TERADYNE INC (TER) Stock Institutional Trading Activity


TERADYNE INC (TER) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, ARK Invest, Parnassus Endeavor Fund, Sequoia Financial Advisors, and Meritage Group. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-209,2001,300$251,628
Q3 2025ARK InvestBuy548,1402,722,327$374,701,066
Q3 2025Sequoia Financial AdvisorsBuy6265,211$717,208
Q3 2025Renaissance Technologies LLCSell-680,600210,500$28,973,220
Q3 2025Parnassus Endeavor FundSell-2,527230,408$31,713,357
Q2 2025ARK InvestSell-69,4032,174,187$195,502,875
Q2 2025Sequoia Financial AdvisorsBuy1,9394,585$412,302
Q2 2025Parnassus Endeavor FundSell-9,133232,935$20,945,515
Q2 2025Renaissance Technologies LLCBuy425,439891,100$80,127,712
Q1 2025ARK InvestBuy320,5802,243,590$185,320,562
Q1 2025Sequoia Financial AdvisorsSell-4412,646$218,539
Q1 2025Renaissance Technologies LLCBuy405,410465,661$38,463,599
Q4 2024ARK InvestBuy390,3971,923,010$242,145,436
Q4 2024Sequoia Financial AdvisorsSell-1953,087$388,752
Q4 2024Renaissance Technologies LLCSell-176,84960,251$7,586,806
Q4 2024Parnassus Endeavor FundBuy18,733242,068$30,481,203
Q3 2024ARK InvestSell-60,2711,532,613$205,262,908
Q3 2024Sequoia Financial AdvisorsBuy2543,282$439,511
Q3 2024Parnassus Endeavor FundSell-52,317223,335$29,911,257
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
Q1 2024Sequoia Financial AdvisorsSell-3,0742,828$319,037
Q1 2024Parnassus Endeavor FundBuy108,540275,652$31,101,815
Q4 2023ARK InvestBuy77,6221,500,456$162,829,450
Q4 2023Meritage GroupBuy1112,218$241
Q4 2023Renaissance Technologies LLCSell-408,800237,100$25,730
Q4 2023Sequoia Financial AdvisorsBuy3,7605,902$640,534
Q3 2023ARK InvestBuy250,6141,422,834$142,937,884
Q3 2023Meritage GroupSell-1362,107$212

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.