TER
TERADYNE (TER)
NASDAQ
$448.38+$32.59 (+7.84%)
Price as of Oct 02, 2026 3:10 PM EDT
  • $65.0B
    Market Cap
  • 188.25%
    1-Year Change
  • Semiconductor Equipment & Materials
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
12.98%
20.3M
-1.1M (-5.52%)
Dec 31, 2025
BLACKROCK, INC.
12.43%
19.4M
+3.1M (+16.11%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
10.14%
15.9M
+225,735 (+1.42%)
Dec 31, 2024
BLACKROCK INC.
9.32%
14.6M
-137,861 (-0.95%)
Jun 30, 2024
VANGUARD CAPITAL MANAGEMENT LLC
6.54%
10.2M
+49,207 (+0.48%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
5.52%
8.6M
+30,864 (+0.36%)
Jun 30, 2026
N/A
5.52%
8.6M
+30,864 (+0.36%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions2.2B (71.19%)
  • Mutual Funds900.5M (28.77%)
  • Insiders1.5M (0.05%)
  • Other0 (0.00%)

Insider Transactions

  • 0.05% (1.5M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $238.7M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
JOHNSON MERCEDES
Sell
Oct 01, 2026
$67,284.30
167
$402.90
6,197
Herweck Peter
Other
Sep 25, 2026
$0.00
4
$0.00
16,282
MADDOCK ERNEST E
Other
Sep 25, 2026
$0.00
2
$0.00
10,269
TUFANO PAUL J
Other
Sep 25, 2026
$0.00
19
$0.00
66,008
Herweck Peter
Award
Sep 24, 2026
$0.00
77
$0.00
16,278
TUFANO PAUL J
Award
Sep 24, 2026
$0.00
141
$0.00
65,989
MATZ MARILYN
Sell
Sep 17, 2026
$140,444.00
400
$351.11
13,841
Smith Gregory Stephen
President and CEO
Sell
Sep 15, 2026
$1.4M
4,000
$337.83
108,495
Smith Gregory Stephen
President and CEO
Sell
Aug 17, 2026
$1.7M
4,000
$425.00
112,495
MATZ MARILYN
Sell
Aug 17, 2026
$510,000.00
1,200
$425.00
15,041
Smith Gregory Stephen
President and CEO
Sell
Jul 15, 2026
$1.4M
4,000
$356.31
116,495
MATZ MARILYN
Sell
Jul 15, 2026
$427,572.00
1,200
$356.31
16,241
JOHNSON MERCEDES
Sell
Jul 01, 2026
$76,820.00
167
$460.00
6,697
TUFANO PAUL J
Award
Jun 25, 2026
$0.00
116
$0.00
65,848
Henry Andrew Chisholm
Award
Jun 25, 2026
$0.00
52
$0.00
2,927
Herweck Peter
Award
Jun 25, 2026
$0.00
63
$0.00
16,201
Smith Gregory Stephen
President and CEO
Sell
Jun 15, 2026
$1.7M
4,000
$423.03
120,470
MADDOCK ERNEST E
Other
Jun 12, 2026
$0.00
2
$0.00
10,267
Mills Regan
President, Product Test
Sell
Apr 08, 2026
$5,474.72
16
$342.17
11,399
JOHNSON MERCEDES
Sell
Apr 06, 2026
$195,125.00
625
$312.20
6,363
Mills Regan
President, Product Test
Sell
Apr 02, 2026
$73,301.76
252
$290.88
11,415
Mills Regan
President, Product Test
In Kind
Apr 01, 2026
$69,308.40
222
$312.20
11,667
Herweck Peter
Award
Mar 26, 2026
$0.00
92
$0.00
15,466
TUFANO PAUL J
Award
Mar 26, 2026
$0.00
159
$0.00
65,045
Henry Andrew Chisholm
Award
Mar 26, 2026
$0.00
75
$0.00
2,207
MADDOCK ERNEST E
Other
Mar 13, 2026
$0.00
2
$0.00
9,597
Herweck Peter
Other
Mar 13, 2026
$0.00
5
$0.00
15,374
JOHNSON MERCEDES
Sell
Mar 05, 2026
$187,000.00
625
$299.20
6,988
Mills Regan
President, Product Test
Sell
Feb 25, 2026
$262,301.56
788
$332.87
11,889
Smith Gregory Stephen
President and CEO
Award
Feb 04, 2026
$0.00
11,810
$0.00
11,810