# CSX CORP (CSX) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 126408103
Page URL: https://superinvestorclub.com/stock/CSX
Last updated: 2026-07-08T11:36:54.787Z

## Summary

As of the most recent 13F filing period, CSX CORP (CSX) is held by 6 tracked superinvestors with an aggregate position value of $969.9M representing 01867805223752282002159530000364816431 shares.

## Top institutional holders (6)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Andreas Halvorsen](https://superinvestorclub.com/manager/59) | Viking Global Investors | 18678052 | $766.7M | 2.14% | 2026-03-31 |
| 2 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 2375228 | $97.5M | 0.44% | 2026-03-31 |
| 3 | [Harry Burn](https://superinvestorclub.com/manager/81) | Sound Shore Management | 2002159 | $82.2M | 2.75% | 2026-03-31 |
| 4 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 530000 | $21.8M | 0.18% | 2026-03-31 |
| 5 | [Kahn Brothers](https://superinvestorclub.com/manager/83) | Kahn Brothers Group | 36481 | $1.5M | 0.27% | 2026-03-31 |
| 6 | [Dan Sundheim](https://superinvestorclub.com/manager/3261) | D1 Capital Partners | 6431 | $263,985 | 0.11% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2023-09-30: 1 holders, $1.6M aggregate, 050428 shares
- 2023-12-31: 1 holders, $1.7M aggregate, 050320 shares
- 2024-03-31: 3 holders, $165.0M aggregate, 0395779744167750320 shares
- 2024-06-30: 3 holders, $190.7M aggregate, 0473854491314649820 shares
- 2024-09-30: 3 holders, $339.8M aggregate, 0935174743964749820 shares
- 2024-12-31: 5 holders, $553.4M aggregate, 0146725372101785316844498206657 shares
- 2025-03-31: 4 holders, $616.9M aggregate, 017068769311051073491048731 shares
- 2025-06-30: 7 holders, $731.1M aggregate, 018871882310699319436011958365000407316420 shares
- 2025-09-30: 7 holders, $676.3M aggregate, 0159477192416667285000194360154988407316424 shares
- 2025-12-31: 8 holders, $655.7M aggregate, 0138175392401874690967500000440000194360375316427 shares
- 2026-03-31: 6 holders, $969.9M aggregate, 01867805223752282002159530000364816431 shares

## Recent congressional trades (23)

- 2025-11-10: Markwayne Mullin (Republican-OK) sale $15,001 - $50,000
- 2025-10-28: Kevin Hern (Republican-OK) sale $15,001 - $50,000
- 2025-05-19: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-05-13: Markwayne Mullin (Republican-OK) purchase $15,001 - $50,000
- 2025-05-12: Jefferson Shreve (Republican-IN) sale $15,001 - $50,000
- 2025-04-23: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-04-21: Bruce Westerman (Republican-AR) sale $1,001 - $15,000
- 2025-04-17: Jefferson Shreve (Republican-IN) purchase $15,001 - $50,000
- 2025-04-15: Tommy Tuberville (Republican-AL) sale $15,001 - $50,000
- 2025-04-08: Rob Bresnahan (Republican-PA) sale $1,001 - $15,000
- 2025-04-08: Bruce Westerman (Republican-AR) purchase $1,001 - $15,000
- 2025-04-08: Markwayne Mullin (Republican-OK) sale $15,001 - $50,000
- 2025-03-13: Jefferson Shreve (Republican-IN) sale $15,001 - $50,000
- 2025-03-12: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-03-06: Ro Khanna (Democrat-CA) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "CSX CORP (CSX) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/CSX), aggregating SEC 13F, Form 4, and congressional disclosures."