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SPZCOWHITE MOUNTAINS INSURANCE GROUP LTD · WTMData at close 2026-07-29

Financials · Fire, Marine & Casualty Insurance · NYSE · CIK 776867 · FYE Dec 31 · Prices AT CLOSE 2026-07-29 (USD) — end-of-day, never a live or intraday quote

Last $2,150.34Day −2.37%Mkt cap $5.3BP/E (FY) 5.0×1Y +19.7%Off 52W high −7.8%Vol (1Y) 24.3%

Price2023-07-31 → 2026-07-29

WTM close: $1,547 on 2023-07-31 to $2,150 on 2026-07-29.

Daily closing price, split-adjusted to the current basis; 2.9y shown of 4,123 bars on file. Sampled to 240 points — every point is a real close, none averaged. Price return, not total return (dividends excluded). Source marketstack.

At a glance

Fair value (model)$2,661.42

Implied upside+23.8%

Valuation confidenceLOW

Short interest5.6% of sh out

Days to cover7.4d

13F net flow (QoQ)−5.74%

Top-10 13F concentration50.4%

Next report (est.)2026-08-05

Fair value, confidence and the reverse-DCF grade are the MATERIALIZED daily snapshot (the same columns the screener serves), not a live model run. Short interest is FINRA semi-monthly, settlement 2026-07-15. 13F figures are quarterly filings, period 2026-Q1 — a lower bound on true ownership.

Key fundamentalsFY 2025

P/E (FY)5.0×

Sales (TTM)$3.67B

Earnings (TTM)$1.05B

ROE22.3%

Trailing returns

YTD+3.5%

1Y+19.7%

3Y+39.0%

5Y+88.3%

10Y+161.8%

Since incept. (ann.)+12.0%

Price return through 2026-07-29 · series begins 2010-01-12. Only the windows this history actually covers are shown.

Risk

Ann. volatility (1Y)24.3%

Ann. volatility (3Y)23.7%

Sharpe (1Y)0.89

Sharpe (3Y)0.61

Max drawdown (1Y)−14.2%

Max drawdown (3Y)−18.0%

Beta (3Y vs SPY)0.32

Daily simple returns, annualized; drawdown is peak-to-trough within the window. Beta is the OLS slope of monthly returns on SPY's over three years. Each figure is labeled by the window it was measured over — they are not comparable across windows.

Top institutional holders13F 2026-Q1

Manager	Shares	Value	% sh out	QoQ
DIMENSIONAL FUND ADVISORS LP	156,618	$344M	6.35%	+0.0%
NEUBERGER BERMAN GROUP LLC	124,715	$274M	5.06%	−3.8%
River Road Asset Management, LLC	120,519	$265M	4.89%	−0.3%
VANGUARD PORTFOLIO MANAGEMENT LLC	115,553	$254M	4.68%	new
BlackRock, Inc.	113,328	$249M	4.59%	+0.9%
VANGUARD CAPITAL MANAGEMENT LLC	109,157	$240M	4.42%	new
COOKE & BIELER LP	104,857	$230M	4.25%	−1.6%
FULLER & THALER ASSET MANAGEMENT, INC.	104,561	$230M	4.24%	−51.7%

Reported 13F long positions as filed for 2026-Q1 (change vs 2025-Q4). 13F covers US-listed long equity only — the sum is a LOWER BOUND on institutional ownership, never a total.

Latest reported quarterslast report 2026-05-06

Period end	Reported	EPS	EPS YoY	Revenue	Rev YoY
2026-03-31	2026-05-06	−$12.59	−195.5%	$517.8M	−10.4%
2025-12-31	2026-02-06	—	—	$1.60B	+348.0%
2025-09-30	2025-11-06	$44.18	−36.6%	$864.2M	+3.0%
2025-06-30	2025-08-07	$47.75	—	$689.2M	+74.3%

EPS and revenue as reported in this filer's own XBRL — our extraction of the filings, not a vendor consensus feed, and never a beat/miss claim (we carry no estimates). YoY compares the same fiscal quarter a year earlier. Next report 2026-08-05 is ESTIMATED from filing cadence (median gap 91d) — not company-confirmed.

Basis & disclosures

End-of-day only. Every price on this sheet is a stored CLOSE — the last one is 2026-07-29. Nothing here is live, intraday or delayed-real-time, and the sheet does not update after it is printed.
Nothing is imputed. A figure that is not in the underlying filing or feed renders as “—”. We never fill a gap with an estimate, a peer median or a carried-forward value.
Mixed as-of dates by design. Prices are at the last close; fundamentals are at the latest reported fiscal period; 13F ownership is at the latest filed quarter (45+ days in arrears); short interest is the latest FINRA settlement. Each block states its own basis above.
Not investment advice. Model fair values, reverse-DCF grades and confidence labels are the output of published, disclosed methods on public filings — they are analysis, not a recommendation, a price target or a solicitation.
Fundamentals and ownership derive from SEC EDGAR (and equivalent foreign registers); prices from a licensed end-of-day vendor, shown under a neutral source label. Full methodology at spzco.com/methodology.