KLA CORP (KLAC) Stock Institutional Trading Activity


KLA CORP (KLAC) 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 Jensen Investment Management, Renaissance Technologies LLC, Parnassus Endeavor Fund, Torray Fund, and Sequoia Financial Advisors. 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 2018Renaissance Technologies LLCSell-221,332389,490$34,855
Q3 2018Renaissance Technologies LLCBuy511,622610,822$62,127
Q2 2018Parnassus Endeavor FundSell-667,9751,505,015$154,309
Q1 2018Renaissance Technologies LLCSell-463,88499,200$10,814
Q1 2018Parnassus Endeavor FundSell-1,239,2872,172,990$236,878
Q4 2017Renaissance Technologies LLCSell-7,700563,084$59,163
Q4 2017Parnassus Endeavor FundBuy1,7133,412,277$358,528
Q3 2017Renaissance Technologies LLCBuy536,384570,784$60,503
Q3 2017Parnassus Endeavor FundSell-53,6883,410,564$361,520
Q2 2017Renaissance Technologies LLCSell-430,38434,400$3,148
Q2 2017Parnassus Endeavor FundBuy9,1773,464,252$317,014
Q1 2017Parnassus Endeavor FundBuy6,1583,455,075$320,116
Q4 2016Renaissance Technologies LLCSell-858,100464,784$36,569
Q4 2016Parnassus Endeavor FundBuy1,769,5023,448,917$271,361
Q3 2016Renaissance Technologies LLCBuy647,7001,322,884$92,218
Q3 2016Parnassus Endeavor FundBuy1,679,4151,679,415$117,072
Q2 2016Renaissance Technologies LLCBuy97,600675,184$49,457
Q1 2016Renaissance Technologies LLCBuy476,300577,584$42,054
Q4 2015Renaissance Technologies LLCSell-134,200101,284$7,024
Q3 2015Renaissance Technologies LLCBuy81,484235,484$11,774
Q2 2014Renaissance Technologies LLCSell-780,300154,000$11,187
Q1 2014Renaissance Technologies LLCSell-433,200934,300$64,598
Q4 2013Renaissance Technologies LLCSell-598,9841,367,500$88,149
Q3 2013Renaissance Technologies LLCBuy493,8841,966,484$119,661
Q2 2013Renaissance Technologies LLCBuy1,472,6001,472,600$82,068

Frequently asked questions about KLAC activity

  • Which institutional owners are buying KLAC?

    Institutional owners buying KLAC 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 KLAC activity?

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

  • Is institutional interest in KLAC increasing?

    Institutional interest in KLAC 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.