Whale Analyzer
MRSH Institutional Holders and 13F Ownership
Compare 12 tracked holders of MRSH, their reported positions and disclosed changes. Coverage is limited to the investors tracked by Whale Analyzer; these records do not establish all shareholders or current trades. Available original SEC filings for tracked 13F holders are linked below. Top tracked holders include Capital Research Global Investors, Oakmark Funds, PRIMECAP Management Company, and National Pension Service.
Continue to the live MRSH dashboardTop holders
| Investor | Reported value | Shares | Change | Report date |
|---|---|---|---|---|
| Capital Research Global Investors 13F holdings | $1.83B | 11.0M | Reduced | 2026-06-30 |
| Oakmark Funds 13F holdings | $1.45B | 8.7M | Increased | 2026-06-30 |
| PRIMECAP Management Company 13F holdings | $357.5M | 2.1M | Increased | 2026-06-30 |
| National Pension Service 13F holdings | $188.1M | 1.1M | New | 2026-06-30 |
| Jensen Investment Management 13F holdings | $164.2M | 984.9K | Reduced | 2026-06-30 |
| Markel Group 13F holdings | $130.4M | 763.5K | Held | 2026-09-30 |
| Horizon Kinetics Asset Management 13F holdings | $23.3M | 140.0K | Reduced | 2026-06-30 |
| First Pacific Advisors 13F holdings | $20.2M | 121.2K | Increased | 2026-06-30 |
| Torray Funds 13F holdings | $8.0M | 46.6K | Reduced | 2026-09-30 |
| Bridgewater Associates 13F holdings | $3.0M | 17.9K | New | 2026-06-30 |
| Mairs & Power Funds 13F holdings | $200.0K | 1.2K | Reduced | 2026-06-30 |
| Baillie Gifford & Co 13F holdings | $85.2K | 511 | Reduced | 2026-06-30 |
Original SEC filing sources
These recorded filings support the tracked 13F rows included in the aggregate reported values on this page. See each holder profile for source coverage and context for other disclosure types.
- Capital Research Global Investors SEC filing (0001422848-26-000094) · report date 2026-06-30
- Oakmark Funds SEC filing (0000813917-26-000042) · report date 2026-06-30
- PRIMECAP Management Company SEC filing (0000763212-26-000028) · report date 2026-06-30
- National Pension Service SEC filing (0001193125-26-347818) · report date 2026-06-30
- Jensen Investment Management SEC filing (0001171200-26-000010) · report date 2026-06-30
- Markel Group SEC filing (0001096343-26-000085) · report date 2026-09-30
- Horizon Kinetics Asset Management SEC filing (0001398344-26-014047) · report date 2026-06-30
- First Pacific Advisors SEC filing (0001377581-26-000007) · report date 2026-06-30
- Torray Funds SEC filing (0001193125-26-439683) · report date 2026-09-30
- Bridgewater Associates SEC filing (0001350694-26-000003) · report date 2026-06-30
- Mairs & Power Funds SEC filing (0001172661-26-003496) · report date 2026-06-30
- Baillie Gifford & Co SEC filing (0001088875-26-000057) · report date 2026-06-30
Tracked-sample concentration
Reported position value for MRSH is highly concentrated within this tracked-holder sample. These percentages are not market-wide ownership shares.
- Largest tracked holder: 43.8% of aggregate reported value in this sample
- Top 5 tracked holders: 95.6% of aggregate reported value in this sample
- Top 10 tracked holders: 100.0% of aggregate reported value in this sample
Whale activity this quarter
Across 12 tracked holders, 6 reduced, 5 increased, 1 held. Net positioning is net selling.
- Capital Research Global Investors ($1.83B) (▼ 2.9% qoq shares) · modeled avg cost estimate $190.96
- Oakmark Funds ($1.45B) (▲ 68.1% qoq shares)
- PRIMECAP Management Company ($357.5M) (▲ 199.0% qoq shares)
- National Pension Service ($188.1M) · modeled avg cost estimate $114.21
- Jensen Investment Management ($164.2M) (▼ 14.4% qoq shares)
- Markel Group ($130.4M) (→ 0.0% qoq shares) · modeled avg cost estimate $93.58
- Horizon Kinetics Asset Management ($23.3M) (▼ 7.5% qoq shares) · modeled avg cost estimate $150.17
- First Pacific Advisors ($20.2M) (▲ 11.5% qoq shares)
Modeled cost estimate vs current price
The share-weighted modeled cost estimate across 6 covered tracked holders is $178.32 versus a current price of $204.82, so MRSH trades above that estimate (+14.9%). This model does not establish any filer's actual purchase price, unrealized gain, or investment return.
Sector positioning — Financials
MRSH sits within the Financials sector alongside 139 other tracked names. Compare reported positions across tracked peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time or market-wide ownership totals. Open the live MRSH dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
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Learn more in Whale Analyzer Academy
Deepen your read on MRSH with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns MRSH stock?
Whale Analyzer tracks 12 public-disclosure holders of MRSH with a combined reported value of $4.17B. See the holder table above for the largest tracked positions.
Which top funds are buying MRSH?
Tracked holders were net selling last quarter — 6 reduced, 5 increased, 1 held. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is the tracked MRSH sample?
The top five tracked holders account for 95.6% of aggregate reported value in this tracked sample. This is not a market-wide ownership percentage.
How does MRSH compare with the modeled cost estimate?
The share-weighted modeled cost estimate across 6 covered tracked holders is $178.32 versus a current price of $204.82 (+14.9%). It is not an actual purchase price, unrealized gain, or investment return.
What does 13F ownership mean for MRSH?
These are historical reported positions from tracked filers, not real-time ownership or a complete shareholder register. Use the interactive MRSH dashboard to explore them, or read our 13F Alpha Signals Guide.