Teradyne Ownership | Who Owns Teradyne?

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Teradyne Ownership Summary

Teradyne is owned by 100.76% institutional investors, 0.27% insiders. Vanguard group is the largest institutional shareholder, holding 12.52% of TER shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.19% of its assets in Teradyne shares.

TER Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Teradyne	100.76%	0.27%	-1.03%
Sector	Technology Stocks	144.02%	12.52%	-56.54%
Idea	Semiconductor Stocks List	62.65%	7.35%	30.01%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	20.41M	12.52%	$2.57B
Blackrock funding, inc. /de	15.76M	9.85%	$1.42B
Blackrock	14.56M	9.23%	$2.16B
Fmr	11.60M	7.12%	$1.46B
State street	6.99M	4.30%	$880.13M
Van eck associates	5.54M	3.46%	$498.39M
Jpmorgan chase	4.93M	3.02%	$620.67M
Ameriprise financial	4.83M	2.96%	$608.03M
Geode capital management	4.11M	2.52%	$515.67M
Primecap management co/ca/	3.05M	1.91%	$274.04M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Xxec	115.52K	8.35%	$10.39M
Andar capital management hk	60.00K	6.31%	$5.40M
Naples money management	34.39K	4.33%	$5.08M
Winslow asset management	144.86K	2.63%	$13.03M
Kempner capital management	45.90K	2.21%	$4.13M
Symmetry peak management	7.50K	1.96%	$1.11M
Carmel capital management	57.16K	1.73%	$5.14M
Nikko asset management americas	1.69M	1.52%	$151.94M
Icon advisers inc/co	71.09K	1.46%	$6.39M
Ark investment management	2.17M	1.43%	$195.50M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	2.15M	0.04%	2.15M
Amundi	1.81M	0.06%	1.30M
Primecap management co/ca/	3.05M	0.22%	1.13M
Ameriprise financial	4.83M	0.16%	1.07M
Rafferty asset management	2.17M	0.64%	856.54K

Top Sellers

Holder	Shares	% Assets	Change
Fmr	11.60M	0.09%	-3.75M
Aspex management (hk)	-	-	-3.23M
Jpmorgan chase	4.93M	0.05%	-1.88M
Balyasny asset management	-	-	-1.52M
Boston partners	-	-	-1.37M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	2.15M	0.04%	2.15M	$270.99M
Eagle asset management	434.48K	0.34%	434.48K	$64.20M
Hrt financial lp	203.44K	0.08%	203.44K	$18.29M
Glenmede investment management, lp	195.79K	0.09%	195.79K	$17.61M
Susquehanna portfolio strategies	189.40K	0.37%	189.40K	$17.03M

Sold Out

Holder	Change
Bokf, na	-1.00
Mendota financial group	-1.00
Tfc financial management	-1.00
Hhm wealth advisors	-3.00
Mcf advisors	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	751	-3.47%	161,181,800	4.98%	100	1.11%	368	-5.88%	270	8.00%
Mar 31, 2025	769	-5.18%	153,427,349	-3.81%	95	0.99%	386	-3.98%	249	-4.60%
Dec 31, 2024	385	-51.33%	49,492,126	-68.64%	30	0.32%	176	-57.07%	140	-40.93%
Sep 30, 2024	787	1.42%	157,666,102	-0.80%	96	0.95%	408	5.15%	235	-3.69%
Jun 30, 2024	776	9.91%	158,932,645	-0.32%	100	0.93%	388	18.65%	244	0.41%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	5.17M	3.19%	225.45K
Vanguard Total Stock Mkt Idx Inv	5.05M	3.17%	-116.04K
Vanguard Institutional 500 Index Trust	4.63M	2.89%	29.14K
Vanguard 500 Index Investor	3.97M	2.50%	-581.97K
VanEck Morningstar Wide Moat	3.46M	2.15%	-11.68K
VanEck Morningstar Wide Moat ETF	3.36M	2.10%	-1.28K
iShares Semiconductor ETF	2.88M	1.81%	78.46K
Columbia Seligman Tech & Info A	2.78M	1.75%	120.30K
Allspring Special Mid Cap Value Inst	2.69M	1.69%	145.50K
Columbia Seligman Technology Growth	2.66M	1.66%	156.50K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Sep 05, 2025	JOHNSON MERCEDES	-	Sell	$75.04K
Aug 12, 2025	Smith Gregory Stephen	President and CEO	Sell	$58.72K
Aug 05, 2025	JOHNSON MERCEDES	-	Sell	$66.25K
Jul 30, 2025	JOHNSON MERCEDES	-	Sell	$198.24K
Jul 30, 2025	Smith Gregory Stephen	President and CEO	Sell	$58.57K

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	-	4
2025 Q2	-	-
2025 Q1	-	16
2024 Q4	-	7
2024 Q3	-	5

TER Ownership FAQ

Who owns the most shares of Teradyne?

Teradyne’s largest shareholders are Vanguard group (20.41M shares, 12.52%), Blackrock funding, inc. /de (15.76M shares, 9.85%), and Blackrock (14.56M shares, 9.23%). Together, they hold 31.60% of Teradyne’s total shares outstanding.

Does Blackrock own Teradyne?

Yes, BlackRock owns 9.23% of Teradyne, totaling 14.56M shares as of Jun 2024. This represents 0.05% of BlackRock's total assets, with a market value of 2.16B$. In the last quarter, BlackRock decreased its holdings by -138K shares, a -0.94% change.

Who is Teradyne’s biggest shareholder by percentage of total assets invested?

Xxec is Teradyne’s biggest shareholder by percentage of total assets invested, with 8.35% of its assets in 115.52K Teradyne shares, valued at 10.39M$.

Who is the top mutual fund holder of Teradyne shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Teradyne shares, with 3.19% of its total shares outstanding invested in 5.17M Teradyne shares.

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