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
Q1 2018FundsmithBuy3,2774,368,590$867,820
Q1 2018Bares Capital ManagementBuy1,541747,260$148,443
Q4 2017Jensen Investment ManagementSell-195,5661,004,636$194,086
Q4 2017Renaissance Technologies LLCBuy530,9491,429,049$276,078
Q4 2017FundsmithBuy9,5574,365,313$843,335
Q4 2017Bares Capital ManagementBuy16,771745,719$144,065
Q3 2017Jensen Investment ManagementSell-5,4601,200,202$215,460
Q3 2017Renaissance Technologies LLCBuy371,700898,100$161,227
Q3 2017FundsmithBuy521,8014,355,756$778,548
Q3 2017Bares Capital ManagementBuy4,663728,948$130,861
Q2 2017Jensen Investment ManagementSell-37,6801,205,662$221,649
Q2 2017Renaissance Technologies LLCBuy359,000526,400$96,773
Q2 2017FundsmithBuy401,4203,833,955$704,834
Q2 2017Bares Capital ManagementBuy3,461724,285$133,153
Q1 2017Jensen Investment ManagementSell-1151,243,342$194,347
Q1 2017Renaissance Technologies LLCSell-27,900167,400$26,166
Q1 2017FundsmithBuy349,1783,432,535$536,540
Q1 2017Bares Capital ManagementBuy126,728720,824$112,672
Q4 2016Jensen Investment ManagementBuy243,6351,243,457$167,108
Q4 2016Renaissance Technologies LLCBuy175,100195,300$26,246
Q4 2016FundsmithBuy52,9973,083,357$414,711
Q4 2016Bares Capital ManagementBuy21,543594,096$79,841
Q3 2016Jensen Investment ManagementSell-222,303999,822$158,462
Q3 2016Renaissance Technologies LLCSell-149,00020,200$3,201
Q3 2016FundsmithBuy589,0423,030,360$480,282
Q3 2016Bares Capital ManagementBuy26,373572,553$90,744
Q2 2016Jensen Investment ManagementSell-13,5501,222,125$171,892
Q2 2016FundsmithBuy973,7882,441,318$343,371
Q1 2016Jensen Investment ManagementSell-76,8801,235,675$163,010
Q1 2016Renaissance Technologies LLCSell-127,496169,200$22,321

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.