Union Pacific Corporation
MX ˙ BMV ˙ US9078181081
SecurityMX:UNP / Union Pacific Corporation
InstitutionTower Bridge Advisors
Latest Disclosed Ownership21,017 shares
Latest Disclosed Value $ 5,099,145
Tower Bridge Advisors reports 0.84% increase in ownership of UNP / Union Pacific Corporation

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 21,017 shares of Union Pacific Corporation (MX:UNP) valued at $5,099,145 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 20,842 shares of Union Pacific Corporation. This represents a change in shares of 0.84% 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)
2026-05-12 2026-03-31 13F Union Pacific Common 907818108 21,017 175 0.84 5,099 5.77 0.3576
2026-02-13 2025-12-31 13F UNION PACIFIC COMMON 907818108 20,842 230 1.12 4,821 -1.05 0.4869
2025-11-12 2025-09-30 13F UNION PACIFIC COMMON 907818108 20,612 -680 -3.19 4,872 -0.53 0.4866
2025-08-11 2025-06-30 13F UNION PACIFIC COMMON 907818108 21,292 200 0.95 4,899 -1.69 0.5266
2025-05-08 2025-03-31 13F UNION PACIFIC COMMON 907818108 21,092 125 0.60 4,983 4.20 0.5567
2025-02-05 2024-12-31 13F UNION PACIFIC COMMON 907818108 20,967 -222 -1.05 4,781 -8.45 0.5092
2024-11-06 2024-09-30 13F UNION PACIFIC COMMON 907818108 21,189 1,075 5.34 5,223 14.77 0.5420
2024-07-24 2024-06-30 13F UNION PACIFIC COMMON 907818108 20,114 -2,885 -12.54 4,551 -19.55 0.5058
2024-04-29 2024-03-31 13F UNION PACIFIC COMMON 907818108 22,999 -9,645 -29.55 5,656 -29.46 0.5757
2024-02-14 2023-12-31 13F UNION PACIFIC COMMON 907818108 32,644 -1,749 -5.09 8,018 14.49 0.6897
2023-11-01 2023-09-30 13F UNION PACIFIC COMMON 907818108 34,393 1,524 4.64 7,003 4.13 0.6482
2023-07-20 2023-06-30 13F UNION PAC COM 907818108 32,869 1,102 3.47 6,726 5.19 0.6165
2023-04-26 2023-03-31 13F UNION PACIFIC COMMON 907818108 31,767 2,295 7.79 6,393 4.77 0.5235
2023-01-27 2022-12-31 13F UNION PACIFIC COMMON 907818108 29,472 5,435 22.61 6,103 30.33 0.5069
2022-11-14 2022-09-30 13F UNION PACIFIC COMMON 907818108 24,037 -199 -0.82 4,683 -9.42 0.4161
2022-07-21 2022-06-30 13F UNION PACIFIC COMMON 907818108 24,236 -1,342 -5.25 5,169 -26.03 0.4216
2022-05-05 2022-03-31 13F UNION PACIFIC COMMON 907818108 25,578 0 0.00 6,988 8.46 0.4671
2022-02-09 2021-12-31 13F UNION PACIFIC COMMON 907818108 25,578 -10 -0.04 6,444 28.47 0.3957
2021-10-28 2021-09-30 13F UNION PACIFIC COMMON 907818108 25,588 800 3.23 5,016 -8.00 0.3346
2021-08-10 2021-06-30 13F UNION PACIFIC COMMON 907818108 24,788 -510 -2.02 5,452 -2.22 0.3634
2021-05-12 2021-03-31 13F UNION PACIFIC COMMON 907818108 25,298 2,300 10.00 5,576 16.44 0.4198
2021-02-11 2020-12-31 13F UNION PACIFIC COMMON 907818108 22,998 11,648 102.63 4,789 114.32 0.3900
2020-11-13 2020-09-30 13F UNION PACIFIC COMMON 907818108 11,350 -50 -0.44 2,234 15.93 0.2283
2020-07-22 2020-06-30 13F UNION PACIFIC COMMON 907818108 11,400 -148 -1.28 1,927 18.37 0.2161
2020-04-27 2020-03-31 13F UNION PACIFIC COMMON 907818108 11,548 -2,022 -14.90 1,629 -33.63 0.2138
2020-02-05 2019-12-31 13F UNION PACIFIC COMMON 907818108 13,570 23 0.17 2,453 2.85 0.2592
2019-11-12 2019-09-30 13F UNION PACIFIC COMMON 907818108 13,547 -342 -2.46 2,386 1.58 0.2612
2019-08-06 2019-06-30 13F UNION PACIFIC COMMON 907818108 13,889 -240 -1.70 2,349 -0.59 0.2627
2019-04-30 2019-03-31 13F UNION PACIFIC COMMON 907818108 14,129 -89 -0.63 2,362 20.20 0.2742
2019-02-07 2018-12-31 13F UNION PACIFIC COMMON 907818108 14,218 -23 -0.16 1,965 -15.23 0.2532
2018-10-23 2018-09-30 13F UNION PACIFIC COMMON 907818108 14,241 -30 -0.21 2,319 14.70 0.2423
2018-08-09 2018-06-30 13F UNION PACIFIC COMMON 907818108 14,271 0 0.00 2,022 5.37 0.2255
2018-05-02 2018-03-31 13F UNION PACIFIC COMMON 907818108 14,271 -508 -3.44 1,918 -3.18 0.2127
2018-01-30 2017-12-31 13F UNION PACIFIC COMMON 907818108 14,779 84 0.57 1,982 16.26 0.2126
2017-11-06 2017-09-30 13F UNION PACIFIC COMMON 907818108 14,695 -100 -0.68 1,704 5.77 0.1937
2017-07-26 2017-06-30 13F UNION PACIFIC COMMON 907818108 14,795 -150 -1.00 1,611 1.83 0.1847
2017-05-02 2017-03-31 13F UNION PACIFIC COMMON 907818108 14,945 -300 -1.97 1,583 0.13 0.1848
2017-01-31 2016-12-31 13F UNION PACIFIC COMMON 907818108 15,245 -226 -1.46 1,581 4.77 0.1916
2016-10-27 2016-09-30 13F UNION PACIFIC COMMON 907818108 15,471 -100 -0.64 1,509 11.05 0.1837
2016-08-12 2016-06-30 13F UNION PACIFIC COMMON 907818108 15,571 -300 -1.89 1,359 7.61 0.1692
2016-05-12 2016-03-31 13F UNION PACIFIC COMMON 907818108 15,871 400 2.59 1,263 4.38 0.1577
2016-02-02 2015-12-31 13F UNION PACIFIC COMMON 907818108 15,471 0 0.00 1,210 -11.56 0.1576
2015-11-13 2015-09-30 13F/A-1 UNION PACIFIC COMMON 907818108 15,471 -283 -1.80 1,368 -8.99 0.1882
2015-11-12 2015-09-30 13F UNION PACIFIC COMMON 907818108 15,754 1,502
2015-08-13 2015-06-30 13F UNION PACIFIC COMMON 907818108 15,754 145 0.93 1,502 -11.12 0.1900
2015-05-14 2015-03-31 13F UNION PACIFIC COMMON 907818108 15,609 -117 -0.74 1,691 -9.77 0.2142
2015-02-19 2014-12-31 13F UNION PACIFIC COMMON 907818108 15,726 -42 -0.27 1,873 9.60 0.2303
2014-11-12 2014-09-30 13F UNION PACIFIC COMMON 907818108 15,768 0 0.00 1,710 8.72 0.2156
2014-08-26 2014-06-30 13F UNION PACIFIC COMMON 907818108 15,768 7,884 100.00 1,573 6.29 0.1940
2014-05-08 2014-03-31 13F UNION PACIFIC COMMON 907818108 7,884 0 0.00 1,480 11.71 0.1901
2014-02-10 2013-12-31 13F UNION PACIFIC COMMON 907818108 7,884 670 9.29 1,325 18.21 0.1739
2013-11-05 2013-09-30 13F UNION PACIFIC COMMON 907818108 7,214 11 0.15 1,121 0.81 0.1608
2013-07-24 2013-06-30 13F UNION PACIFIC COMMON 907818108 7,203 7,203 1,111 0.1647
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.