Union Pacific Corporation
US ˙ NYSE ˙ US9078181081

SecurityUNP / Union Pacific Corporation
InstitutionGrandfield & Dodd, Llc
Latest Disclosed Ownership4,103 shares
Latest Disclosed Value $ 995,470
Grandfield & Dodd, Llc reports 3.41% decrease in ownership of UNP / Union Pacific Corporation

On May 7, 2026 - Grandfield & Dodd, Llc filed a 13F-HR form disclosing ownership of 4,103 shares of Union Pacific Corporation (US:UNP) valued at $995,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 4,248 shares of Union Pacific Corporation. This represents a change in shares of -3.41% during the quarter. The current value of the position is $1,117,329 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)
2026-05-07 2026-03-31 13F UNION PAC COM 907818108 4,103 -145 -3.41 995 1.32 0.0562
2026-02-10 2025-12-31 13F UNION PAC COM 907818108 4,248 0 0.00 983 -2.19 0.0557
2025-10-30 2025-09-30 13F UNION PAC COM 907818108 4,248 -26 -0.61 1,004 2.14 0.0570
2025-08-08 2025-06-30 13F UNION PAC COM 907818108 4,274 -124 -2.82 983 -5.30 0.0576
2025-05-02 2025-03-31 13F UNION PAC COM 907818108 4,398 0 0.00 1,039 3.59 0.0644
2025-02-06 2024-12-31 13F UNION PAC COM 907818108 4,398 0 0.00 1,003 -7.56 0.0618
2024-11-08 2024-09-30 13F UNION PAC COM 907818108 4,398 0 0.00 1,084 8.94 0.0642
2024-08-09 2024-06-30 13F UNION PAC COM 907818108 4,398 -15 -0.34 995 -8.29 0.0630
2024-05-06 2024-03-31 13F UNION PAC COM 907818108 4,413 -395 -8.22 1,085 -8.05 0.0685
2024-01-31 2023-12-31 13F UNION PAC COM 907818108 4,808 273 6.02 1,181 27.84 0.0816
2023-10-26 2023-09-30 13F UNION PAC COM 907818108 4,535 -413 -8.35 923 -8.79 0.0678
2023-08-08 2023-06-30 13F UNION PAC COM 907818108 4,948 -209 -4.05 1,012 -2.41 0.0708
2023-04-28 2023-03-31 13F UNION PAC COM 907818108 5,157 0 0.00 1,038 -2.81 0.0725
2023-01-20 2022-12-31 13F UNION PAC COM 907818108 5,157 -100 -1.90 1,068 4.61 0.0781
2022-11-04 2022-09-30 13F UNION PAC COM 907818108 5,257 0 0.00 1,020 -8.93 0.0833
2022-08-01 2022-06-30 13F UNION PAC COM 907818108 5,257 0 0.00 1,120 -22.22 0.0882
2022-04-19 2022-03-31 13F UNION PAC COM 907818108 5,257 0 0.00 1,440 9.09 0.0977
2022-02-08 2021-12-31 13F UNION PAC COM 907818108 5,257 -25 -0.47 1,320 26.92 0.0849
2021-10-28 2021-09-30 13F UNION PAC COM 907818108 5,282 -82 -1.53 1,040 -11.86 0.0726
2021-07-28 2021-06-30 13F UNION PAC COM 907818108 5,364 -24 -0.45 1,180 -0.84 0.0817
2021-04-22 2021-03-31 13F UNION PAC COM 907818108 5,388 -69 -1.26 1,190 4.39 0.0890
2021-01-29 2020-12-31 13F UNION PAC COM 907818108 5,457 0 0.00 1,140 6.54 0.0894
2020-11-03 2020-09-30 13F UNION PAC COM 907818108 5,457 0 0.00 1,070 16.30 0.0964
2020-07-24 2020-06-30 13F UNION PAC COM 907818108 5,457 95 1.77 920 21.69 0.0890
2020-05-14 2020-03-31 13F UNION PAC COM 907818108 5,362 -6,442 -54.57 756 -64.57 0.0891
2020-02-07 2019-12-31 13F UNION PACIFIC COM 907818108 11,804 -150 -1.25 2,134 10.23 0.1944
2019-10-30 2019-09-30 13F UNION PACIFIC COM 907818108 11,954 0 0.00 1,936 -4.25 0.1905
2019-07-29 2019-06-30 13F UNION PACIFIC COM 907818108 11,954 0 0.00 2,022 1.15 0.1999
2019-04-26 2019-03-31 13F UNION PACIFIC COM 907818108 11,954 0 0.00 1,999 21.00 0.2082
2019-02-12 2018-12-31 13F UNION PAC COM 907818108 11,954 0 0.00 1,652 -15.11 0.1955
2018-11-02 2018-09-30 13F UNION PAC COM 907818108 11,954 0 0.00 1,946 14.88 0.2005
2018-07-27 2018-06-30 13F UNION PAC COM 907818108 11,954 60 0.50 1,694 5.94 0.1861
2018-05-04 2018-03-31 13F/A-1 UNION PAC COM 907818108 11,894 -10 -0.08 1,599 0.19 0.1784
2018-05-04 2018-03-31 13F UNION PAC COM 907818108 11,894 -10 1,599
2018-02-05 2017-12-31 13F UNION PAC COM 907818108 11,904 -128 -1.06 1,596 14.41 0.1704
2017-11-03 2017-09-30 13F UNION PAC COM 907818108 12,032 0 0.00 1,395 6.49 0.1566
2017-07-27 2017-06-30 13F UNION PAC COM 907818108 12,032 0 0.00 1,310 2.83 0.1548
2017-04-28 2017-03-31 13F UNION PAC COM 907818108 12,032 0 0.00 1,274 2.17 0.1574
2017-02-02 2016-12-31 13F UNION PAC COM 907818108 12,032 -800 -6.23 1,247 -0.40 0.1616
2016-10-24 2016-09-30 13F UNION PAC COM 907818108 12,832 470 3.80 1,252 16.03 0.1645
2016-07-28 2016-06-30 13F UNION PAC COM 907818108 12,362 0 0.00 1,079 9.77 0.1510
2016-05-06 2016-03-31 13F UNION PAC COM 907818108 12,362 -100 -0.80 983 0.82 0.1423
2016-02-03 2015-12-31 13F UNION PAC COM 907818108 12,462 -114 -0.91 975 -12.32 0.1482
2015-11-02 2015-09-30 13F UNION PAC COM 907818108 12,576 -156 -1.23 1,112 -8.40 0.1865
2015-08-03 2015-06-30 13F UNION PAC COM 907818108 12,732 180 1.43 1,214 -10.74 0.1857
2015-05-15 2015-03-31 13F UNION PAC COM 907818108 12,552 -706 -5.33 1,360 -13.87 0.2079
2015-02-05 2014-12-31 13F UNION PAC COM 907818108 13,258 -862 -6.10 1,579 3.14 0.2441
2014-11-10 2014-09-30 13F UNION PAC COM 907818108 14,120 -18,898 -57.24 1,531 -53.52 0.2406
2014-08-14 2014-06-30 13F UNION PAC COM 907818108 33,018 16,439 99.16 3,294 5.88 0.4970
2014-05-06 2014-03-31 13F UNION PAC COM 907818108 16,579 1,203 7.82 3,111 20.44 0.4884
2014-02-06 2013-12-31 13F UNION PAC COM 907818108 15,376 -200 -1.28 2,583 6.74 0.4197
2013-11-04 2013-09-30 13F UNION PAC COM 907818108 15,576 0 0.00 2,420 0.71 0.4315
2013-08-01 2013-06-30 13F UNION PAC COM 907818108 15,576 15,576 2,403 0.4551
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.