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MDU in the 13F filings

Mdu Res Group Inc · CUSIP 552690109

Sector · UtilitiesTheme · Energy and power infrastructure· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 1 listed it in both
Shares listed
8,980,106
combined, among listed positions
Reported value
$175m
combined, at the quarter end

Among the 92 comparable managers: 10 buyers (opened or added shares) and 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,430,594.

Managers listing MDU in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Invesco Ltd1,943,151$38munder 0.1%Trimmed-28,35119 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC1,704,631$33munder 0.1%Added+526,33217 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,189,196$23munder 0.1%Trimmed-8,15327 Oct 2026 (the filing on sec.gov)
MFS Investment Management899,148$18munder 0.1%Trimmed-32,17222 Jan 2026 (the filing on sec.gov)
AQR Capital Management LLC567,133$11munder 0.1%Trimmed-247,95917 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)435,506$8.5munder 0.1%Trimmed-303,11117 Feb 2026 (the filing on sec.gov)
Millennium Management LLC353,559$6.9munder 0.1%Trimmed-773,35017 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC313,050$6.1munder 0.1%Added+266,30012 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP300,697$5.9munder 0.1%Added+193,62417 Feb 2026 (the filing on sec.gov)
Man Group PLC219,052$4.3munder 0.1%Added+107,71317 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP199,114$3.9munder 0.1%Added+173,05517 Feb 2026 (the filing on sec.gov)
GAMCO Investors Inc188,002$3.7munder 0.1%Trimmed-9,9955 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc164,813$3.2munder 0.1%Added+10,05617 Feb 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP164,190$3.2munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC95,788$1.9munder 0.1%Trimmed-155,77813 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd80,928$1.6munder 0.1%Added+87517 Feb 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP61,855$1.2munder 0.1%Added+5,72817 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP30,600$597kunder 0.1%Trimmed-20,80017 Feb 2026 (the filing on sec.gov)
Winton Group Ltd25,921$506kunder 0.1%Trimmed-11,88411 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.16,817$328kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP13,717$268kunder 0.1%Trimmed-22,92017 Feb 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC13,238$258kunder 0.1%Trimmed-7,44017 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Exited (9)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
3 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

035810201420182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MDU by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$213mn.a.n.a.
Q3 20132$167mn.a.n.a.
Q4 20133$198mn.a.n.a.
Q1 20142$246mn.a.n.a.
Q2 20143$284mn.a.n.a.
Q3 20145$269mn.a.n.a.
Q4 20145$36mn.a.n.a.
Q1 20155$21mn.a.n.a.
Q2 20151$3.4mn.a.n.a.
Q3 20152$2.8mn.a.n.a.
Q4 20152$14mn.a.n.a.
Q3 20161$926kn.a.n.a.
Q4 20164$7.4mn.a.n.a.
Q1 20171$17mn.a.n.a.
Q2 20171$21mn.a.n.a.
Q3 20173$56mn.a.n.a.
Q4 20176$87mn.a.n.a.
Q1 20187$58mn.a.n.a.
Q2 20185$30mn.a.n.a.
Q3 20186$32mn.a.n.a.
Q4 201810$110mn.a.n.a.
Q1 201910$136mn.a.n.a.
Q2 20196$162mn.a.n.a.
Q3 20199$294mn.a.n.a.
Q4 20197$241mn.a.n.a.
Q1 20208$226mn.a.n.a.
Q2 20208$197mn.a.n.a.
Q3 20206$172mn.a.n.a.
Q4 20207$128mn.a.n.a.
Q1 20216$90mn.a.n.a.
Q2 20215$89mn.a.n.a.
Q3 20215$79mn.a.n.a.
Q4 20216$89mn.a.n.a.
Q1 20227$73mn.a.n.a.
Q2 20222$18mn.a.n.a.
Q3 20222$9.3mn.a.n.a.
Q4 20221$2.3mn.a.n.a.
Q1 20233$3.4mn.a.n.a.
Q2 20232$3.3mn.a.n.a.
Q3 20233$49mn.a.n.a.
Q4 20234$74m31
Q1 20245$66m23
Q2 20242$66m12
Q3 20243$64m12
Q4 20241$1.0m10
Q1 20253$6.8m30
Q2 20253$5.5m21
Q3 20252$4.2m02
Q4 20251$3.7m1021
Q1 20263$13m1910
Q2 20261$3.8m1313

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MDU and GEV →MDU and XOM →MDU and CVX →Choose a stock to compare with MDU →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MDU, latest filings →Back to the 13F Explorer →