MDU RESOURCES GROUP INC (MDU) Stock Institutional Trading Activity
MDU RESOURCES GROUP INC (MDU) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Sequoia Financial Advisors, Hancock Classic Value, Mairs & Power Growth Fund, and Parnassus Endeavor Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- MDU RESOURCES GROUP INC (MDU) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2014 | Mairs & Power Growth Fund | Buy | 137,665 | 2,287,900 | $53,766 |
| Q4 2014 | Parnassus Endeavor Fund | Buy | 1,826,336 | 10,098,329 | $237,311 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 111,300 | 628,550 | $17,480 |
| Q3 2014 | Mairs & Power Growth Fund | Buy | 554,774 | 2,150,235 | $59,798 |
| Q3 2014 | Parnassus Endeavor Fund | Buy | 1,851,325 | 8,271,993 | $230,044 |
| Q2 2014 | Sequoia Financial Advisors | Buy | 350 | 7,672 | $269 |
| Q2 2014 | Renaissance Technologies LLC | Buy | 34,462 | 517,250 | $18,155 |
| Q2 2014 | Mairs & Power Growth Fund | Buy | 210 | 1,595,461 | $56,001 |
| Q2 2014 | Parnassus Endeavor Fund | Buy | 156,444 | 6,420,668 | $225,365 |
| Q1 2014 | Sequoia Financial Advisors | Buy | 7,322 | 7,322 | $251 |
| Q1 2014 | Renaissance Technologies LLC | Buy | 307,138 | 482,788 | $16,564 |
| Q1 2014 | Mairs & Power Growth Fund | Buy | 322,394 | 1,595,251 | $54,733 |
| Q1 2014 | Parnassus Endeavor Fund | Sell | -362,860 | 6,264,224 | $214,926 |
| Q4 2013 | Renaissance Technologies LLC | Sell | -49,300 | 175,650 | $5,366 |
| Q4 2013 | Mairs & Power Growth Fund | Buy | 359,025 | 1,272,857 | $38,886 |
| Q4 2013 | Parnassus Endeavor Fund | Sell | -576,905 | 6,627,084 | $202,457 |
| Q3 2013 | Renaissance Technologies LLC | Sell | -131,200 | 224,950 | $6,292 |
| Q3 2013 | Mairs & Power Growth Fund | Buy | 447,310 | 913,832 | $25,560 |
| Q3 2013 | Parnassus Endeavor Fund | Sell | -442,314 | 7,203,989 | $201,496 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 356,150 | 356,150 | $9,228 |
| Q2 2013 | Mairs & Power Growth Fund | Buy | 466,522 | 466,522 | $12,088 |
| Q2 2013 | Parnassus Endeavor Fund | Buy | 7,646,303 | 7,646,303 | $198,116 |
Frequently asked questions about MDU activity
Which institutional owners are buying MDU?
Institutional owners buying MDU include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in MDU activity?
"Buy" means an investor increased their reported position in MDU compared to the prior reporting period. This reflects growing exposure to MDU RESOURCES GROUP INC (MDU) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in MDU increasing?
Institutional interest in MDU can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.