CSX Corporation
AT ˙ WBAG ˙ US1264081035
40,74 € ↑1,16 (2,94%)
2026-06-05
DEL PRIS
SecurityAT:CSX / CSX Corporation
InstitutionJennison Associates Llc
Latest Disclosed Ownership151,485 shares
Latest Disclosed Value $ 6,218,459
Jennison Associates Llc reports 52.97% increase in ownership of CSX / CSX Corporation

On May 6, 2026 - Jennison Associates Llc filed a 13F-HR form disclosing ownership of 151,485 shares of CSX Corporation (AT:CSX) valued at $5,292,128 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 99,032 shares of CSX Corporation. This represents a change in shares of 52.97% during the quarter. The current value of the position is $6,170,741 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)
2026-05-06 2026-03-31 13F CSX COM 126408103 151,485 52,453 52.97 6,218 73.25 0.0023
2026-01-30 2025-12-31 13F CSX COM 126408103 99,032 28,215 39.84 3,590 42.76 0.0022
2025-10-30 2025-09-30 13F CSX COM 126408103 70,817 70,817 2,515 0.0015
2025-01-24 2024-12-31 13F CSX COM 126408103 0 -69,380 -100.00 0 -100.00
2024-11-08 2024-09-30 13F CSX COM 126408103 69,380 -45,934 -39.83 2,396 -37.91 0.0015
2024-08-05 2024-06-30 13F CSX COM 126408103 115,314 -390 -0.34 3,857 -10.07 0.0025
2024-05-02 2024-03-31 13F CSX COM 126408103 115,704 1,029 0.90 4,289 7.90 0.0029
2024-02-01 2023-12-31 13F CSX COM 126408103 114,675 13,159 12.96 3,976 27.36 0.0030
2023-10-31 2023-09-30 13F CSX COM 126408103 101,516 -15,715 -13.41 3,122 -21.92 0.0027
2023-08-03 2023-06-30 13F CSX COM 126408103 117,231 117,231 3,998 0.0033
2019-05-10 2019-03-31 13F CSX COM 126408103 0 -391,576 -100.00 0 -100.00
2019-02-06 2018-12-31 13F CSX COM 126408103 391,576 -529,987 -57.51 24,329 -64.35 0.0272
2018-11-08 2018-09-30 13F CSX COM 126408103 921,563 26,629 2.98 68,242 19.56 0.0628
2018-08-02 2018-06-30 13F CSX COM 126408103 894,934 177,731 24.78 57,079 42.86 0.0557
2018-04-20 2018-03-31 13F CSX COM 126408103 717,203 -5,761 -0.80 39,955 0.47 0.0397
2018-01-25 2017-12-31 13F CSX COM 126408103 722,964 -1,843,870 -71.83 39,770 -71.45 0.0393
2017-11-03 2017-09-30 13F CSX COM 126408103 2,566,834 -1,091,815 -29.84 139,276 -30.23 0.1427
2017-08-04 2017-06-30 13F CSX COM 126408103 3,658,649 1,074,296 41.57 199,616 65.93 0.2117
2017-08-02 2017-03-31 13F/A-1 CSX COM 126408103 2,584,353 2,569,050 16,787.88 120,302 21,773.09 0.1291
2017-04-28 2017-03-31 13F CSX COM 126408103 2,584,353 2,569,050 120,302
2017-08-02 2016-12-31 13F/A-1 CSX COM 126408103 15,303 15,303 550 0.0006
2017-02-06 2016-12-31 13F CSX COM 126408103 15,303 550
2016-11-01 2016-09-30 13F CSX COM 126408103 0 -47,107 -100.00 0 -100.00
2016-08-03 2016-06-30 13F CSX COM 126408103 47,107 47,107 0.00 1,229 0.0013
2016-02-10 2015-12-31 13F CSX COM 126408103 0 -121,559 -100.00 0 -100.00
2015-11-06 2015-09-30 13F CSX COM 126408103 121,559 37,531 44.66 3,270 34.35 0.0035
2014-05-07 2014-03-31 13F CSX COM 126408103 84,028 -41,904 -33.28 2,434 -32.82 0.0023
2014-02-10 2013-12-31 13F CSX COM 126408103 125,932 8,565 7.30 3,623 19.93 0.0036
2013-11-13 2013-09-30 13F CSX COM 126408103 117,367 117,367 3,021 0.0032
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.