MDU Resources Group, Inc.
MX ˙ BMV ˙ US5526901096
SecurityMX:MDU / MDU Resources Group, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership22,866 shares
Latest Disclosed Value $ 473,784
Bnp Paribas Arbitrage, Sa reports 75.19% increase in ownership of MDU / MDU Resources Group, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 22,866 shares of MDU Resources Group, Inc. (MX:MDU) valued at $473,784 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 13,052 shares of MDU Resources Group, Inc.. This represents a change in shares of 75.19% 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)
2026-05-12 2026-03-31 13F MDU Resources Group Equity 552690109 22,866 9,814 75.19 474 86.22 0.0000
2026-02-10 2025-12-31 13F MDU Resources Group Equity 552690109 13,052 -3,707 -22.12 255 -14.77 0.0001
2025-11-13 2025-09-30 13F MDU Resources Group Equity 552690109 16,759 -18,320 -52.22 298 -48.97 0.0002
2025-08-14 2025-06-30 13F MDU Resources Group Equity 552690109 35,079 21,895 166.07 585 163.06 0.0003
2025-05-14 2025-03-31 13F MDU Resources Group Equity 552690109 13,184 -21,275 -61.74 223 -64.19 0.0001
2025-02-14 2024-12-31 13F MDU Resources Group Equity 552690109 34,459 9,652 38.91 621 -8.69 0.0003
2024-11-13 2024-09-30 13F MDU Resources Group Equity 552690109 24,807 -11,958 -32.53 680 -26.36 0.0005
2024-08-13 2024-06-30 13F MDU Resources Group Equity 552690109 36,765 -134,127 -78.49 923 -78.59 0.0008
2024-05-01 2024-03-31 13F MDU Resources Group Equity 552690109 170,892 63,881 59.70 4,306 103.31 0.0038
2024-02-14 2023-12-31 13F/A-2 MDU Resources Group Equity 552690109 107,011 65,161 155.70 2,119 158.61 0.0024
2024-02-07 2023-12-31 13F/A-1 MDU Resources Group Equity 552690109 107,011 65,161 2,119 0.0003
2024-02-07 2023-12-31 13F MDU Resources Group Equity 552690109 107,011 2,119
2023-11-14 2023-09-30 13F MDU Resources Group Equity 552690109 41,850 12,691 43.52 819 34.26 0.0011
2023-08-09 2023-06-30 13F MDU Resources Group Equity 552690109 29,159 17,093 141.66 611 66.21 0.0008
2023-05-12 2023-03-31 13F MDU RESOURCES GROUP EQUITY 552690109 12,066 -50,702 -80.78 368 -80.72 0.0005
2023-02-14 2022-12-31 13F MDU Resources Group Equity 552690109 62,768 35,576 130.83 1,904 156.26 0.0029
2022-11-16 2022-09-30 13F/A-1 MDU Resources Group Equity 552690109 27,192 -28,851 -51.48 744 -50.86 0.0012
2022-11-15 2022-09-30 13F MDU Resources Group Equity 552690109 27,192 -28,851 744 0.0002
2022-08-12 2022-06-30 13F MDU Resources Group Equity 552690109 56,043 -16,171 -22.39 1,513 -21.41 0.0024
2022-05-18 2022-03-31 13F/A-1 MDU Resources Group Equity 552690109 72,214 -18,591 -20.47 1,925 -31.29 0.0026
2022-02-09 2021-12-31 13F MDU RESOURCES GROUP EQUITY 552690109 90,805 -145,277 -61.54 2,800 -60.02 0.0040
2021-11-16 2021-09-30 13F/A-1 MDU RESOURCES GROUP EQUITY 552690109 236,082 -5,303 -2.20 7,005 -7.42 0.0099
2021-11-12 2021-09-30 13F MDU RESOURCES GROUP EQUITY 552690109 62,644 -178,741 1,409 0.0000
2021-08-10 2021-06-30 13F MDU RESOURCES GROUP EQUITY 552690109 241,385 193,945 408.82 7,565 404.67 0.0100
2021-05-07 2021-03-31 13F MDU RESOURCES GROUP EQUITY 552690109 47,440 2,057 4.53 1,500 25.44 0.0022
2021-02-10 2020-12-31 13F MDU RESOURCES GROUP EQUITY 552690109 45,383 -17,261 -27.55 1,195 -15.19 0.0022
2020-10-30 2020-09-30 13F MDU RESOURCES GROUP EQUITY 552690109 62,644 -8,590 -12.06 1,409 -10.77 0.0020
2020-08-06 2020-06-30 13F MDU RESOURCES GROUP EQUITY 552690109 71,234 3,842 5.70 1,580 9.05 0.0028
2020-05-13 2020-03-31 13F MDU RESOURCES GROUP EQUITY 552690109 67,392 -198,183 -74.62 1,449 -81.65 0.0030
2020-02-12 2019-12-31 13F MDU RESOURCES GROUP EQUITY 552690109 265,575 -67,458 -20.26 7,890 -15.96 0.0144
2019-11-07 2019-09-30 13F MDU RESOURCES GROUP EQUITY 552690109 333,033 -142,178 -29.92 9,388 -23.43 0.0167
2019-07-30 2019-06-30 13F MDU RESOURCES GROUP EQUITY 552690109 475,211 214,240 82.09 12,260 81.90 0.0244
2019-04-25 2019-03-31 13F MDU RESOURCES GROUP EQUITY 552690109 260,971 254,230 3,771.40 6,741 4,112.50 0.0146
2019-02-12 2018-12-31 13F MDU RESOURCES GROUP EQUITY 552690109 6,741 -28,690 -80.97 161 -82.42 0.0004
2018-11-07 2018-09-30 13F MDU RESOURCES GROUP EQUITY 552690109 35,431 8,444 31.29 910 17.72 0.0013
2018-07-25 2018-06-30 13F MDU RESOURCES GROUP EQUITY 552690109 26,987 14,988 124.91 774 129.38 0.0013
2018-05-11 2018-03-31 13F MDU RESOURCES GROUP EQUITY 552690109 11,999 -30,721 -71.91 338 -70.64 0.0006
2018-03-05 2017-12-31 13F/A-1 MDU RESOURCES GROUP EQUITY 552690109 42,720 -30,444 -41.61 1,148 -39.52 0.0020
2018-02-01 2017-12-31 13F MDU RESOURCES GROUP EQUITY 552690109 42,720 -30,444 1,148
2017-11-03 2017-09-30 13F MDU RES GROUP STOCK 552690109 73,164 -10,159 -12.19 1,899 -13.06 0.0046
2017-08-03 2017-06-30 13F MDU RES GROUP STOCK 552690109 83,323 31,701 61.41 2,183 54.60 0.0066
2017-05-03 2017-03-31 13F MDU RES GROUP STOCK 552690109 51,622 -21,526 -29.43 1,413 -32.89 0.0037
2017-02-14 2016-12-31 13F MDU RES GROUP STOCK 552690109 73,148 48,239 193.66 2,104 232.39 0.0099
2016-10-05 2016-09-30 13F * MDU RES GROUP INC COM STOCK 552690109 24,909 -75,451 -75.18 634 -73.71 0.0026
2016-07-06 2016-06-30 13F * MDU RES GROUP INC COM STOCK 552690109 100,360 35,795 55.44 2,409 91.72 0.0109
2016-04-22 2016-03-31 13F * MDU RES GROUP INC COM STOCK 552690109 64,565 43,420 205.34 1,256 224.55 0.0053
2016-04-19 2015-12-31 13F/A-1 * MDU RES GROUP INC COM STOCK 552690109 21,145 18,607 733.14 387 800.00 0.0019
2016-02-10 2015-12-31 13F * MDU RES GROUP INC COM STOCK 552690109 21,145 387
2015-11-13 2015-09-30 13F * MDU RES GROUP INC COM STOCK 552690109 2,538 -32,111 -92.68 44 -93.64 0.0001
2015-08-14 2015-06-30 13F MDU RES GROUP INC COM STOCK 552690109 34,649 -18,613 -34.95 677 -40.49 0.0019
2015-05-15 2015-03-31 13F * MDU RES GROUP INC COM STOCK 552690109 53,262 48,732 1,075.76 1,137 971.70 0.0031
2015-03-10 2014-12-31 13F/A-1 * MDU RES GROUP INC COM STOCK 552690109 4,530 -82,599 -94.80 106 -95.63 0.0004
2015-02-11 2014-12-31 13F * MDU RES GROUP INC COM STOCK 552690109 4,530 106
2014-11-12 2014-09-30 13F * MDU RES GROUP INC COM STOCK 552690109 87,129 11,458 15.14 2,423 -8.77 0.0021
2014-08-14 2014-06-30 13F/A-1 * MDU RES GROUP INC COM STOCK 552690109 75,671 -9,645 -11.31 2,656 -12.08 0.0025
2014-08-14 2014-06-30 13F MDU RES GROUP INC COM STOCK 552690109 75,671 2,656
2014-05-13 2014-03-31 13F MDU RES GROUP STOCK 552690109 85,316 43,117 102.18 3,022 134.37 0.0023
2014-04-02 2013-12-31 13F/A-1 MDU RES GROUP STOCK 552690109 42,199 13,527 47.18 1,289 60.92 0.0009
2014-02-12 2013-12-31 13F MDU RES GROUP STOCK 552690109 42,199 1,289
2013-11-13 2013-09-30 13F MDU RES GROUP STOCK 552690109 28,672 8,943 45.33 802 56.75 0.0006
2013-08-13 2013-06-30 13F MDU RES GROUP STOCK 552690109 19,729 19,729 511 0.0004
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.