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Quadrature Capital’s White Mountains Insurance WTM Stock Holding History

Quadrature Capital’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
2026
Q2 		$1.78M Sell
859
-354
-29% -$758K 0.02% 545
2026
Q1 		$2.66M Buy
1,213
+853
+237% +$1.83M 0.03% 331
2025
Q4 		$748K Buy
+360
New +$704K 0.01% 592
2025
Q3 		– Sell
-548
Closed -$983K – 1549
2025
Q2 		$983K Buy
548
+254
+86% +$452K 0.02% 414
2025
Q1 		$568K Buy
+294
New +$553K 0.01% 554
2022
Q3 		– Sell
-1,449
Closed -$1.81M – 1116
2022
Q2 		$1.81M Buy
+1,449
New +$1.68M 0.08% 232
2017
Q2 		– Sell
-800
Closed -$704K – 803
2017
Q1 		$704K Hold
800
– – 0.05% 346
2016
Q4 		$672K Buy
+800
New +$670K 0.02% 507

Other funds holding WTM

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RRAM
River Road Asset Management Louisville, Kentucky $8.99B AUM 12.83% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.65B AUM 9.66% 1-Year Est. Return
WCM
Wallace Capital Management Dallas, Texas $912M AUM 21.45% 1-Year Est. Return
FMI
Fiduciary Management Inc Milwaukee, Wisconsin $7.03B AUM 11.68% 1-Year Est. Return

Quadrature Capital's WTM Position: Q2 2026 in Review

Quadrature Capital reduced its White Mountains Insurance (WTM) stake by 29% in Q2 2026, selling an estimated $758K and leaving 859 shares worth $1.78M. The position accounts for 0.02% of the portfolio, ranked #545.

Quadrature Capital first reported a position in WTM in Q4 2016 and has held it in 8 quarters since. The position peaked at $2.66M in Q1 2026. 356 funds tracked by Wall St. Rank hold WTM as of Q2 2026.

  • Quadrature Capital held 859 shares of White Mountains Insurance worth $1.78M as of Q2 2026.
  • Quadrature Capital sold 354 White Mountains Insurance shares in Q2 2026, an estimated $758K.
  • White Mountains Insurance made up 0.02% of Quadrature Capital's portfolio in Q2 2026, its #545 holding.
  • Quadrature Capital first reported a position in White Mountains Insurance in Q4 2016 and has held it in 8 quarters since.
  • Quadrature Capital's White Mountains Insurance position peaked at $2.66M in Q1 2026.
  • 356 funds tracked by Wall St. Rank held White Mountains Insurance as of Q2 2026.

Based on Quadrature Capital's 13F filing for Q2 2026, filed 7 Aug 2026.