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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 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
9,995,909
combined, among listed positions
Reported value
$207m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 19 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,046,403.

Managers listing MDU in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Invesco Ltd1,881,002$39munder 0.1%Trimmed-62,14912 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,226,667$25munder 0.1%Added+37,47127 Oct 2026 (the filing on sec.gov)
Citadel Advisors LLC1,094,809$23munder 0.1%Trimmed-609,82215 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC929,844$19munder 0.1%Added+616,79414 May 2026 (the filing on sec.gov)
MFS Investment Management853,787$18munder 0.1%Trimmed-45,36114 May 2026 (the filing on sec.gov)
Two Sigma Investments LP482,576$10.0munder 0.1%Added+283,46215 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.470,588$9.8munder 0.1%Added+453,77115 May 2026 (the filing on sec.gov)
Man Group PLC378,425$7.8munder 0.1%Added+159,37315 May 2026 (the filing on sec.gov)
Millennium Management LLC333,965$6.9munder 0.1%Trimmed-19,59415 May 2026 (the filing on sec.gov)
Verition Fund Management LLC300,000$6.2munder 0.1%Added+204,21215 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC284,992$5.9munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP280,708$5.8munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc186,650$3.9munder 0.1%Added+21,83715 May 2026 (the filing on sec.gov)
GAMCO Investors Inc186,421$3.9munder 0.1%Trimmed-1,58114 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC170,054$3.5munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC161,902$3.3munder 0.1%Trimmed-405,23115 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)149,241$3.1munder 0.1%Trimmed-286,26515 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP132,788$2.8munder 0.1%Added+70,93315 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd93,228$1.9munder 0.1%Added+12,30018 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP80,838$1.7munder 0.1%Added+67,12115 May 2026 (the filing on sec.gov)
AllianceBernstein LP76,918$1.5munder 0.1%Trimmed-223,77915 May 2026 (the filing on sec.gov)
Wellington Management Group LLP64,798$1.3munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Bridgewater Associates LP52,626$1.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Winton Group Ltd50,262$1.0munder 0.1%Added+24,34112 May 2026 (the filing on sec.gov)
Quantbot Technologies LP33,839$701kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, 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 (8)

Exited (2)

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 →