MDU Resources Group, Inc.
US ˙ NYSE ˙ US5526901096

SecurityMDU / MDU Resources Group, Inc.
InstitutionFox Run Management, L.l.c.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Fox Run Management, L.l.c. closes position in MDU / MDU Resources Group, Inc.

On February 11, 2026 - Fox Run Management, L.l.c. filed a 13F-HR form disclosing ownership of 0 shares of MDU Resources Group, Inc. (US:MDU) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 49,366 shares of MDU Resources Group, Inc.. The current value of the position is $0 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)
2026-02-11 2025-12-31 13F MDU RES GROUP COM 552690109 0 -100.00 0
2025-11-12 2025-09-30 13F MDU RES GROUP COM 552690109 49,366 -16,578 -25.14 879 -20.02 0.1371
2025-08-06 2025-06-30 13F MDU RES GROUP COM 552690109 65,944 65,944 1,099 0.1832
2025-02-11 2024-12-31 13F MDU RES GROUP COM 552690109 0 -39,673 -100.00 0 -100.00
2024-11-12 2024-09-30 13F MDU RES GROUP COM 552690109 39,673 39,673 1,087 0.2420
2024-08-13 2024-06-30 13F MDU RES GROUP COM 552690109 0 -33,527 -100.00 0 -100.00
2024-05-13 2024-03-31 13F MDU RES GROUP COM 552690109 33,527 -14,825 -30.66 845 -11.81 0.1822
2024-02-13 2023-12-31 13F MDU RES GROUP COM 552690109 48,352 48,352 957 0.2442
2023-11-07 2023-09-30 13F MDU RES GROUP COM 552690109 0 -21,713 -100.00 0 -100.00
2023-08-11 2023-06-30 13F MDU RES GROUP COM 552690109 21,713 -7,976 -26.87 455 -49.78 0.1279
2023-05-12 2023-03-31 13F MDU RES GROUP COM 552690109 29,689 13,032 78.24 905 79.01 0.2948
2023-02-07 2022-12-31 13F MDU RES GROUP COM 552690109 16,657 -9,192 -35.56 505 -28.57 0.2029
2022-11-07 2022-09-30 13F MDU RES GROUP COM 552690109 25,849 25,849 707 0.2750
2022-08-12 2022-06-30 13F MDU RES GROUP COM 552690109 0 -22,205 -100.00 0 -100.00
2022-05-10 2022-03-31 13F MDU RES GROUP COM 552690109 22,205 2,473 12.53 592 -2.79 0.3296
2022-02-09 2021-12-31 13F MDU RES GROUP COM 552690109 19,732 19,732 609 0.3589
2021-11-15 2021-09-30 13F MDU RES GROUP COM 552690109 0 -6,511 -100.00 0 -100.00
2021-08-05 2021-06-30 13F MDU RES GROUP COM 552690109 6,511 -2,368 -26.67 204 -27.40 0.1856
2021-05-17 2021-03-31 13F MDU RES GROUP COM 552690109 8,879 8,879 281 0.5067
2020-05-08 2020-03-31 13F MDU RES GROUP COM 552690109 0 -18,630 -100.00 0 -100.00
2020-02-14 2019-12-31 13F MDU RES GROUP COM 552690109 18,630 3,920 26.65 553 33.25 0.4451
2019-10-15 2019-09-30 13F/A-1 MDU RES GROUP COM 552690109 14,710 -13,332 -47.54 415 -42.60 0.3778
2019-10-11 2019-09-30 13F MDU RES GROUP COM 552690109 28,042 0 723
2019-07-17 2019-06-30 13F MDU RES GROUP COM 552690109 28,042 15,148 117.48 723 117.12 0.4802
2019-10-17 2019-03-31 13F MDU RES GROUP COM 552690109 12,894 12,894 333 0.1881
2019-01-15 2018-12-31 13F MDU RES GROUP COM 552690109 0 -16,638 -100.00 0 -100.00
2018-10-05 2018-09-30 13F MDU RES GROUP COM 552690109 16,638 510 3.16 427 -7.78 0.1861
2018-07-17 2018-06-30 13F MDU RES GROUP COM 552690109 16,128 -8,121 -33.49 463 -32.21 0.1469
2018-04-17 2018-03-31 13F MDU RES GROUP COM 552690109 24,249 24,249 683 0.1656
2018-01-18 2017-12-31 13F MDU RES GROUP COM 552690109 0 -11,200 -100.00 0 -100.00
2017-10-23 2017-09-30 13F MDU RES GROUP COM 552690109 11,200 11,200 291 0.0824
2017-04-17 2017-03-31 13F MDU RES GROUP COM 552690109 0 -9,000 -100.00 0 -100.00
2017-01-10 2016-12-31 13F MDU RES GROUP COM 552690109 9,000 9,000 259 0.1361
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.