Union Pacific Corporation
CH ˙ SWX ˙ US9078181081
SecurityCH:UNP / Union Pacific Corporation
InstitutionHarvard Management Co Inc
Latest Disclosed Ownership634,376 shares
Latest Disclosed Value $ 153,912,305
Harvard Management Co Inc reports 3.79% increase in ownership of UNP / Union Pacific Corporation

On May 15, 2026 - Harvard Management Co Inc filed a 13F-HR form disclosing ownership of 634,376 shares of Union Pacific Corporation (CH:UNP) valued at $153,912,305 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 611,233 shares of Union Pacific Corporation. This represents a change in shares of 3.79% 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)
2026-05-15 2026-03-31 13F UNION PAC COM 907818108 634,376 23,143 3.79 153,912 8.86 8.4769
2026-02-13 2025-12-31 13F UNION PAC COM 907818108 611,233 611,233 141,390 6.8000
2014-08-08 2014-06-30 13F UNION PAC COM 907818108 0 -41,833 -100.00 0 -100.00
2014-05-09 2014-03-31 13F UNION PAC COM 907818108 41,833 -14,187 -25.32 7,850 -16.59 0.8044
2014-02-14 2013-12-31 13F UNION PAC COM 907818108 56,020 37,559 203.45 9,411 228.14 1.0505
2013-11-08 2013-09-30 13F UNION PAC COM 907818108 18,461 2,277 14.07 2,868 14.86 0.2376
2013-08-09 2013-06-30 13F UNION PAC COM 907818108 16,184 16,184 2,497 0.2694
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.