CSX Corporation
US ˙ NasdaqGS ˙ US1264081035

SecurityCSX / CSX Corporation
InstitutionUniSuper Management Pty Ltd
Latest Disclosed Ownership2,342,636 shares
Latest Disclosed Value $ 96,165,208
UniSuper Management Pty Ltd reports 5.65% increase in ownership of CSX / CSX Corporation

On May 11, 2026 - UniSuper Management Pty Ltd filed a 13F-HR form disclosing ownership of 2,342,636 shares of CSX Corporation (US:CSX) valued at $96,165,208 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,217,445 shares of CSX Corporation. This represents a change in shares of 5.65% during the quarter. The current value of the position is $110,080,466 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)
2026-05-11 2026-03-31 13F CSX COM 126408103 2,342,636 125,191 5.65 96,165 19.63 0.6290
2026-02-12 2025-12-31 13F CSX COM 126408103 2,217,445 153,094 7.42 80,382 9.65 0.4815
2025-10-31 2025-09-30 13F CSX COM 126408103 2,064,351 21,129 1.03 73,305 9.95 0.4488
2025-07-22 2025-06-30 13F CSX COM 126408103 2,043,222 580,637 39.70 66,670 54.89 0.4468
2025-05-15 2025-03-31 13F CSX COM 126408103 1,462,585 -282,545 -16.19 43,044 -23.57 0.3208
2025-02-12 2024-12-31 13F CSX COM 126408103 1,745,130 643,350 58.39 56,315 48.03 0.4040
2024-11-14 2024-09-30 13F CSX COM 126408103 1,101,780 11,320 1.04 38,044 4.30 0.2862
2024-08-05 2024-06-30 13F CSX COM 126408103 1,090,460 -364,560 -25.06 36,476 -32.37 0.3025
2024-05-13 2024-03-31 13F CSX COM 126408103 1,455,020 33,874 2.38 53,938 9.47 0.5163
2024-02-13 2023-12-31 13F CSX COM 126408103 1,421,146 2,015 0.14 49,271 12.91 0.5451
2023-11-13 2023-09-30 13F CSX COM 126408103 1,419,131 0 0.00 43,638 -9.82 0.5348
2023-11-13 2023-06-30 13F/A-1 CSX COM 126408103 1,419,131 1,419,131 48,392 0.5492
2023-08-14 2023-06-30 13F CSX COM 126408103 1,419,131 1,419,131 48,392 0.3926
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.