Current position

Warren Buffett’s Chubb Limited (CB) position

Reported position history, portfolio importance and verified filing changes from public SEC disclosures.

Berkshire HathawayVerified through Q2 2026
Relationship snapshot

At a glance

The full verified relationship, including prior ownership episodes and exits where supported.

First reportedQ3 2023Earliest verified positive filing snapshot
Latest statusCurrent positionBased on the latest supported relationship state
Peak shares34.25MHighest verified quarter-end share count
Quarters reported12Verified quarters with shares above zero
What happened?

Berkshire Hathaway first reported Chubb Limited in Q3 2023. The reported position was increased across later filings. Berkshire Hathaway currently reports 34.25M shares. The latest verified filing showed: No change.

Verified SEC history

Position over time

See the same verified relationship through reported shares, portfolio weight or reported value.

Metric

Gaps indicate periods that cannot be safely connected or where a verified corporate action changes the raw share scale. Stock price, when available, is market context and not a transaction price.

Key filing events

What changed

Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.

Q2 2026
No change34.25M shares reported
Filing context

Quarter-end price $340.74 · Estimated holding basis $242.73

Q4 2025
Bought 9.3% more+2.92M shares · 34.25M shares reported after the change
Filing context

Quarter-end price $312.12 · Estimated holding basis $242.73

Q3 2025
Bought 15.9% more+4.30M shares · 31.33M shares reported after the change
Filing context

Quarter-end price $282.25 · Estimated holding basis $236.27

Q2 2024
Bought 4.3% more+1.11M shares · 27.03M shares reported after the change
Filing context

Quarter-end price $255.08 · Estimated holding basis $228.96

Q1 2024
Bought 29.0% more+5.82M shares · 25.92M shares reported after the change
Filing context

Quarter-end price $259.13 · Estimated holding basis $227.84

Q4 2023
Bought 146.8% more+11.96M shares · 20.10M shares reported after the change
Filing context

Quarter-end price $226.00 · Estimated holding basis $218.78

5 unchanged quarters are collapsed by default.

Portfolio importance

How important is Chubb Limited in Berkshire Hathaway’s reported portfolio?

Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.

Current portfolio weight3.9%Q2 2026
Current rank#8of 29 reported positions
Peak portfolio weight4.2%Q1 2026
Best historical rank#8Q3 2025
At peak importanceQ1 2026
CB
4.2%
Largest holding
22.0%
Cross-investor discovery

Who else owns Chubb Limited?

Also reported by 3 other tracked investors in their latest verified filings.

Joel GreenblattGotham Asset Management
CB0.1% of reported portfolio
George SorosSoros Fund Management
CB0.1% of reported portfolio
Ray DalioBridgewater Associates, LP
CB0.1% of reported portfolio
Explore Chubb Limited across all tracked investors →
MarketInsiderLab research

Connected research on Chubb Limited

Only published MIL research mapped to the exact stock identity is shown here.

DECODERPorter Stansberry’s “Perpetual Money Machine” Teaser: Are W.R. Berkley, Chubb and Kinsale the Stocks?Sep 14, 2026

Porter Stansberry’s “Perpetual Money Machine” report names W.R. Berkley, Chubb and Kinsale. We test its underwriting, float and…

SEC evidence & methodology

SEC filing evidence

Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.

Latest verified stock price$340.642026-09-18

Market context only; not an investor transaction price.

Latest filing quarter-end price$340.74Q2 2026

Derived from validated reported value and shares where supported.

Estimated holding basis$242.73Historical reference — not actual purchase price

Calculated from supported filing history.

Latest verified investor filingQ2 2026 · filed 2026-08-14
Open SEC filing ↗

View Chubb Limited stock page →

This tracker follows Berkshire Hathaway’s Form 13F disclosures. It is not Warren Buffett’s personal brokerage account, and 13F filings do not reveal exact trade dates or execution prices.