White Mountains Insurance Group’s State Street SPDR S&P 500 ETF Trust SPY Stock Holding History

White Mountains Insurance Group’s Portfolio SPY Stock Details SPY Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$169M	Hold	226,500	–	–	42.97%	2
2026 Q1	$147M	Buy	226,500 +181,500	+403%	+$123M	47.01%	2
2025 Q4	$30.7M	Buy	+45,000	New	+$30.4M	11.72%	2
2025 Q2	–	Sell	-216,197	Closed	-$121M	–	2
2025 Q1	$121M	Sell	216,197 -166,949	-44%	-$98.1M	42.3%	2
2024 Q4	$225M	Hold	383,146	–	–	52.69%	1
2024 Q3	$220M	Hold	383,146	–	–	40.47%	2
2024 Q2	$209M	Buy	383,146 +93,300	+32%	+$48.8M	47%	2
2024 Q1	$152M	Hold	289,846	–	–	24.56%	2
2023 Q4	$138M	Sell	289,846 -300,000	-51%	-$134M	35.09%	2
2023 Q3	$252M	Sell	589,846 -25,000	-4%	-$11.1M	57.18%	1
2023 Q2	$273M	Sell	614,846 -258,100	-30%	-$108M	53.63%	1
2023 Q1	$357M	Hold	872,946	–	–	58.48%	1
2022 Q4	$334M	Buy	872,946 +742,946	+571%	+$286M	66.45%	1
2022 Q3	$46.4M	Buy	+130,000	New	+$51.6M	23.85%	2

Other funds holding SPY

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

White Mountains Insurance Group's SPY Position: Q2 2026 in Review

White Mountains Insurance Group held its State Street SPDR S&P 500 ETF Trust (SPY) position steady in Q2 2026 at 226,500 shares worth $169M. The position accounts for 42.97% of the portfolio, ranked #2.

White Mountains Insurance Group first reported a position in SPY in Q3 2022 and has held it in 14 quarters since. The position peaked at $357M in Q1 2023. 4,658 funds tracked by Wall St. Rank hold SPY as of Q2 2026.

White Mountains Insurance Group held 226,500 shares of State Street SPDR S&P 500 ETF Trust worth $169M as of Q2 2026.
White Mountains Insurance Group left its State Street SPDR S&P 500 ETF Trust share count unchanged in Q2 2026.
State Street SPDR S&P 500 ETF Trust made up 42.97% of White Mountains Insurance Group's portfolio in Q2 2026, its #2 holding.
White Mountains Insurance Group first reported a position in State Street SPDR S&P 500 ETF Trust in Q3 2022 and has held it in 14 quarters since.
White Mountains Insurance Group's State Street SPDR S&P 500 ETF Trust position peaked at $357M in Q1 2023.
4,658 funds tracked by Wall St. Rank held State Street SPDR S&P 500 ETF Trust as of Q2 2026.

Based on White Mountains Insurance Group's 13F filing for Q2 2026, filed 12 Aug 2026.