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Sierra Ocean’s White Mountains Insurance WTM Stock Holding History

Sierra Ocean’s Portfolio WTM Stock Details WTM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-12
Closed -$21.5K – 980
2025
Q2 		$21.5K Hold
12
– – 0.02% 312
2025
Q1 		$23.1K Buy
+12
New +$22.6K 0.02% 278

Other funds holding WTM

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RRAM
River Road Asset Management Louisville, Kentucky $8.99B AUM 12.83% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.84B AUM 6.92% 1-Year Est. Return
FMI
Fiduciary Management Inc Milwaukee, Wisconsin $8.06B AUM 6.78% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

Sierra Ocean's WTM Position: Q3 2025 in Review

Sierra Ocean sold out of White Mountains Insurance (WTM) in Q3 2025, closing a stake of 12 shares — an estimated $21.5K sold.

Sierra Ocean first reported a position in WTM in Q1 2025 and held it in 2 quarters. The position peaked at $23.1K in Q1 2025. 338 funds tracked by Wall St. Rank hold WTM as of Q3 2025.

  • Sierra Ocean reported no remaining White Mountains Insurance position as of Q3 2025 after selling out during the quarter.
  • Sierra Ocean sold 12 White Mountains Insurance shares in Q3 2025, an estimated $21.5K.
  • Sierra Ocean first reported a position in White Mountains Insurance in Q1 2025 and held it in 2 quarters.
  • Sierra Ocean's White Mountains Insurance position peaked at $23.1K in Q1 2025.
  • 338 funds tracked by Wall St. Rank held White Mountains Insurance as of Q3 2025.

Based on Sierra Ocean's 13F filing for Q3 2025, filed 7 Nov 2025.