TERADYNE INC (TER) Institutional Ownership Changes & 13F Activity

TERADYNE INC (TER) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Lone Pine Capital, ARK Invest, Renaissance Technologies LLC, Parnassus Endeavor Fund, and Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Lone Pine CapitalBuy1,872,8761,872,876$555,232,819
Q1 2026ARK InvestSell-1,111,1341,245,122$369,128,978
Q1 2026Renaissance Technologies LLCBuy163,600164,900$48,886,254
Q1 2026Parnassus Endeavor FundSell-67,37581,452$24,147,260
Q1 2026Sequoia Financial AdvisorsBuy1,6519,001$2,668,448
Q4 2025ARK InvestSell-366,0712,356,256$456,077,004
Q4 2025Renaissance Technologies LLCSell-209,2001,300$251,628
Q4 2025Parnassus Endeavor FundSell-81,581148,827$28,806,954
Q4 2025Sequoia Financial AdvisorsBuy2,1397,350$1,422,659
Q3 2025Renaissance Technologies LLCSell-680,600210,500$28,973,220
Q3 2025ARK InvestBuy548,1402,722,327$374,701,066
Q3 2025Parnassus Endeavor FundSell-2,527230,408$31,713,357
Q3 2025Sequoia Financial AdvisorsBuy6265,211$717,208
Q2 2025Renaissance Technologies LLCBuy425,439891,100$80,127,712
Q2 2025ARK InvestSell-69,4032,174,187$195,502,875
Q2 2025Parnassus Endeavor FundSell-9,133232,935$20,945,515
Q2 2025Sequoia Financial AdvisorsBuy1,9394,585$412,302
Q1 2025Renaissance Technologies LLCBuy405,410465,661$38,463,599
Q1 2025ARK InvestBuy320,5802,243,590$185,320,562
Q1 2025Sequoia Financial AdvisorsSell-4412,646$218,539
Q4 2024ARK InvestBuy390,3971,923,010$242,145,436
Q4 2024Renaissance Technologies LLCSell-176,84960,251$7,586,806
Q4 2024Parnassus Endeavor FundBuy18,733242,068$30,481,203
Q4 2024Sequoia Financial AdvisorsSell-1953,087$388,752
Q3 2024ARK InvestSell-60,2711,532,613$205,262,908
Q3 2024Parnassus Endeavor FundSell-52,317223,335$29,911,257
Q3 2024Sequoia Financial AdvisorsBuy2543,282$439,511
Q2 2024ARK InvestSell-169,3111,592,884$236,208,825
Q2 2024Sequoia Financial AdvisorsBuy2003,028$449,012
Q1 2024ARK InvestBuy261,7391,762,195$198,828,414

Frequently asked questions about TER activity

  • Which institutional owners are buying TER?

    Institutional owners buying TER include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in TER activity?

    "Buy" means an investor increased their reported position in TER compared to the prior reporting period. This reflects growing exposure to TERADYNE INC (TER) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in TER increasing?

    Institutional interest in TER can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

Related TER insights