JANA Partners Management, LP: MARKEL GROUP INC (MKL): Quarterly 13F Position History
As of Q1 2026, JANA Partners Management, LP reported 75,307 shares of MARKEL GROUP INC (MKL), worth $144.1M and representing 9.0% of its 13F equity book. Quarter-over-quarter share count change: 5,912 (-7.3%) . The position first appeared in Q4 2024 and has been disclosed across 6 13F-HR filings in Pactolio's tracked window.
- 75,307Shares Held (Latest Filing)
- $144.1MReported Market Value (Latest Filing)
- 9.0%Portfolio Weight (% of 13F Equity Book)
- 5,912Quarter-over-Quarter Share Change
- -$30.4MQuarter-over-Quarter Value Change
- 156,022Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 6 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 75,307 | 5,912 | -7.3% | $144.1M | 9.0% | $1914.1 |
| Q4 2025 | 81,219 | 66,192 | -44.9% | $174.6M | 9.1% | $2149.7 |
| Q3 2025 | 147,411 | 4,021 | -2.7% | $281.8M | 13.6% | $1911.4 |
| Q2 2025 | 151,432 | 4,590 | -2.9% | $302.5M | 15.2% | $1997.4 |
| Q1 2025 | 156,022 | +47,096 | +43.2% | $291.7M | 15.1% | $1869.6 |
| Q4 2024 | 108,926 | — | — | $188.0M | 9.8% | $1726.2 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did JANA Partners Management, LP first disclose a MKL position in 13F-HR filings?
JANA Partners Management, LP first reported MARKEL GROUP INC (MKL) on its 13F-HR filing for the period ending 2024-12-31 (Q4 2024). The position has appeared on 6 reported quarters within Pactolio's tracked window.
What was JANA Partners Management, LP's most recent quarter-over-quarter share-count change in MKL?
Between Q4 2025 and Q1 2026, JANA Partners Management, LP reduced its MKL position by 5,912 shares (-7.3%), leaving 75,307 shares at a market value of $144.1M.
Does the implied price-per-share represent JANA Partners Management, LP's cost basis in MKL?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.