BISMARCK, N.D. (AP) — BISMARCK, N.D. (AP) — MDU Resources Group Inc. (MDU) on Thursday reported second-quarter earnings of $21.3…BISMARCK, N.D. (AP) — BISMARCK, N.D. (AP) — MDU Resources Group Inc. (MDU) on Thursday reported second-quarter earnings of $21.3 million. Earnings, adjusted to account for discontinued operations, were 9 cents per share. The average estimate of three analysts surveyed by Zacks Investment Research was for earnings of 8 cents per share. MDU Resources expects full-year earnings to be 93 cents to $1 per share. Access a Zacks stock report on MDU at https://www.zacks.com/ap/MDUCopyright © 2026 The Associated Press.