |
| 6 | 2.80% | 4.37M | +205.14K Increased | +4.93% | Mar 31, 2026 | |
| 7 | 2.31% | 3.61M | +1.16M Increased | +47.57% | Mar 31, 2026 | |
| 8 | 1.84% | 2.87M | -632.25K Decreased | -18.05% | Mar 31, 2026 | |
| 9 | AMERIPRISE FINANCIAL INC | 1.82% | 2.84M | -1.65M Decreased | -36.66% | Mar 31, 2026 |
| 10 | ALKEON CAPITAL MANAGEMENT LLC | 1.79% | 2.79M | +356.60K Increased | +14.66% | Mar 31, 2026 |
| 11 | 1.61% | 2.52M | -430.81K Decreased | -14.60% | Mar 31, 2026 | |
| 12 | VAN ECK ASSOCIATES CORP | 1.59% | 2.48M | +205.45K Increased | +9.02% | Mar 31, 2026 |
| 13 | POINT72 ASSET MANAGEMENT | 1.46% | 2.28M | -531.85K Decreased | -18.88% | Mar 31, 2026 |
| 14 | AQR CAPITAL MANAGEMENT LLC | 1.40% | 2.18M | +900.12K Increased | +70.15% | Mar 31, 2026 |
| 15 | 1.39% | 2.17M | -269.94K Decreased | -11.05% | Mar 31, 2026 | |
| 16 | 1.36% | 2.12M | -2.08M Decreased | -49.59% | Mar 31, 2026 | |
| 17 | 1.32% | 2.06M | +360.33K Increased | +21.20% | Dec 31, 2025 | |
| 18 | 1.26% | 1.97M | +396.23K Increased | +25.25% | Mar 31, 2026 | |
| 19 | LONE PINE CAPITAL LLC | 1.20% | 1.87M | +1.87M Initiated | — | Mar 31, 2026 |
| 20 | SUMITOMO MITSUI TRUST GROUP | 1.09% | 1.70M | -549.85K Decreased | -24.40% | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
Teradyne Inc (TER) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
POULIN, SHANNON JOHN
President, Semiconductor Test
- Shares
- 656
- % company
- <0.01%
- Price
- $355.00
- Value
- $232,880
Filed May 22, 2026
MATZ, MARILYN
Director
- Shares
- 400
- % company
- <0.01%
- Price
- $350.00
- Value
- $140,000
Filed May 21, 2026
POULIN, SHANNON JOHN
President, Semiconductor Test
- Shares
- 1.01K
- % company
- <0.01%
- Price
- $345.37
- Value
- $348,133
Filed May 21, 2026
POULIN, SHANNON JOHN
President, Semiconductor Test
- Shares
- 2.84K
- % company
- <0.01%
- Price
- $82.61
- Value
- $234,860
Filed May 21, 2026
POULIN, SHANNON JOHN
President, Semiconductor Test
- Shares
- 1.53K
- % company
- <0.01%
- Price
- $345.98
- Value
- $529,695
Filed May 21, 2026
POULIN, SHANNON JOHN
President, Semiconductor Test
- Shares
- 2.84K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 21, 2026
SMITH, GREGORY STEPHEN
Director, President and CEO
- Shares
- 8.60K
- % company
- <0.01%
- Price
- $338.98
- Value
- $2,914,211
Filed May 15, 2026
MATZ, MARILYN
Director
- Shares
- 800
- % company
- <0.01%
- Price
- $338.98
- Value
- $271,184
Filed May 15, 2026
SMITH, GREGORY STEPHEN
Director, President and CEO
- Shares
- 4.60K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
SMITH, GREGORY STEPHEN
Director, President and CEO
- Shares
- 4.60K
- % company
- <0.01%
- Price
- $72.10
- Value
- $331,444
Filed May 15, 2026
MATZ, MARILYN
Director
- Shares
- 668
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
MADDOCK, ERNEST E
Director
- Shares
- 668
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | POULIN, SHANNON JOHN President, Semiconductor Test | <0.01% | Sale to issuer | 656 | $355.00 | $232,880 | May 22, 2026 |
| 2 | MATZ, MARILYN Director | <0.01% | Sale to issuer | 400 | $350.00 | $140,000 | May 21, 2026 |
| 3 | POULIN, SHANNON JOHN President, Semiconductor Test | <0.01% | Sale to issuer | 1.01K | $345.37 | $348,133 | May 21, 2026 |
| 4 | POULIN, SHANNON JOHN President, Semiconductor Test | <0.01% | Award / grant | 2.84K | $82.61 | $234,860 | May 21, 2026 |
| 5 | POULIN, SHANNON JOHN President, Semiconductor Test | <0.01% | Sale to issuer | 1.53K | $345.98 | $529,695 | May 21, 2026 |
| 6 | POULIN, SHANNON JOHN President, Semiconductor Test | <0.01% | Sale to issuer | 2.84K | Not reported | Not reported | May 21, 2026 |
| 7 | SMITH, GREGORY STEPHEN Director, President and CEO | <0.01% | Sale to issuer | 8.60K | $338.98 | $2,914,211 | May 15, 2026 |
| 8 | MATZ, MARILYN Director | <0.01% | Sale to issuer | 800 | $338.98 | $271,184 | May 15, 2026 |
| 9 | SMITH, GREGORY STEPHEN Director, President and CEO | <0.01% | Sale to issuer | 4.60K | Not reported | Not reported | May 15, 2026 |
| 10 | SMITH, GREGORY STEPHEN Director, President and CEO | <0.01% | Award / grant | 4.60K | $72.10 | $331,444 | May 15, 2026 |
| 11 | MATZ, MARILYN Director | <0.01% | Award / grant | 668 | No cash value | No cash value | May 8, 2026 |
| 12 | MADDOCK, ERNEST E Director | <0.01% | Award / grant | 668 | No cash value | No cash value | May 8, 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 TER shareholders?
VANGUARD GROUP INC is the largest institutional holder in the loaded TER ownership feed, with 20.30 million shares, or about 12.99% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of TER?
The current TECHi snapshot has 120 loaded institutional rows for Teradyne Inc. 68 rows are marked increased or initiated, while 50 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see Teradyne Inc insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for TER, with the latest insider filing dated May 22, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are TER insiders buying or selling?
The loaded TER Form 4 rows currently read Net selling: 56 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 TER insider in the loaded filings?
SMITH, GREGORY STEPHEN is the most active insider by absolute share movement in the loaded TER rows, with 204,665 shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.