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Portolan Capital Management’s Waters Corp WAT Stock Holding History

Portolan Capital Management’s Portfolio WAT Stock Details WAT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-22,379
Closed -$8.5M – 180
2025
Q4 		$8.5M Buy
+22,379
New +$8.23M 0.46% 76

Other funds holding WAT

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Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fundsmith LLP
Fundsmith LLP London, United Kingdom $13.6B AUM 7.6% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Portolan Capital Management's WAT Position: Q1 2026 in Review

Portolan Capital Management sold out of Waters Corp (WAT) in Q1 2026, closing a stake of 22,379 shares — an estimated $8.5M sold.

Portolan Capital Management first reported a position in WAT in Q4 2025 and held it in 1 quarter. The position peaked at $8.5M in Q4 2025. 1,176 funds tracked by Wall St. Rank hold WAT as of Q1 2026.

  • Portolan Capital Management reported no remaining Waters Corp position as of Q1 2026 after selling out during the quarter.
  • Portolan Capital Management sold 22,379 Waters Corp shares in Q1 2026, an estimated $8.5M.
  • Portolan Capital Management first reported a position in Waters Corp in Q4 2025 and held it in 1 quarter.
  • Portolan Capital Management's Waters Corp position peaked at $8.5M in Q4 2025.
  • 1,176 funds tracked by Wall St. Rank held Waters Corp as of Q1 2026.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.