CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership370,250 shares
Latest Disclosed Value $ 15,198,750
Northwestern Mutual Wealth Management Co reports 10.91% decrease in ownership of CSX / CSX Corporation

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 370,250 shares of CSX Corporation (US:CSX) valued at $15,198,762 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 415,586 shares of CSX Corporation. This represents a change in shares of -10.91% during the quarter. The current value of the position is $17,398,048 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)
2026-05-07 2026-03-31 13F CSX COM 126408103 370,250 -45,336 -10.91 15,199 0.89 0.0094
2026-02-10 2025-12-31 13F/A-1 CSX COM 126408103 415,586 -1,084,892 -72.30 15,065 -71.73 0.0095
2026-02-05 2025-12-31 13F CSX COM 126408103 331,548 -1,168,930 33,962 0.0214
2025-11-14 2025-09-30 13F CSX COM 126408103 1,500,478 40,282 2.76 53,282 11.83 0.0355
2025-08-13 2025-06-30 13F CSX COM 126408103 1,460,196 50,760 3.60 47,646 14.87 0.0347
2025-05-14 2025-03-31 13F CSX COM 126408103 1,409,436 29,170 2.11 41,480 -6.87 0.0339
2025-02-11 2024-12-31 13F CSX COM 126408103 1,380,266 31,361 2.32 44,541 -4.37 0.0376
2024-11-12 2024-09-30 13F CSX COM 126408103 1,348,905 70,683 5.53 46,578 8.94 0.0414
2024-08-16 2024-06-30 13F CSX COM 126408103 1,278,222 -39,754 -3.02 42,757 -12.49 0.0422
2024-05-15 2024-03-31 13F CSX COM 126408103 1,317,976 -7,534 -0.57 48,858 6.31 0.0502
2024-02-13 2023-12-31 13F CSX COM 126408103 1,325,510 32,888 2.54 45,955 15.62 0.0518
2023-11-14 2023-09-30 13F CSX COM 126408103 1,292,622 47,506 3.82 39,749 -6.38 0.0517
2023-08-14 2023-06-30 13F CSX COM 126408103 1,245,116 232,393 22.95 42,458 40.03 0.0549
2023-05-15 2023-03-31 13F CSX COM 126408103 1,012,723 -33,410 -3.19 30,321 -6.45 0.0423
2023-02-21 2022-12-31 13F CSX COM 126408103 1,046,133 30,682 3.02 32,409 19.81 0.0491
2022-11-14 2022-09-30 13F CSX COM 126408103 1,015,451 43,393 4.46 27,051 -4.24 0.0472
2022-08-04 2022-06-30 13F CSX COM 126408103 972,058 33,161 3.53 28,248 -19.66 0.0485
2022-05-09 2022-03-31 13F CSX COM 126408103 938,897 62,651 7.15 35,162 6.73 0.0564
2022-02-03 2021-12-31 13F CSX COM 126408103 876,246 22,931 2.69 32,946 29.83 0.0538
2021-11-15 2021-09-30 13F CSX COM 126408103 853,315 39,659 4.87 25,377 -2.78 0.0464
2021-08-13 2021-06-30 13F CSX COM 126408103 813,656 567,816 230.97 26,102 10.12 0.0496
2021-05-14 2021-03-31 13F CSX COM 126408103 245,840 9,006 3.80 23,704 10.29 0.0503
2021-02-12 2020-12-31 13F CSX COM 126408103 236,834 15,362 6.94 21,492 24.94 0.0496
2020-11-13 2020-09-30 13F CSX COM 126408103 221,472 1,057 0.48 17,202 11.91 0.0463
2020-08-14 2020-06-30 13F CSX COM 126408103 220,415 119,844 119.16 15,371 166.77 0.0474
2020-05-08 2020-03-31 13F CSX COM 126408103 100,571 19,300 23.75 5,762 -2.02 0.0222
2020-02-13 2019-12-31 13F CSX COM 126408103 81,271 -512 -0.63 5,881 3.81 0.0200
2019-11-12 2019-09-30 13F CSX COM 126408103 81,783 543 0.67 5,665 -9.89 0.0215
2019-08-12 2019-06-30 13F CSX COM 126408103 81,240 -8,900 -9.87 6,287 -6.78 0.0253
2019-05-10 2019-03-31 13F CSX COM 126408103 90,140 1,493 1.68 6,744 22.46 0.0295
2019-02-12 2018-12-31 13F CSX COM 126408103 88,647 8,332 10.37 5,507 -7.40 0.0276
2018-11-01 2018-09-30 13F CSX COM 126408103 80,315 784 0.99 5,947 17.23 0.0300
2018-08-10 2018-06-30 13F CSX COM 126408103 79,531 1,246 1.59 5,073 16.30 0.0284
2018-05-14 2018-03-31 13F CSX COM 126408103 78,285 -8,314 -9.60 4,362 -8.44 0.0265
2018-01-31 2017-12-31 13F CSX COM 126408103 86,599 11,633 15.52 4,764 17.11 0.0304
2017-11-07 2017-09-30 13F CSX COM 126408103 74,966 -11,112 -12.91 4,068 -13.39 0.0291
2017-08-10 2017-06-30 13F CSX COM 126408103 86,078 17,235 25.04 4,697 46.55 0.0377
2017-05-09 2017-03-31 13F CSX COM 126408103 68,843 -29,598 -30.07 3,205 -12.48 0.0292
2017-02-15 2016-12-31 13F CSX COM 126408103 98,441 27,284 38.34 3,662 68.76 0.0397
2016-11-14 2016-09-30 13F CSX COM 126408103 71,157 3,854 5.73 2,170 23.65 0.0332
2016-08-29 2016-06-30 13F CSX COM 126408103 67,303 3,549 5.57 1,755 6.88 0.0251
2016-05-16 2016-03-31 13F CSX COM 126408103 63,754 -20,739 -24.55 1,642 -25.13 0.0266
2016-02-16 2015-12-31 13F CSX COM 126408103 84,493 -81,787 -49.19 2,193 -50.97 0.0438
2015-11-16 2015-09-30 13F CSX COM 126408103 166,280 1,434 0.87 4,473 -16.89 0.1065
2015-09-30 2015-06-30 13F/A-1 CSX COM 126408103 164,846 -67,429 -29.03 5,382 -30.04 0.1396
2015-08-14 2015-06-30 13F CSX COM 126408103 164,010 5,382
2015-05-15 2015-03-31 13F CSX COM 126408103 232,275 70,740 43.79 7,693 31.46 0.2152
2015-02-13 2014-12-31 13F CSX COM 126408103 161,535 540 0.34 5,852 13.39 0.1806
2014-11-14 2014-09-30 13F CSX COM 126408103 160,995 -33,516 -17.23 5,161 -13.87 0.1805
2014-08-05 2014-06-30 13F CSX COM 126408103 194,511 -726 -0.37 5,992 5.94 0.2338
2014-05-15 2014-03-31 13F CSX COM 126408103 195,237 14,787 8.19 5,656 8.96 0.2366
2014-02-14 2013-12-31 13F CSX COM 126408103 180,450 13,370 8.00 5,191 20.69 0.2359
2013-11-14 2013-09-30 13F CSX COM 126408103 167,080 22,599 15.64 4,301 28.39 0.2262
2013-08-21 2013-06-30 13F/A-1 CSX COM 126408103 144,481 144,481 3,350 0.2003
2013-08-14 2013-06-30 13F CSX COM 126408103 215,610 5,000 0.0550
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.