# MARSH & MCLENNAN COS INC (MRSH) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 571748102
Page URL: https://superinvestorclub.com/stock/MRSH
Last updated: 2026-08-29T13:48:54.775Z

## Summary

As of the most recent 13F filing period, MARSH & MCLENNAN COS INC (MRSH) is held by 7 tracked superinvestors with an aggregate position value of $1.78B representing 0868749698490476350012121392694179491200 shares.

## Top institutional holders (7)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Bill Nygren](https://superinvestorclub.com/manager/73) | Harris Associates | 8687496 | $1.45B | 1.92% | 2026-06-30 |
| 2 | [Jensen Investment Management](https://superinvestorclub.com/manager/93) | Jensen Investment Management | 984904 | $164.2M | 3.98% | 2026-06-30 |
| 3 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 763500 | $127.3M | 0.97% | 2026-06-30 |
| 4 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 121213 | $20.2M | 0.25% | 2026-06-30 |
| 5 | [Torray LLC](https://superinvestorclub.com/manager/3250) | Torray LLC | 92694 | $15.4M | 2.08% | 2026-06-30 |
| 6 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 17949 | $3.0M | 0.01% | 2026-06-30 |
| 7 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 1200 | $200,004 | 0.00% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $242,623 aggregate, 01290 shares
- 2023-09-30: 1 holders, $997,743 aggregate, 05243 shares
- 2024-03-31: 3 holders, $405.8M aggregate, 012750516940001024 shares
- 2024-06-30: 4 holders, $463.4M aggregate, 0148698170650045471024 shares
- 2024-09-30: 5 holders, $602.2M aggregate, 01973234722500137411321024 shares
- 2024-12-31: 5 holders, $611.4M aggregate, 020628287355007787713741046 shares
- 2025-03-31: 6 holders, $1.36B aggregate, 0262968621217307435007081514491024 shares
- 2025-06-30: 6 holders, $1.10B aggregate, 0242363717822007487507001513741059 shares
- 2025-09-30: 8 holders, $1.03B aggregate, 02406645179975375500070015620671734513561059 shares
- 2025-12-31: 7 holders, $644.7M aggregate, 0148486010843177617509767725777192801356 shares
- 2026-03-31: 8 holders, $1.31B aggregate, 05169119115120476350026152710869794329193801300 shares
- 2026-06-30: 7 holders, $1.78B aggregate, 0868749698490476350012121392694179491200 shares

## Recent congressional trades (18)

- 2026-01-27: Tina Smith (Democrat-MN) sale $50,001 - $100,000
- 2025-11-10: Ro Khanna (Democrat-CA) sale $15,001 - $50,000
- 2025-11-03: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-07: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-26: Ro Khanna (Democrat-CA) sale $15,001 - $50,000
- 2025-08-04: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-07-25: Ro Khanna (Democrat-CA) purchase $15,001 - $50,000
- 2025-06-23: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-05-19: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-05-15: Rob Bresnahan (Republican-PA) sale $1,001 - $15,000
- 2025-04-07: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-03-24: George  Whitesides (Democrat-CA) sale $100,001 - $250,000
- 2025-03-12: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-02-25: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-01-22: Ro Khanna (Democrat-CA) sale $15,001 - $50,000

## Recent insider transactions (0)


## Citation

When citing, use: "MARSH & MCLENNAN COS INC (MRSH) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/MRSH), aggregating SEC 13F, Form 4, and congressional disclosures."