Ticker · CUSIP 552690109
···Share
Holders (tracked)
10
Combined shares
6,572,573
Combined value
$125.08M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
10112024Q12025Q4

SEC event timeline

20 events
  1. −247,959 shares · 2025Q4
    13F
  2. +173,055 shares · 2025Q4
    13F
  3. −773,350 shares · 2025Q4
    13F
  4. +10,056 shares · 2025Q4
    13F
  5. +16,817 shares · 2025Q4
    13F
  6. +526,332 shares · 2025Q4
    13F
  7. −149,167 shares · 2025Q4
    13F
  8. +266,300 shares · 2025Q4
    13F
  9. +3,054,154 shares · 2025Q4
    13F
  10. −9,995 shares · 2025Q4
    13F
  11. −298,182 shares · 2025Q3
    13F
  12. +55,861 shares · 2025Q3
    13F
  13. −94,408 shares · 2025Q3
    13F
  14. +10,759 shares · 2025Q3
    13F
  15. +129,321 shares · 2025Q3
    13F
  16. −139,050 shares · 2025Q3
    13F
  17. −11,197 shares · 2025Q3
    13F
  18. −2,404,768 shares · 2025Q3
    13F
  19. +29,481 shares · 2024Q3
    13F
  20. −12,046 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to4
Trimmed3

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
14
$52.65B
2022Q2
11
$49.54B
2022Q3
12
$51.4M
2022Q4
11
$670.8M
2023Q1
13
$686.8M
2023Q2
11
$514.0M
2023Q3
15
$539.3M
2023Q4
12
$521.5M
2024Q1
11
$623.5M
2024Q2
11
$600.7M
2024Q3
10
$164.8M
2024Q4
8
$78.1M
2025Q1
9
$59.7M
2025Q2
10
$90.3M
2025Q3
8
$63.1M
2025Q4
10
$125.1M

Who owns MDU

10 super-investors · 2025Q4
Tracked stake
6.57M
shares
Combined value
$125M
% of shares outstanding
shares-out unknown
Quarter action mix
New2Added5Trim3
#ManagerSharesValue
1Norges Bank
Norway SWF
3.05M$60M
2Ken Griffin
Citadel Advisors
1.70M$33M
3AQR Capital Management567.1K$11M
4Izzy Englander
Millennium Mgmt
353.6K$7M
5Renaissance Technologies313.1K$6M
6Two Sigma Investments199.1K$4M
7Mario Gabelli
GAMCO
188.0K$4M
8D.E. Shaw & Co.16.8K$328K
9Ken Griffin
Citadel Advisors
11.3K$221K
10T. Rowe Price164.8K$3K

Recent moves

20 transactions
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