Norfolk Southern Corporation
MX ˙ BMV ˙ US6558441084
SecurityMX:NSC / Norfolk Southern Corporation
InstitutionMariner, LLC
Latest Disclosed Ownership56,926 shares
Latest Disclosed Value $ 16,336,792
Mariner, LLC reports 31.64% increase in ownership of NSC / Norfolk Southern Corporation

On May 13, 2026 - Mariner, LLC filed a 13F-HR form disclosing ownership of 56,926 shares of Norfolk Southern Corporation (MX:NSC) valued at $16,336,792 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 43,243 shares of Norfolk Southern Corporation. This represents a change in shares of 31.64% during the quarter.

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)
2026-05-13 2026-03-31 13F NORFOLK SOUTHN COM 655844108 56,926 13,683 31.64 16,337 30.87 0.0157
2026-02-13 2025-12-31 13F NORFOLK SOUTHN COM 655844108 43,243 -19,710 -31.31 12,484 -33.99 0.0149
2025-11-14 2025-09-30 13F NORFOLK SOUTHN COM 655844108 62,953 -2,758 -4.20 18,912 12.44 0.0244
2025-08-14 2025-06-30 13F NORFOLK SOUTHN COM 655844108 65,711 -3,062 -4.45 16,820 3.26 0.0243
2025-05-15 2025-03-31 13F NORFOLK SOUTHN COM 655844108 68,773 682 1.00 16,288 1.93 0.0271
2025-02-13 2024-12-31 13F NORFOLK SOUTHN COM 655844108 68,091 1,110 1.66 15,981 -3.97 0.0268
2024-11-13 2024-09-30 13F NORFOLK SOUTHN COM 655844108 66,981 410 0.62 16,641 16.44 0.0295
2024-08-13 2024-06-30 13F NORFOLK SOUTHN COM 655844108 66,571 2,664 4.17 14,292 -12.26 0.0277
2024-05-15 2024-03-31 13F NORFOLK SOUTHERN CRP Stock 655844108 63,907 1,458 2.33 16,288 10.34 0.0337
2024-02-14 2023-12-31 13F NORFOLK SOUTHN COM 655844108 62,449 6,677 11.97 14,762 34.40 0.0350
2023-11-13 2023-09-30 13F NORFOLK SOUTHN COM 655844108 55,772 -4,325 -7.20 10,983 -19.40 0.0295
2023-08-11 2023-06-30 13F NORFOLK SOUTHN COM 655844108 60,097 8,125 15.63 13,628 123,781.82 0.0364
2023-05-15 2023-03-31 13F NORFOLK SOUTHN COM 655844108 51,972 -52,888 -50.44 11 -99.96 0.0320
2023-02-14 2022-12-31 13F NORFOLK SOUTHN COM 655844108 104,860 668 0.64 25,840 18.28 0.0831
2022-11-10 2022-09-30 13F NORFOLK SOUTHN COM 655844108 104,192 10,302 10.97 21,846 2.37 0.0873
2022-08-15 2022-06-30 13F NORFOLK SOUTHN COM 655844108 93,890 5,651 6.40 21,340 -15.21 0.0876
2022-05-13 2022-03-31 13F NORFOLK SOUTHN COM 655844108 88,239 7,343 9.08 25,167 4.50 0.0950
2022-02-14 2021-12-31 13F NORFOLK SOUTHN COM 655844108 80,896 7,785 10.65 24,084 37.69 0.1019
2021-11-15 2021-09-30 13F NORFOLK SOUTHN COM 655844108 73,111 41,235 129.36 17,492 106.76 0.0913
2021-08-24 2021-06-30 13F NORFOLK SOUTHN COM 655844108 31,876 -262 -0.82 8,460 -1.97 0.0525
2021-05-07 2021-03-31 13F NORFOLK SOUTHN COM 655844108 32,138 4,602 16.71 8,630 31.90 0.0602
2021-02-16 2020-12-31 13F NORFOLK SOUTHN COM 655844108 27,536 719 2.68 6,543 14.01 0.0502
2020-11-13 2020-09-30 13F NORFOLK SOUTHN COM 655844108 26,817 1,309 5.13 5,739 28.13 0.0540
2020-08-14 2020-06-30 13F NORFOLK SOUTHERN COM 655844108 25,508 1,298 5.36 4,479 26.24 0.0449
2020-05-14 2020-03-31 13F NORFOLK SOUTHERN COM 655844108 24,210 5,711 30.87 3,548 -1.20 0.0443
2020-02-13 2019-12-31 13F NORFOLK SOUTHERN COM 655844108 18,499 549 3.06 3,591 11.35 0.0373
2019-11-13 2019-09-30 13F NORFOLK SOUTHERN COM 655844108 17,950 947 5.57 3,225 -4.84 0.0386
2019-08-14 2019-06-30 13F NORFOLK SOUTHERN COM 655844108 17,003 1,905 12.62 3,389 20.09 0.0404
2019-05-15 2019-03-31 13F NORFOLK SOUTHERN COM 655844108 15,098 -1,187 -7.29 2,822 15.89 0.0402
2019-02-13 2018-12-31 13F NORFOLK SOUTHERN COM 655844108 16,285 6,550 67.28 2,435 38.59 0.0434
2018-11-14 2018-09-30 13F NORFOLK SOUTHERN COM 655844108 9,735 -4,588 -32.03 1,757 -18.70 0.0452
2018-08-14 2018-06-30 13F NORFOLK SOUTHERN COM 655844108 14,323 5,991 71.90 2,161 91.07 0.0613
2018-05-15 2018-03-31 13F NORFOLK SOUTHERN COM 655844108 8,332 -999 -10.71 1,131 -16.28 0.0405
2018-02-09 2017-12-31 13F NORFOLK SOUTHERN COM 655844108 9,331 3,483 59.56 1,351 74.77 0.0523
2017-11-14 2017-09-30 13F NORFOLK SOUTHERN COM 655844108 5,848 3,346 133.73 773 154.28 0.0349
2017-08-11 2017-06-30 13F NORFOLK SOUTHERN COM 655844108 2,502 -100 -3.84 304 4.47 0.0143
2017-05-15 2017-03-31 13F NORFOLK SOUTHERN COM 655844108 2,602 0 0.00 291 3.56 0.0127
2017-02-14 2016-12-31 13F NORFOLK SOUTHERN COM 655844108 2,602 -815 -23.85 281 -15.62 0.0130
2016-11-14 2016-09-30 13F NORFOLK SOUTHERN COM 655844108 3,417 760 28.60 333 47.35 0.0161
2016-08-12 2016-06-30 13F NORFOLK SOUTHERN COM 655844108 2,657 -2,710 -50.49 226 -49.44 0.0122
2016-05-13 2016-03-31 13F NORFOLK SOUTHERN COM 655844108 5,367 2,749 105.00 447 102.26 0.0265
2016-02-16 2015-12-31 13F NORFOLK SOUTHERN COM 655844108 2,618 -1,210 -31.61 221 -24.32 0.0142
2015-11-16 2015-09-30 13F NORFOLK SOUTHERN COM 655844108 3,828 474 14.13 292 -0.34 0.0130
2015-08-17 2015-06-30 13F Norfolk Southern COS 655844108 3,354 3,354 -12.38 293 0.34 0.0136
2014-02-14 2013-12-31 13F NORFOLK SOUTHERN COM 655844108 0 -2,738 -100.00 0 -100.00
2013-11-14 2013-09-30 13F NORFOLK SOUTHERN COM 655844108 2,738 -84 -2.98 212 3.41 0.0391
2013-08-19 2013-06-30 13F NORFOLK SOUTHERN COM 655844108 2,822 2,822 205 0.0432
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.