Union Pacific Corporation
MX ˙ BMV ˙ US9078181081
SecurityMX:UNP / Union Pacific Corporation
InstitutionCoreFirst Bank & Trust
Latest Disclosed Ownership896 shares
Latest Disclosed Value $ 217,388
CoreFirst Bank & Trust reports 4.88% decrease in ownership of UNP / Union Pacific Corporation

On June 3, 2026 - CoreFirst Bank & Trust filed a 13F-HR form disclosing ownership of 896 shares of Union Pacific Corporation (MX:UNP) valued at $217,388 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 942 shares of Union Pacific Corporation. This represents a change in shares of -4.88% 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)
2026-06-03 2026-03-31 13F Union Pac Com 907818108 896 -46 -4.88 217 0.00 0.0734
2026-02-11 2025-12-31 13F Union Pac Com 907818108 942 -1,021 -52.01 218 -53.13 0.1178
2025-11-13 2025-09-30 13F Union Pac Com 907818108 1,963 0 0.00 464 2.66 0.1597
2025-08-14 2025-06-30 13F Union Pac Com 907818108 1,963 -72 -3.54 452 -6.04 0.2551
2025-04-29 2025-03-31 13F Union Pac Com 907818108 2,035 72 3.67 481 7.38 0.3091
2025-02-11 2024-12-31 13F Union Pac Com 907818108 1,963 0 0.00 448 -7.45 0.2661
2025-02-11 2024-09-30 13F Union Pac Com 907818108 1,963 -39 -1.95 484 6.86 0.2795
2024-08-14 2024-06-30 13F Union Pac Com 907818108 2,002 -700 -25.91 453 -31.93 0.3048
2024-05-15 2024-03-31 13F Union Pac Com 907818108 2,702 -43 -1.57 665 -1.48 0.4155
2024-03-18 2023-12-31 13F Union Pac Com 907818108 2,745 -50 -1.79 674 18.45 0.4482
2023-12-18 2023-09-30 13F Union Pac Com 907818108 2,795 17 0.61 569 0.18 0.4042
2023-08-07 2023-06-30 13F Union Pac Com 907818108 2,778 0 0.00 568 1.61 0.4000
2023-05-15 2023-03-31 13F Union Pac Com 907818108 2,778 -27 -0.96 559 -3.62 0.4069
2023-02-16 2022-12-31 13F Union Pac Com 907818108 2,805 4 0.14 581 6.23 0.4406
2022-11-16 2022-09-30 13F Union Pac Com 907818108 2,801 62 2.26 546 -6.51 0.4710
2022-08-16 2022-06-30 13F Union Pac Com 907818108 2,739 891 48.21 584 15.64 0.4612
2022-05-16 2022-03-31 13F Union Pac Com 907818108 1,848 -1,532 -45.33 505 -40.73 0.3454
2022-02-10 2021-12-31 13F Union Pac Com 907818108 3,380 1,286 61.41 852 107.80 0.5510
2021-11-15 2021-09-30 13F Union Pac Com 907818108 2,094 -68 -3.15 410 -13.87 0.2842
2021-08-17 2021-06-30 13F Union Pac Com 907818108 2,162 -566 -20.75 476 -20.80 0.3240
2021-05-18 2021-03-31 13F Union Pac Com 907818108 2,728 0 0.00 601 5.81 0.4128
2021-02-16 2020-12-31 13F Union Pac Com 907818108 2,728 2,728 568 0.4210
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.