CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionMorgan Stanley
Latest Disclosed Ownership25,459,167 shares
Latest Disclosed Value $ 1,045,098,890
Morgan Stanley reports 4.71% decrease in ownership of CSX / CSX Corporation

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 25,459,167 shares of CSX Corporation (US:CSX) valued at $1,045,098,805 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 26,716,490 shares of CSX Corporation. This represents a change in shares of -4.71% during the quarter. The current value of the position is $1,182,323,715 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 25,459,167 -1,257,323 -4.71 1,045,099 7.91 0.0630
2026-05-27 2025-12-31 13F/A-1 CSX COM 126408103 26,716,490 -1,684,569 -5.93 968,473 -3.97 0.0578
2026-02-13 2025-12-31 13F CSX COM 126408103 26,716,490 -1,684,569 968,473 0.0578
2026-05-27 2025-09-30 13F/A-1 CSX COM 126408103 28,401,059 2,327,752 8.93 1,008,522 18.54 0.0611
2025-11-14 2025-09-30 13F CSX COM 126408103 28,401,059 2,327,752 1,008,522 0.0611
2025-08-15 2025-06-30 13F CSX COM 126408103 26,073,307 -5,299,840 -16.89 850,772 -7.86 0.0554
2025-05-15 2025-03-31 13F CSX COM 126408103 31,373,147 3,743,361 13.55 923,312 3.56 0.0660
2025-05-15 2024-12-31 13F/A-1 CSX COM 126408103 27,629,786 2,458,383 9.77 891,613 2.58 0.0625
2025-02-14 2024-12-31 13F CSX COM 126408103 27,629,786 2,458,383 891,613 0.0625
2025-05-14 2024-09-30 13F/A-2 CSX COM 126408103 25,171,403 -211,093 -0.83 869,169 2.37 0.0630
2025-02-14 2024-09-30 13F/A-1 CSX COM 126408103 25,171,403 -211,093 869,169 0.0630
2024-11-14 2024-09-30 13F CSX COM 126408103 25,171,403 -211,093 869,169 0.0075
2025-05-14 2024-06-30 13F/A-2 CSX COM 126408103 25,382,496 412,272 1.65 849,045 -8.28 0.0657
2024-10-17 2024-06-30 13F/A-1 CSX COM 126408103 25,382,496 412,272 849,045 0.0657
2024-08-14 2024-06-30 13F CSX COM 126408103 25,382,496 412,272 849,045 0.0657
2024-10-17 2024-03-31 13F/A-2 CSX COM 126408103 24,970,224 -122,975 -0.49 925,646 6.40 0.0743
2024-08-16 2024-03-31 13F/A-1 CSX COM 126408103 24,970,224 -122,975 925,646 0.0743
2024-05-15 2024-03-31 13F CSX COM 126408103 24,970,224 -122,975 925,646 0.0743
2024-08-16 2023-12-31 13F/A-1 CSX COM 126408103 25,093,199 752,685 3.09 869,981 16.23 0.0767
2024-02-13 2023-12-31 13F CSX COM 126408103 25,093,199 752,685 869,981 0.0767
2023-11-15 2023-09-30 13F CSX COM 126408103 24,340,514 739,411 3.13 748,471 -7.00 0.0761
2023-08-14 2023-06-30 13F CSX COM 126408103 23,601,103 -197,739 -0.83 804,798 12.95 0.0793
2023-05-15 2023-03-31 13F CSX COM 126408103 23,798,842 1,481,575 6.64 712,537 3.06 0.0764
2023-02-14 2022-12-31 13F CSX COM 126408103 22,317,267 2,940,824 15.18 691,389 33.94 0.0785
2022-11-14 2022-09-30 13F CSX COM 126408103 19,376,443 677,393 3.62 516,189 -5.01 0.0704
2022-10-27 2022-06-30 13F/A-1 CSX COM 126408103 18,699,050 7,837,094 72.15 543,394 33.58 0.0705
2022-08-15 2022-06-30 13F CSX COM 126408103 18,699,050 7,837,094 543,394 0.0705
2022-10-27 2022-03-31 13F/A-1 CSX COM 126408103 10,861,956 733,224 7.24 406,781 6.81 0.0549
2022-05-13 2022-03-31 13F CSX COM 126408103 10,861,956 733,224 406,781 0.0549
2022-02-14 2021-12-31 13F CSX COM 126408103 10,128,732 651,682 6.88 380,843 35.12 0.0470
2021-11-15 2021-09-30 13F CSX COM 126408103 9,477,050 2,781,389 41.54 281,848 31.22 0.0380
2021-08-23 2021-06-30 13F/A-1 CSX COM 126408103 6,695,661 4,169,640 165.07 214,798 -11.81 0.0283
2021-08-16 2021-06-30 13F CSX COM 126408103 6,695,661 4,169,640 214,798 0.0059
2021-05-17 2021-03-31 13F CSX COM 126408103 2,526,021 -1,261,851 -33.31 243,559 -29.15 0.0358
2021-02-16 2020-12-31 13F CSX COM 126408103 3,787,872 1,251,547 49.34 343,749 74.49 0.0531
2020-11-13 2020-09-30 13F CSX COM 126408103 2,536,325 255,393 11.20 196,997 23.84 0.0381
2020-08-14 2020-06-30 13F CSX COM 126408103 2,280,932 264,295 13.11 159,072 37.66 0.0352
2020-05-26 2020-03-31 13F/A-1 CSX COM 126408103 2,016,637 -313,557 -13.46 115,551 -31.47 0.0314
2020-05-15 2020-03-31 13F CSX COM 126408103 2,016,637 -313,557 115,551 8,876.7256
2020-02-14 2019-12-31 13F CSX COM 126408103 2,330,194 290,002 14.21 168,614 19.31 0.0392
2019-11-14 2019-09-30 13F CSX COM 126408103 2,040,192 -419,165 -17.04 141,325 -25.73 0.0374
2019-08-14 2019-06-30 13F CSX COM 126408103 2,459,357 -410,727 -14.31 190,282 -11.39 0.0506
2019-05-15 2019-03-31 13F CSX COM 126408103 2,870,084 -4,143,966 -59.08 214,741 -50.72 0.0608
2019-02-14 2018-12-31 13F CSX COM 126408103 7,014,050 -1,789,559 -20.33 435,781 -33.15 0.1304
2019-04-23 2018-09-30 13F/A-2 CSX COM 126408103 8,803,609 2,462,931 38.84 651,908 61.20 0.1632
2018-11-20 2018-09-30 13F/A-1 CSX COM 126408103 8,803,609 0 651,908 0.1632
2018-11-14 2018-09-30 13F CSX COM 126408103 8,803,609 2,462,931 651,908
2019-04-23 2018-06-30 13F/A-1 CSX COM 126408103 6,340,678 757,521 13.57 404,409 30.02 0.1093
2018-08-14 2018-06-30 13F CSX COM 126408103 6,340,678 757,521 404,409
2019-04-23 2018-03-31 13F/A-1 CSX COM 126408103 5,583,157 199,922 3.71 311,038 5.03 0.0863
2018-05-14 2018-03-31 13F CSX COM 126408103 5,583,157 199,922 311,038
2019-04-23 2017-12-31 13F/A-1 CSX COM 126408103 5,383,235 2,186,498 68.40 296,130 70.72 0.0811
2018-02-14 2017-12-31 13F CSX COM 126408103 5,383,235 2,186,498 296,130
2017-11-14 2017-09-30 13F CSX COM 126408103 3,196,737 166,523 5.50 173,456 4.92 0.0520
2017-08-11 2017-06-30 13F CSX COM 126408103 3,030,214 -129,225 -4.09 165,329 12.41 0.0499
2017-05-22 2017-03-31 13F/A-1 CSX COM 126408103 3,159,439 -1,136,198 -26.45 147,073 -4.71 0.0452
2017-05-12 2017-03-31 13F CSX COM 126408103 3,159,439 147,073
2017-02-22 2016-12-31 13F/A-1 CSX COM 126408103 4,295,637 428,226 11.07 154,343 30.85 0.0505
2017-02-13 2016-12-31 13F CSX COM 126408103 4,295,637 154,343
2016-11-10 2016-09-30 13F CSX COM 126408103 3,867,411 118,895 3.17 117,956 20.66 0.0403
2016-08-12 2016-06-30 13F CSX COM 126408103 3,748,516 -1,091,987 -22.56 97,761 -21.57 0.0353
2016-05-12 2016-03-31 13F CSX COM 126408103 4,840,503 304,929 6.72 124,641 5.90 0.0480
2016-02-09 2015-12-31 13F CSX COM 126408103 4,535,574 -722,479 -13.74 117,697 -16.79 0.0426
2016-02-08 2015-09-30 13F/A-1 CSX COM 126408103 5,258,053 -3,513,166 -40.05 141,442 -50.61 0.0523
2015-11-09 2015-09-30 13F CSX COM 126408103 5,258,053 141,442
2015-08-12 2015-06-30 13F CSX COM 126408103 8,771,219 3,074,601 53.97 286,381 51.79 0.0993
2015-05-14 2015-03-31 13F CSX COM 126408103 5,696,618 -354,148 -5.85 188,673 -13.93 0.0695
2015-02-13 2014-12-31 13F CSX COM 126408103 6,050,766 972,048 19.14 219,221 34.64 0.0802
2014-12-16 2014-09-30 13F/A-1 CSX COM 126408103 5,078,718 -80,488 -1.56 162,824 2.43 0.0626
2014-11-14 2014-09-30 13F CSX COM 126408103 5,078,718 162,824
2014-08-12 2014-06-30 13F CSX COM 126408103 5,159,206 -347,506 -6.31 158,956 -0.36 0.2719
2014-05-13 2014-03-31 13F CSX COM 126408103 5,506,712 -935,870 -14.53 159,529 -13.93 0.0668
2014-02-13 2013-12-31 13F CSX COM 126408103 6,442,582 -245,957 -3.68 185,352 7.66 0.0788
2013-11-13 2013-09-30 13F CSX CORP COM COM 126408103 6,688,539 -1,532,766 -18.64 172,160 -9.70 0.0814
2013-08-08 2013-06-30 13F CSX CORP COM COM 126408103 8,221,305 8,221,305 190,651 0.0962
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.