White Mountains Insurance Group Ltd. (WTM)

Typically moves ±0.74% on earnings
EARNINGS ANALYTICS
event_upcoming Next Earnings: 2026-11-06 HIGH CONFIDENCE
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White Mountains Insurance Group Ltd. (WTM) has reported earnings 19 times since Aug 06, 2021. The stock moves an average of ±0.74% the day after reporting, closing higher 89.5% of the time. Its largest post-earnings gain was +2.75% (Feb 06, 2026) and its largest decline was -3.82% (May 06, 2026). The next earnings report is predicted for 2026-11-06 (high confidence).

Earnings reactions

How WTM moved on each past earnings report.

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Earnings Impact

Total Earnings

19

Avg Abs. Movement

±0.74%

Positive %

89.5%

Negative %

10.5%

Historical Earnings Statistics

Date Timing Earnings move SEC Filing
Aug 06, 2026 ☀ PRE +1.05% open_in_new
May 06, 2026 ☀ PRE -3.82% open_in_new
Feb 06, 2026 ☀ PRE +2.75% open_in_new
Nov 06, 2025 ☀ PRE -0.25% open_in_new
event

Earnings Count

19

Total earnings in dataset

trending_up

Avg Abs. Movement

±0.74%

Avg % price change on earnings

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SEC Filings

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Browse all SEC filings

account_balance

Institutional ownership

Holdings as of Jun 30, 2026 · SEC 13-F

View all 2 →
2
Funds holding
$898465
Total value held
Buying
2 added · 0 reduced
Allstate Corp
$897778 NEW BUY
Amalgamated Financial Corp.
$687 NEW BUY

SEC Filing Types

Recent SEC Filings

10 most recent
Form Date Filed View on EDGAR
4 20260831 open_in_new SEC.gov
3 20260827 open_in_new SEC.gov
4 20260827 open_in_new SEC.gov
8-K 20260827 open_in_new SEC.gov
N-PX 20260826 open_in_new SEC.gov
13F-HR 20260812 open_in_new SEC.gov
10-Q 20260806 open_in_new SEC.gov
8-K 20260806 open_in_new SEC.gov
11-K 20260630 open_in_new SEC.gov
8-K 20260605 open_in_new SEC.gov

Frequently asked about WTM earnings

When does White Mountains Insurance Group Ltd. report earnings next? expand_more

White Mountains Insurance Group Ltd. (WTM)'s next earnings date is predicted (high confidence) for 2026-11-06. This is a prediction based on its historical quarterly reporting pattern, not a company-confirmed date.

How much does WTM stock move after earnings? expand_more

Over 19 reports, WTM has moved an average of ±0.74% the session after earnings, closing higher 89.5% of the time.

What was WTM's biggest post-earnings move? expand_more

WTM's largest post-earnings gain on record was +2.75% on Feb 06, 2026, and its largest decline was -3.82% on May 06, 2026.

Where can I find White Mountains Insurance Group Ltd.'s SEC filings? expand_more

All of White Mountains Insurance Group Ltd.'s SEC filings — 10-K, 10-Q, 8-K and more — are listed in the SEC filings section on this page, each linking to the original document on SEC.gov.

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