CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionCullinan Associates Inc
Latest Disclosed Ownership17,600 shares
Latest Disclosed Value $ 722,480
Cullinan Associates Inc ownership in CSX / CSX Corporation

On May 1, 2026 - Cullinan Associates Inc filed a 13F-HR form disclosing ownership of 17,600 shares of CSX Corporation (US:CSX) valued at $722,480 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 17,600 shares of CSX Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $817,344 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-01 2026-03-31 13F CSX COM 126408103 17,600 0 0.00 722 13.17 0.0584
2026-01-30 2025-12-31 13F CSX COM 126408103 17,600 0 0.00 638 2.24 0.0432
2025-10-27 2025-09-30 13F CSX COM 126408103 17,600 0 0.00 625 8.71 0.0407
2025-07-22 2025-06-30 13F CSX COM 126408103 17,600 0 0.00 574 11.03 0.0379
2025-04-22 2025-03-31 13F CSX COM 126408103 17,600 0 0.00 518 -8.82 0.0366
2025-01-24 2024-12-31 13F CSX COM 126408103 17,600 -6,000 -25.42 568 -28.86 0.0365
2024-10-23 2024-09-30 13F CSX COM 126408103 23,600 2,600 12.38 797 13.53 0.0450
2024-07-10 2024-06-30 13F CSX COM 126408103 21,000 12,000 133.33 702 110.81 0.0397
2024-04-18 2024-03-31 13F CSX COM 126408103 9,000 -400 -4.26 334 2.46 0.0187
2024-01-24 2023-12-31 13F CSX COM 126408103 9,400 0 0.00 326 12.46 0.0182
2023-10-11 2023-09-30 13F CSX COM 126408103 9,400 0 0.00 289 -9.69 0.0168
2023-07-14 2023-06-30 13F CSX COM 126408103 9,400 -17,020 -64.42 321 -59.54 0.0176
2023-04-05 2023-03-31 13F CSX COM 126408103 26,420 -1,170 -4.24 791 -7.49 0.0462
2023-01-11 2022-12-31 13F CSX COM 126408103 27,590 3,970 16.81 1 -100.00 0.0474
2022-10-19 2022-09-30 13F CSX COM 126408103 23,620 0 0.00 629 -8.31 0.0397
2022-07-08 2022-06-30 13F CSX COM 126408103 23,620 6,300 36.37 686 5.70 0.0419
2022-04-21 2022-03-31 13F CSX COM 126408103 17,320 -67,404 -79.56 649 -79.63 0.0341
2022-01-07 2021-12-31 13F CSX COM 126408103 84,724 385 0.46 3,186 27.03 0.1622
2021-10-08 2021-09-30 13F CSX COM 126408103 84,339 -2,800 -3.21 2,508 -10.27 0.1386
2021-07-07 2021-06-30 13F CSX COM 126408103 87,139 61,496 239.82 2,795 13.07 0.1565
2021-04-20 2021-03-31 13F CSX COM 126408103 25,643 525 2.09 2,472 8.47 0.1422
2021-01-14 2020-12-31 13F CSX COM 126408103 25,118 -903 -3.47 2,279 12.77 0.1367
2020-10-09 2020-09-30 13F CSX COM 126408103 26,021 -1,917 -6.86 2,021 3.75 0.1303
2020-07-07 2020-06-30 13F CSX COM 126408103 27,938 -1,233 -4.23 1,948 16.51 0.1366
2020-04-01 2020-03-31 13F CSX COM 126408103 29,171 -9,850 -25.24 1,672 -40.79 0.1367
2020-01-15 2019-12-31 13F CSX COM 126408103 39,021 2,040 5.52 2,824 10.23 0.1888
2019-10-01 2019-09-30 13F CSX COM 126408103 36,981 1,763 5.01 2,562 -5.98 0.1824
2019-07-16 2019-06-30 13F CSX COM 126408103 35,218 -7,102 -16.78 2,725 -13.93 0.1978
2019-04-30 2019-03-31 13F CSX COM 126408103 42,320 4,550 12.05 3,166 34.90 0.2378
2019-01-11 2018-12-31 13F CSX COM 126408103 37,770 2,400 6.79 2,347 -10.39 0.1938
2018-10-19 2018-09-30 13F CSX COM 126408103 35,370 2,835 8.71 2,619 26.22 0.1896
2018-07-09 2018-06-30 13F CSX COM 126408103 32,535 -20,220 -38.33 2,075 -29.40 0.1588
2018-04-26 2018-03-31 13F CSX COM 126408103 52,755 -3,500 -6.22 2,939 -5.04 0.2226
2018-01-17 2017-12-31 13F CSX COM 126408103 56,255 -2,860 -4.84 3,095 -3.52 0.2273
2017-10-16 2017-09-30 13F CSX COM 126408103 59,115 260 0.44 3,208 -0.09 0.2471
2017-07-12 2017-06-30 13F CSX COM 126408103 58,855 -2,600 -4.23 3,211 12.23 0.2500
2017-04-17 2017-03-31 13F CSX COM 126408103 61,455 -25,925 -29.67 2,861 -8.89 0.2333
2017-01-30 2016-12-31 13F CSX COM 126408103 87,380 -399 -0.45 3,140 17.30 0.2674
2016-10-03 2016-09-30 13F CSX COM 126408103 87,779 9,955 12.79 2,677 31.87 0.2289
2016-07-01 2016-06-30 13F CSX COM 126408103 77,824 38,200 96.41 2,030 99.02 0.1650
2016-05-20 2016-03-31 13F CSX COM 126408103 39,624 -15,900 -28.64 1,020 -29.22 0.0871
2016-01-12 2015-12-31 13F CSX COM 126408103 55,524 2,250 4.22 1,441 0.56 0.1255
2015-10-05 2015-09-30 13F CSX COM 126408103 53,274 3,300 6.60 1,433 -12.19 0.1309
2015-07-06 2015-06-30 13F CSX COM 126408103 49,974 850 1.73 1,632 0.31 0.1346
2015-04-14 2015-03-31 13F CSX COM 126408103 49,124 2,265 4.83 1,627 -4.12 0.1262
2015-01-21 2014-12-31 13F CSX Common 126408103 46,859 -17,300 -26.96 1,697 -17.46 0.1796
2014-11-12 2014-09-30 13F CSX Common 126408103 64,159 36,935 135.67 2,056 225.83 0.2342
2014-08-15 2014-06-30 13F CSX Common 126408103 27,224 -30,835 -53.11 631 -62.49 0.1027
2014-05-08 2014-03-31 13F CSX Common 126408103 58,059 8,635 17.47 1,682 18.28 0.1913
2014-02-14 2013-12-31 13F CSX Common 126408103 49,424 13,700 38.35 1,422 54.73 0.1648
2013-10-18 2013-09-30 13F CSX Common 126408103 35,724 7,000 24.37 919 37.99 0.1232
2013-08-13 2013-06-30 13F CSX Common 126408103 28,724 28,724 666 0.0900
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.