William Blair Investment Management
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William Blair Investment Management’s Chubb CB Stock Holding History

William Blair Investment Management’s Portfolio CB Stock Details CB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-267,172
Closed -$77.4M – 424
2025
Q2 		$77.4M Buy
267,172
+7,487
+3% +$2.15M 0.21% 117
2025
Q1 		$78.4M Buy
259,685
+73,640
+40% +$20.5M 0.22% 116
2024
Q4 		$51.4M Buy
186,045
+932
+0.5% +$265K 0.13% 153
2024
Q3 		$53.4M Buy
+185,113
New +$50.7M 0.13% 132

Other funds holding CB

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Berkshire Hathaway
Berkshire Hathaway Omaha, Nebraska $263B AUM 16.68% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
GQG Partners
GQG Partners Ft. Lauderdale, Florida $63.1B AUM 23.07% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

William Blair Investment Management's CB Position: Q3 2025 in Review

William Blair Investment Management sold out of Chubb (CB) in Q3 2025, closing a stake of 267,172 shares — an estimated $77.4M sold.

William Blair Investment Management first reported a position in CB in Q3 2024 and held it in 4 quarters. The position peaked at $78.4M in Q1 2025. 1,919 funds tracked by Wall St. Rank hold CB as of Q3 2025.

  • William Blair Investment Management reported no remaining Chubb position as of Q3 2025 after selling out during the quarter.
  • William Blair Investment Management sold 267,172 Chubb shares in Q3 2025, an estimated $77.4M.
  • William Blair Investment Management first reported a position in Chubb in Q3 2024 and held it in 4 quarters.
  • William Blair Investment Management's Chubb position peaked at $78.4M in Q1 2025.
  • 1,919 funds tracked by Wall St. Rank held Chubb as of Q3 2025.

Based on William Blair Investment Management's 13F filing for Q3 2025, filed 12 Nov 2025.