CSX
Csx Corp
4 of the 83 super-investors we track hold CSX, worth a combined $361M per their latest 13F filings. The largest position: Harry Burn at 2.2% of their portfolio. No cohort buying or selling was filed on the name this quarter. Conviction score: 27 of 100 (how strongly the cohort backs it) — ranked #481 of 742 stocks. The stock is up 6.7x since a tracked investor first held it at conviction size (Q1 2014 or earlier). Conviction easing: 1 fewer super-investor hold it than in 2026Q1.
Held through it: John Armitage (9q straight), Viking Global Investors (14q straight), Stephen Mandel (6q straight) and 4 more. All multibaggers the cohort held →
Why super-investors own CSX
CSX is held by 4 super-investors in our cohort, with a combined position value of $361M. The highest-conviction owner is Harry Burn at 2.2% of their portfolio. Cohort ownership has shrunk from 6 to 4 over the last four quarters — net interest is fading.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (4) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Joel Greenblatt | 0.1% | 40q | $262M | 5,514,487 |
| 2 | Harry Burn | 2.2% | 7q | $70M | 1,472,441 |
| 3 | Thomas Gayner | 0.2% | 7q | $28M | 584,500 |
| 4 | Kahn Brothers Group | 0.3% | 12q | $1M | 36,481 |
Owners of CSX also hold
Congress is trading CSX
Congress tracker →- Thomas H Tubervillesold$15,001 - $50,000 · 2026-06-08
- Markwayne Mullinsold$15,001 - $50,000 · 2025-11-10
- Kevin Hernsold$15,001 - $50,000 · 2025-10-28
- Valerie Hoylesold$1,001 - $15,000 · 2025-09-23
- Markwayne Mullinbought$15,001 - $50,000 · 2025-05-13
- Jefferson Shrevesold$15,001 - $50,000 · 2025-05-12
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Long US equity 13F-HR filings only. CUSIP 126408103. Not investment advice.