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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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2020Parnassus Endeavor FundBuy71,2633,157,636$71,047
Q2 2020Mairs & Power Growth FundSell-2,60044,583$989
Q2 2020Renaissance Technologies LLCSell-772,000954,633$21,174
Q2 2020Parnassus Endeavor FundBuy476,7703,086,373$68,456
Q1 2020Mairs & Power Growth FundSell-11,12847,183$1,014
Q1 2020Renaissance Technologies LLCBuy470,2381,726,633$37,123
Q1 2020Parnassus Endeavor FundSell-507,9652,609,603$56,106
Q4 2019Renaissance Technologies LLCBuy68,3001,256,395$37,327
Q4 2019Mairs & Power Growth FundSell-5,63258,311$1,732
Q4 2019Parnassus Endeavor FundBuy873,3593,117,568$92,623
Q3 2019Renaissance Technologies LLCBuy247,0451,188,095$33,492
Q3 2019Mairs & Power Growth FundSell-1,55063,943$1,803
Q3 2019Parnassus Endeavor FundBuy173,8312,244,209$63,264
Q2 2019Renaissance Technologies LLCBuy319,400941,050$24,279
Q2 2019Mairs & Power Growth FundSell-3,60065,493$1,690
Q2 2019Parnassus Endeavor FundSell-6,767,0362,070,378$53,416
Q1 2019Renaissance Technologies LLCSell-34,100621,650$16,057
Q1 2019Mairs & Power Growth FundSell-45069,093$1,785
Q1 2019Parnassus Endeavor FundSell-391,3048,837,414$228,270
Q4 2018Renaissance Technologies LLCBuy76,700655,750$15,633
Q4 2018Mairs & Power Growth FundSell-5,98569,543$1,658
Q4 2018Parnassus Endeavor FundSell-4,860,1949,228,718$220,013
Q3 2018Renaissance Technologies LLCBuy539,050579,050$14,876
Q3 2018Mairs & Power Growth FundSell-5,57875,528$1,940
Q3 2018Parnassus Endeavor FundSell-1,767,40214,088,912$361,944
Q2 2018Mairs & Power Growth FundSell-35,21381,106$2,326
Q2 2018Parnassus Endeavor FundBuy15,33415,856,314$454,759
Q1 2018Renaissance Technologies LLCSell-10,40040,000$1,126
Q1 2018Mairs & Power Growth FundSell-5,312116,319$3,276
Q1 2018Parnassus Endeavor FundBuy155,25615,840,980$446,082

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.