MDU RESOURCES GROUP INC (MDU) Institutional Ownership Changes & 13F Activity

MDU RESOURCES GROUP INC (MDU). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Sequoia Financial Advisors, Hancock Classic Value, Mairs & Power Growth Fund, and Parnassus Endeavor Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018Parnassus Endeavor FundBuy155,25615,840,980$446,082
Q1 2018Renaissance Technologies LLCSell-10,40040,000$1,126
Q1 2018Mairs & Power Growth FundSell-5,312116,319$3,276
Q4 2017Mairs & Power Growth FundSell-70,739121,631$3,269
Q4 2017Parnassus Endeavor FundSell-13,93415,685,724$421,632
Q3 2017Parnassus Endeavor FundBuy307,87615,699,658$407,406
Q3 2017Mairs & Power Growth FundSell-131,645192,370$4,992
Q2 2017Parnassus Endeavor FundBuy762,92715,391,782$403,265
Q2 2017Mairs & Power Growth FundSell-116,147324,015$8,489
Q1 2017Parnassus Endeavor FundBuy753,32814,628,855$388,561
Q1 2017Mairs & Power Growth FundSell-39,850440,162$12,047
Q4 2016Parnassus Endeavor FundBuy174,11113,875,527$399,199
Q4 2016Mairs & Power Growth FundSell-3,660480,012$13,810
Q3 2016Parnassus Endeavor FundBuy674,88813,701,416$348,564
Q3 2016Renaissance Technologies LLCSell-106,75050,400$1,282
Q3 2016Mairs & Power Growth FundSell-54,214483,672$12,305
Q2 2016Renaissance Technologies LLCSell-814,000157,150$3,772
Q2 2016Parnassus Endeavor FundBuy333,19113,026,528$312,637
Q2 2016Mairs & Power Growth FundSell-127,607537,886$12,909
Q1 2016Parnassus Endeavor FundSell-1,488,15612,693,337$247,012
Q1 2016Mairs & Power Growth FundSell-1,203,385665,493$12,951
Q1 2016Renaissance Technologies LLCBuy915,600971,150$18,899
Q4 2015Parnassus Endeavor FundBuy1,058,73214,181,493$259,805
Q4 2015Mairs & Power Growth FundSell-301,4281,868,878$34,238
Q4 2015Renaissance Technologies LLCSell-210,80055,550$1,018
Q3 2015Parnassus Endeavor FundBuy2,794,79513,122,761$217,005
Q3 2015Mairs & Power Growth FundSell-399,3092,170,306$37,329
Q2 2015Parnassus Endeavor FundBuy413,54910,327,966$201,705
Q2 2015Mairs & Power Growth FundBuy73,8202,569,615$50,185
Q1 2015Renaissance Technologies LLCSell-252,100266,350$5,684

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.

Related MDU Institutional Insights