WHITE MOUNTAINS INSURANCE GROUP LTD

FundStock

CIK 0000776867 · Q2 2026

13F Equity AUM

$393.6M

+25.6% QoQ

Positions

0 QoQ

AUM Rank

#4,258

Top 49%

Skill Alpha (FF)

-17.4%/yr^ns

No Clear Edge

vs S&P -21.2%/yr (unadj.)

Quarters Tracked

~9 years

Portfolio Concentration

Top 5: 100.0%Top 10: 100.0%Top 20: 100.0%

MAX57.0%

SPY43.0%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Communication Services57.0%

Financial Services43.0%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 2Median: 50.00%Avg: 50.00%

0–0.5%

0(0.0%)

0.5–1%

0(0.0%)

1–3%

0(0.0%)

3–5%

0(0.0%)

5%+

2(100.0%)

Count of positions per weight bucket — (%) = combined portfolio weight

Loading summary cards...

Portfolio Overlap

Shared: 0Unique: 2vs 20 funds

0%Low

Fund positions

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

Loading overlap analysis...

Position Changes This Quarter

New0Increased0Decreased0Exited0

No position changes this quarter.

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

Loading position changes...

Holdings

Loading holdings...