Stock Ownership/WAT

WATERS CORP (WAT): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in WAT · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
36
13F filers
Aggregate Value
$3.9B
Across holders
Last Price
$410.75
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity19 increased17 reduced2 exited
Full exits: FRED ALGER MANAGEMENT, LLC, Man Group plc
Institutional Holders of WAT
↗
36 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Fundsmith LLP
CIK 0001569205
Institutional Manager2.27M$852.7M22.1%6.2%Reduced$-352.0MQ2 2026
VIKING GLOBAL INVESTORS LP
CIK 0001103804
Hedge Fund1.66M$623.4M16.2%1.8%Added+$152.1MQ2 2026
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager1.34M$500.7M13.0%0.8%Reduced$-659.5MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund949K$355.8M9.2%0.2%Reduced$-362.0MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund895K$335.5M8.7%0.1%Added+$324.3MQ2 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund848K$317.9M8.2%0.7%Reduced$-26.0MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund581K$218.0M5.6%0.2%Added+$47.8MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund444K$166.6M4.3%0.2%Added+$166.1MQ2 2026
XN LP
CIK 0001756558
Hedge Fund193K$72.4M1.9%1.9%Added—Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund177K$66.5M1.7%0.0%Added+$10.8MQ2 2026
Fundsmith LLPReduced
Institutional Manager
$852.7M· 22.1% of total· 6.2% port· 2.27M sh· $-352.0M QoQ· Q2 2026
VIKING GLOBAL INVESTORS LPAdded
Hedge Fund
$623.4M· 16.2% of total· 1.8% port· 1.66M sh· +$152.1M QoQ· Q2 2026
First Eagle Investment Management, LLCReduced
Institutional Manager
$500.7M· 13.0% of total· 0.8% port· 1.34M sh· $-659.5M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$355.8M· 9.2% of total· 0.2% port· 949K sh· $-362.0M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$335.5M· 8.7% of total· 0.1% port· 895K sh· +$324.3M QoQ· Q2 2026
Holocene Advisors, LPReduced
Hedge Fund
$317.9M· 8.2% of total· 0.7% port· 848K sh· $-26.0M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$218.0M· 5.6% of total· 0.2% port· 581K sh· +$47.8M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$166.6M· 4.3% of total· 0.2% port· 444K sh· +$166.1M QoQ· Q2 2026
XN LPAdded
Hedge Fund
$72.4M· 1.9% of total· 1.9% port· 193K sh· — QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$66.5M· 1.7% of total· 0.0% port· 177K sh· +$10.8M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$64.1M· 1.7% of total· 0.1% port· 171K sh· $-115.3M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Added
Hedge Fund
$54.2M· 1.4% of total· 0.1% port· 145K sh· +$21.3M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$51.9M· 1.3% of total· 0.1% port· 138K sh· +$51.3M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$50.9M· 1.3% of total· 0.0% port· 136K sh· +$50.8M QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$24.5M· 0.6% of total· 0.1% port· 65K sh· $-2.3M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$19.4M· 0.5% of total· 0.0% port· 53K sh· +$19.0M QoQ· Q2 2026
ORBIMED ADVISORS LLCAdded
Hedge Fund
$15.1M· 0.4% of total· 0.3% port· 40K sh· — QoQ· Q2 2026
PRIMECAP MANAGEMENT CO/CA/Reduced
Institutional Manager
$14.5M· 0.4% of total· 0.0% port· 39K sh· $-75K QoQ· Q2 2026
PineBridge Investments, L.P.Reduced
Hedge Fund
$14.2M· 0.4% of total· 0.1% port· 47K sh· $-419K QoQ· Q3 2025
Verition Fund Management LLCAdded
Hedge Fund
$9.4M· 0.2% of total· 0.0% port· 25K sh· +$2.3M QoQ· Q2 2026
HARRIS ASSOCIATES L PReduced
Institutional Manager
$6.9M· 0.2% of total· 0.0% port· 18K sh· $-101.4M QoQ· Q2 2026
Ancora Advisors, LLCAdded
Hedge Fund
$6.2M· 0.2% of total· 0.1% port· 17K sh· +$5.9M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$4.0M· 0.1% of total· 0.0% port· 11K sh· $-920K QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$3.4M· 0.1% of total· 0.1% port· 9K sh· — QoQ· Q2 2026
Woodline Partners LPReduced
Hedge Fund
$2.6M· 0.1% of total· 0.0% port· 7K sh· $-37.9M QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$1.8M· 0.0% of total· 0.0% port· 5K sh· $-3.2M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$1.8M· 0.0% of total· 0.0% port· 5K sh· +$774K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$1.5M· 0.0% of total· 0.0% port· 4K sh· +$858K QoQ· Q2 2026
Schonfeld Strategic Advisors LLCReduced
Hedge Fund
$1.4M· 0.0% of total· 0.0% port· 4K sh· $-10.6M QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$619K· 0.0% of total· 0.0% port· 2K sh· +$11K QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$484K· 0.0% of total· 0.0% port· 1K sh· $-9K QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$315K· 0.0% of total· 0.0% port· 839 sh· — QoQ· Q2 2026
Hudson Bay Capital Management LPReduced
Hedge Fund
$300K· 0.0% of total· 0.0% port· 800 sh· $-11.0M QoQ· Q2 2026
Fisher Asset Management, LLCAdded
Institutional Manager
$224K· 0.0% of total· 0.0% port· 596 sh· — QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$203K· 0.0% of total· 0.0% port· 541 sh· — QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$20K· 0.0% of total· 0.0% port· 53 sh· $-18K QoQ· Q2 2026
1–10 of 36
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