WATERS CORP (WAT) Stock Institutional Trading Activity


WATERS CORP (WAT) 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 Fundsmith, Jensen Investment Management, Fundsmith Investment Services, AKO Capital, 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
Q2 2020Renaissance Technologies LLCBuy21,500101,600$18,329
Q2 2020FundsmithSell-861,2453,893,805$702,442
Q1 2020Jensen Investment ManagementSell-188,82457,148$10,404
Q1 2020FundsmithSell-351,6164,755,050$865,657
Q4 2019Jensen Investment ManagementSell-80,710245,972$57,471
Q4 2019FundsmithSell-16,2015,106,666$1,193,173
Q3 2019Jensen Investment ManagementSell-119,955326,682$72,925
Q3 2019Renaissance Technologies LLCSell-397,82580,100$17,881
Q3 2019FundsmithBuy8,8615,122,867$1,143,578
Q2 2019Jensen Investment ManagementBuy5,976446,637$96,134
Q2 2019Renaissance Technologies LLCSell-106,800477,925$102,869
Q2 2019FundsmithBuy87,2495,114,006$1,100,739
Q1 2019Jensen Investment ManagementSell-611,860440,661$110,919
Q1 2019Renaissance Technologies LLCSell-171,400584,725$147,181
Q1 2019FundsmithBuy93,4305,026,757$1,265,285
Q4 2018Jensen Investment ManagementSell-2,4851,052,521$198,558
Q4 2018Renaissance Technologies LLCSell-168,075756,125$142,643
Q4 2018FundsmithSell-93,2324,933,327$960,420
Q4 2018Bares Capital ManagementBuy1,096900,685$169,914
Q3 2018Jensen Investment ManagementSell-2,1451,055,006$205,389
Q3 2018Renaissance Technologies LLCSell-340,600924,200$179,923
Q3 2018FundsmithBuy297,5655,026,559$978,571
Q3 2018Bares Capital ManagementBuy118,126899,589$175,132
Q2 2018Jensen Investment ManagementBuy52,8401,057,151$204,654
Q2 2018Sequoia FundSell-1,1399,316$1,803
Q2 2018FundsmithBuy360,4044,728,994$915,485
Q2 2018Bares Capital ManagementBuy34,203781,463$151,283
Q1 2018Jensen Investment ManagementSell-3251,004,311$199,506
Q1 2018Sequoia FundBuy10,45510,455$2,076
Q1 2018Renaissance Technologies LLCSell-164,2491,264,800$251,253

Frequently asked questions about WAT activity

  • Which institutional owners are buying WAT?

    Institutional owners buying WAT 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 WAT activity?

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

  • Is institutional interest in WAT increasing?

    Institutional interest in WAT 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.