MDU Resources Group, Inc.
MX ˙ BMV ˙ US5526901096
SecurityMX:MDU / MDU Resources Group, Inc.
InstitutionHighTower Advisors, LLC
Latest Disclosed Ownership75,880 shares
Latest Disclosed Value $ 1,572,199
HighTower Advisors, LLC reports 7.24% increase in ownership of MDU / MDU Resources Group, Inc.

On May 5, 2026 - HighTower Advisors, LLC filed a 13F-HR form disclosing ownership of 75,880 shares of MDU Resources Group, Inc. (MX:MDU) valued at $1,572,199 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 70,756 shares of MDU Resources Group, Inc.. This represents a change in shares of 7.24% 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)
2026-05-05 2026-03-31 13F MDU RES GROUP COM 552690109 75,880 5,124 7.24 1,572 13.83 0.0017
2026-02-06 2025-12-31 13F MDU RES GROUP COM 552690109 70,756 867 1.24 1,381 11.01 0.0015
2025-11-07 2025-09-30 13F MDU RES GROUP COM 552690109 69,889 34,898 99.73 1,245 113.38 0.0014
2025-08-11 2025-06-30 13F MDU RES GROUP COM 552690109 34,991 345 1.00 583 -0.34 0.0007
2025-05-13 2025-03-31 13F MDU RES GROUP COM 552690109 34,646 -4,257 -10.94 586 -16.55 0.0008
2025-02-07 2024-12-31 13F MDU RES GROUP COM 552690109 38,903 6,164 18.83 701 -21.76 0.0010
2024-11-14 2024-09-30 13F MDU RES GROUP COM 552690109 32,739 641 2.00 896 10.89 0.0013
2024-08-13 2024-06-30 13F MDU RES GROUP COM 552690109 32,098 -732 -2.23 808 -2.65 0.0012
2024-05-06 2024-03-31 13F MDU RES GROUP COM 552690109 32,830 -11,910 -26.62 830 -6.21 0.0013
2024-02-12 2023-12-31 13F MDU RES GROUP COM 552690109 44,740 -1,193 -2.60 885 -1.99 0.0015
2023-11-08 2023-09-30 13F MDU RES GROUP COM 552690109 45,933 1,791 4.06 903 -2.80 0.0017
2023-08-14 2023-06-30 13F MDU RES GROUP COM 552690109 44,142 9,928 29.02 929 -11.19 0.0018
2023-05-12 2023-03-31 13F MDU RES GROUP COM 552690109 34,214 -2,432 -6.64 1,046 -6.52 0.0023
2023-02-09 2022-12-31 13F MDU RES GROUP COM 552690109 36,646 23,254 173.64 1,119 206.58 0.0026
2022-11-09 2022-09-30 13F MDU RES GROUP COM 552690109 13,392 -280 -2.05 365 -0.82 0.0010
2022-08-10 2022-06-30 13F MDU RES GROUP COM 552690109 13,672 24 0.18 368 1.10 0.0010
2022-05-12 2022-03-31 13F MDU RES GROUP COM 552690109 13,648 -1,544 -10.16 364 -22.55 0.0008
2022-02-10 2021-12-31 13F MDU RES GROUP COM 552690109 15,192 2,162 16.59 470 21.45 0.0010
2021-11-12 2021-09-30 13F MDU RES GROUP COM 552690109 13,030 1,794 15.97 387 9.94 0.0010
2021-08-06 2021-06-30 13F MDU RES GROUP COM 552690109 11,236 -63,349 -84.94 352 -85.04 0.0010
2021-05-10 2021-03-31 13F MDU RES GROUP COM 552690109 74,585 64,679 652.93 2,353 801.53 0.0074
2021-02-10 2020-12-31 13F MDU RES GROUP COM 552690109 9,906 9,906 261 0.0011
2017-11-14 2017-09-30 13F MDU RES GROUP COM 552690109 0 -9,105 -100.00 0 -100.00
2017-09-22 2017-06-30 13F/A-1 MDU RES GROUP COM 552690109 9,105 594 6.98 240 3.45 0.0021
2017-08-14 2017-06-30 13F MDU RES GROUP COM 552690109 9,105 594 240
2017-05-15 2017-03-31 13F MDU RES GROUP COM 552690109 8,511 8,511 232 0.0022
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.