CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership132,739 shares
Latest Disclosed Value $ 5,448,996
Vestmark Advisory Solutions, Inc. reports 28.37% increase in ownership of CSX / CSX Corporation

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 132,739 shares of CSX Corporation (US:CSX) valued at $5,448,936 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 103,400 shares of CSX Corporation. This represents a change in shares of 28.37% during the quarter. The current value of the position is $6,164,399 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CSX COM 126408103 132,739 29,339 28.37 5,449 45.36 0.0375
2026-02-06 2025-12-31 13F CSX COM 126408103 103,400 94,876 1,113.05 3,748 1,141.06 0.0506
2025-11-10 2025-09-30 13F CSX COM 126408103 8,524 8,524 303 0.0058
2023-11-06 2023-09-30 13F CSX COM 126408103 0 -16,883 -100.00 0 -100.00
2023-08-07 2023-06-30 13F CSX COM 126408103 16,883 1,468 9.52 576 24.73 0.0219
2023-05-09 2023-03-31 13F CSX COM 126408103 15,415 3,708 31.67 462 27.35 0.0200
2023-01-20 2022-12-31 13F CSX COM 126408103 11,707 238 2.08 363 18.30 0.0177
2022-11-03 2022-09-30 13F CSX COM 126408103 11,469 -605 -5.01 306 -12.82 0.0171
2022-08-04 2022-06-30 13F CSX COM 126408103 12,074 -4,215 -25.88 351 -42.46 0.0200
2022-04-27 2022-03-31 13F CSX COM 126408103 16,289 -519 -3.09 610 -3.48 0.0345
2022-01-31 2021-12-31 13F CSX COM 126408103 16,808 1,831 12.23 632 42.02 0.0357
2021-11-15 2021-09-30 13F CSX COM 126408103 14,977 2,698 21.97 445 12.94 0.0301
2021-08-09 2021-06-30 13F CSX COM 126408103 12,279 8,389 215.66 394 5.07 0.0280
2021-05-10 2021-03-31 13F CSX COM 126408103 3,890 756 24.12 375 32.04 0.0333
2021-02-04 2020-12-31 13F CSX COM 126408103 3,134 -236 -7.00 284 8.40 0.0319
2020-10-19 2020-09-30 13F CSX COM 126408103 3,370 136 4.21 262 15.93 0.0352
2020-08-13 2020-06-30 13F CSX COM 126408103 3,234 3,234 226 0.0350
2019-11-05 2019-09-30 13F CSX COM 126408103 0 -3,075 -100.00 0 -100.00
2019-08-20 2019-06-30 13F CSX COM 126408103 3,075 271 9.66 238 13.33 0.0407
2019-05-14 2019-03-31 13F CSX COM 126408103 2,804 2,804 210 0.0374
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.