Ticker · CUSIP 552690109
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.
SEC event timeline
20 events
- AQR Capital Management trimmed2026-02-17−247,959 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+173,055 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−773,350 shares · 2025Q413F
- T. Rowe Price added2026-02-17+10,056 shares · 2025Q413F
- D.E. Shaw & Co. opened position2026-02-17+16,817 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+526,332 shares · 2025Q413F
- −149,167 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+266,300 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+3,054,154 shares · 2025Q413F
- Mario Gabelli (GAMCO) trimmed2026-02-05−9,995 shares · 2025Q413F
- AQR Capital Management trimmed2025-11-14−298,182 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+55,861 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−94,408 shares · 2025Q313F
- T. Rowe Price added2025-11-14+10,759 shares · 2025Q313F
- Ray Dalio (Bridgewater Associates) added2025-11-13+129,321 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−139,050 shares · 2025Q313F
- Jeremy Grantham (GMO) exited2025-11-13−11,197 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−2,404,768 shares · 2025Q313F
- Norges Bank (Norway SWF) added2025-11-12+29,481 shares · 2024Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−12,046 shares · 2025Q313F
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
- Norges Bank (Norway SWF)+3,054,154$59.6M
- D.E. Shaw & Co.+16,817$328K
Added to4
- Ken Griffin (Citadel Advisors)+526,332$10.3M
- Renaissance Technologies+266,300$5.2M
- Two Sigma Investments+173,055$3.4M
- T. Rowe Price+10,056$196
Trimmed3
- Izzy Englander (Millennium Mgmt)−773,350$15.1M
- AQR Capital Management−247,959$4.8M
- Mario Gabelli (GAMCO)−9,995$195K
Exited1
- Ray Dalio (Bridgewater Associates)−149,167$2.7M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined 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
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 3.05M | $60M |
| 2 | Ken Griffin Citadel Advisors | 1.70M | $33M |
| 3 | AQR Capital Management | 567.1K | $11M |
| 4 | Izzy Englander Millennium Mgmt | 353.6K | $7M |
| 5 | Renaissance Technologies | 313.1K | $6M |
| 6 | Two Sigma Investments | 199.1K | $4M |
| 7 | Mario Gabelli GAMCO | 188.0K | $4M |
| 8 | D.E. Shaw & Co. | 16.8K | $328K |
| 9 | Ken Griffin Citadel Advisors | 11.3K | $221K |
| 10 | T. Rowe Price | 164.8K | $3K |
Recent moves
20 transactions
- +10,056 · 2025Q4
- +526,332 · 2025Q4
- +173,055 · 2025Q4
- −247,959 · 2025Q4
- +16,817 · 2025Q4
- −773,350 · 2025Q4
- −149,167 · 2025Q4
- +266,300 · 2025Q4
- +3,054,154 · 2025Q4
- −9,995 · 2025Q4
- −94,408 · 2025Q3
- +55,861 · 2025Q3
- −298,182 · 2025Q3
- +10,759 · 2025Q3
- −139,050 · 2025Q3
- −2,404,768 · 2025Q3
- +129,321 · 2025Q3
- −11,197 · 2025Q3
- −12,046 · 2025Q3
- +29,481 · 2024Q3
Embed this chart
Paste this iframe anywhere to embed the live MDU chart.
<iframe src="https://openstocks.me/embed/stock/MDU" width="100%" height="480" frameborder="0" loading="lazy" title="MDU chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>