Markel Corporation
Markel Corporation (MKL) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MKL · as of Mar 31, 2025
Ownership Breakdown
865
Institutional Holders
▲ 23 vs Q4
$19.05B
Total Inst. Value
▲ $1.86B vs Q4
12.51M
Shares Outstanding
freeFloat 97.75%
10.19M
13F Shares Held
▲ 108,149 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MKL largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC fire, marine & casualty insurance | 1.16M | 9.05% | 9.05% | $2.17T | May 9, 2025 | ▲ 7.9K |
BLACKROCK, INC. fire, marine & casualty insurance | 766.7K | 5.99% | 5.99% | $1.43T | May 2, 2025 | ▲ 11.7K |
PRINCIPAL FINANCIAL GROUP INC fire, marine & casualty insurance | 543.9K | 4.25% | 4.25% | $1.02T | Apr 28, 2025 | ▼ 4.3K |
MORGAN STANLEY fire, marine & casualty insurance | 482.1K | 3.77% | 3.77% | $901.35B | May 15, 2025 | ▼ 35.0K |
DAVIS SELECTED ADVISERS fire, marine & casualty insurance | 371.5K | 2.90% | 2.90% | $694.50B | May 12, 2025 | ▲ 947 |
STATE STREET CORP fire, marine & casualty insurance | 310.4K | 2.42% | 2.42% | $580.26B | May 15, 2025 | ▼ 2.8K |
BOSTON PARTNERS fire, marine & casualty insurance | 276.7K | 2.16% | 2.16% | $517.18B | May 13, 2025 | ▼ 5.1K |
GEODE CAPITAL MANAGEMENT, LLC fire, marine & casualty insurance | 220.0K | 1.72% | 1.72% | $410.35B | May 13, 2025 | ▲ 10.7K |
BAILLIE GIFFORD & CO fire, marine & casualty insurance | 210.5K | 1.64% | 1.64% | $393.52B | May 7, 2025 | ▼ 16.7K |
DAVENPORT & CO LLC fire, marine & casualty insurance | 203.3K | 1.59% | 1.59% | $379.54B | Apr 28, 2025 | ▼ 997 |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
22
Increased
+311.3K shares2
New Positions
first time holders23
Decreased
−172.0K shares0
Sold Out
fully exitedNet shares change (top 50)
+139.3K
+311.3K / −172.0K
Net new holders
+1
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MKL insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
14
Buy transactions
4
Sell transactions
3.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Harris Greta J director | May 22, 2026 | Sale | 35 | $1846.12 | $64.6K | 686 | Form 4 ↗ |
Harris Greta J director | May 22, 2026 | Sale | 14 | $1847.36 | $25.9K | 672 | Form 4 ↗ |
Harris Greta J director | May 22, 2026 | Sale | 27 | $1848.83 | $49.9K | 645 | Form 4 ↗ |
MICHAEL JONATHAN E director | May 20, 2026 | Award | 89 | — | — | 266.805 | Form 4 ↗ |
Morrison Harold Lawrence Jr. director | May 20, 2026 | Award | 89 | — | — | 1.1K | Form 4 ↗ |
Besca Mark director | May 20, 2026 | Award | 89 | — | — | 1.1K | Form 4 ↗ |
Harris Greta J director | May 20, 2026 | Award | 89 | — | — | 721 | Form 4 ↗ |
Cunningham Lawrence A director | May 20, 2026 | Award | 89 | — | — | 1.0K | Form 4 ↗ |
OREILLY MICHAEL director | May 20, 2026 | Award | 89 | — | — | 3.8K | Form 4 ↗ |
Housel Morgan E. director | May 20, 2026 | Award | 89 | — | — | 963.05 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Markel Corporation (MKL) is primarily owned by institutional investors, who hold approximately 81.5% of total shares outstanding. Company insiders own approximately 2.25%, while retail and public investors account for the remaining 16.30%.
The largest institutional shareholder of Markel Corporation is VANGUARD GROUP INC, holding approximately 1.16 million shares — equal to 9.05% of outstanding shares — as of March 31, 2025.
A total of 865 institutional investors currently hold MKL stock, with a combined institutional value of approximately $19.05 billion as of the most recent 13F filing period.
Frequently asked questions
MKL ownershipMarkel Corporation (MKL) is primarily owned by institutional investors, who hold approximately 81.5% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.05% stake. Company insiders hold 2.25%. Data sourced from SEC Form 13F as of March 31, 2025.