Exited position

Warren Buffett’s Marsh & Mclennan Cos Inc (MRSH) 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 2020Earliest verified positive filing snapshot
Latest statusExited positionBased on the latest supported relationship state
Peak shares5.29MHighest verified quarter-end share count
Quarters reported11Verified quarters with shares above zero
What happened?

Berkshire Hathaway first reported Marsh & Mclennan Cos Inc in Q3 2020. The reported position was increased and reduced across later filings. The latest verified relationship event shows that Berkshire Hathaway sold the entire position in Q2 2023, and the stock is no longer reported in the latest verified portfolio.

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 2023
Sold the entire position−404.91K shares · No shares reported at quarter-end
Q4 2021
Sold 85.2% of the position−2.34M shares · 404.91K shares remained
Filing context

Quarter-end price $173.82 · Estimated holding basis $116.46

Q3 2021
Sold 34.7% of the position−1.45M shares · 2.74M shares remained
Filing context

Quarter-end price $151.43 · Estimated holding basis $116.46

Q2 2021
Sold 20.6% of the position−1.09M shares · 4.20M shares remained
Filing context

Quarter-end price $140.68 · Estimated holding basis $116.46

Q1 2021
Bought 23.9% more+1.02M shares · 5.29M shares reported after the change
Filing context

Quarter-end price $121.80 · Estimated holding basis $116.46

Q4 2020
Bought 26.8% more+901.32K shares · 4.27M shares reported after the change
Filing context

Quarter-end price $117.00 · Estimated holding basis $115.19

5 unchanged quarters are collapsed by default.

Portfolio importance

How important was Marsh & Mclennan Cos Inc in Berkshire Hathaway’s reported portfolio?

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

Last reported portfolio weight0.0%Q1 2023
Last reported rank#37of 48 reported positions
Peak portfolio weight0.2%Q1 2021
Best historical rank#30Q1 2021
At peak importanceQ1 2021
MRSH
0.2%
Largest holding
40.1%
Cross-investor discovery

Who else owns Marsh & Mclennan Cos Inc?

Also reported by 2 other tracked investors in their latest verified filings.

Joel GreenblattGotham Asset Management
MRSH0.1% of reported portfolio
Ray DalioBridgewater Associates, LP
MRSH0.0% of reported portfolio
Explore Marsh & Mclennan Cos Inc across all tracked investors →
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$179.762026-09-15

Market context only; not an investor transaction price.

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

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.