MDU Resources Group, Inc. (Holding Company) (MDU)
MDU moved a median of +0.17% 30 minutes after news, and 0.00% by the close. How MDU actually reacts to news — the realized, point-in-time move the market made, measured across 241 labeled events over the last three years with zero look-ahead.
MDU’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.02% | 55% | 240 |
| 30-min | +0.17% | 57% | 241 |
| 60-min | +0.12% | 56% | 241 |
| to close | 0.00% | 48% | 241 |
| Middle 50% of MDU reactions | -0.44% to +0.70% |
|---|---|
| Median reaction (30-min) | +0.17% |
| Measured reactions | 241 |
Half of all MDU Resources Group, Inc. (Holding Company) news events land between -0.44% and +0.70% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How MDU reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 20 | +0.30% | 60% | +0.53% |
| Coverage initiations | 21 | +0.33% | 71% | +0.26% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how MDU ranks against every other measured name →
That’s how MDU usually reacts — get an email when it moves on news →Email me when MDU moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MDU's baseline. Nothing else.
Recent MDU events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| MDU Resources to Webcast Third Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.64% | +1.33% | |
| WBI Energy Reaches Positive Final Investment Decision to Build Bakken East Pipeline | Press release | PR Newswire | -0.03% | -0.32% | |
| MDU Resources Announces Increased Quarterly Dividend | Press release | PR Newswire | -0.53% | +0.34% | |
| Form 10-Q MDU RESOURCES GROUP INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.89% | -0.77% | |
| Form 8-K MDU RESOURCES GROUP INC For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -0.89% | +2.98% | |
| Form S-8 MDU RESOURCES GROUP INC | SEC filing · Form S-8 | SEC EDGAR | -0.89% | -0.77% | |
| MDU Resources Reports Second Quarter 2026 Results; Advances Infrastructure Growth Opportunities | Press release | PR Newswire | -0.89% | +2.98% | |
| MDU Resources to Webcast Second Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.37% | -1.49% | |
| Montana-Dakota Utilities Announces Electric Service Agreement with Applied Digital for Proposed AI Factory | Press release | PR Newswire | -0.73% | +1.17% | |
| Form 11-K MDU RESOURCES GROUP INC For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.50% | +0.43% | |
| Form 8-K MDU RESOURCES GROUP INC For: May 11 | SEC filing · Form 8-K | SEC EDGAR | -0.37% | -0.62% | |
| MDU Resources Announces Quarterly Dividend on Common Stock | Press release | PR Newswire | -0.37% | -0.62% | |
| Form 10-Q MDU RESOURCES GROUP INC For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.83% | -1.14% | |
| Form 8-K MDU RESOURCES GROUP INC For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +0.23% | +3.79% | |
| MDU Resources Reports First Quarter 2026 Results; Progress on Proposed Bakken East Pipeline | Press release | PR Newswire | +0.23% | +3.79% | |
| MDU Resources to Webcast First Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.43% | -0.96% | |
| Form ARS MDU RESOURCES GROUP INC For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | +0.39% | +1.89% | |
| Form DEF 14A MDU RESOURCES GROUP INC For: May 11 | SEC filing · Form DEF | SEC EDGAR | +0.39% | +1.89% | |
| Form DEFA14A MDU RESOURCES GROUP INC | SEC filing · Form DEFA14A | SEC EDGAR | +0.39% | +1.89% | |
| Form 10-K MDU RESOURCES GROUP INC For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.07% | -0.49% | |
| MDU Resources Announces Quarterly Dividend on Common Stock | Press release | PR Newswire | -0.07% | -0.49% | |
| Form 8-K MDU RESOURCES GROUP INC For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | -1.48% | -3.73% | |
| MDU Resources Reports 2025 Year-End Results; Initiates 2026 Guidance | Press release | PR Newswire | -1.48% | -3.73% | |
| Form 8-K MDU RESOURCES GROUP INC For: Jan 15 | SEC filing · Form 8-K | SEC EDGAR | -0.87% | -0.68% | |
| MDU Resources to Webcast Year-End 2025 Earnings Conference Call | Press release | PR Newswire | +0.22% | +1.67% | |
| Form 8-K MDU RESOURCES GROUP INC For: Dec 23 | SEC filing · Form 8-K | SEC EDGAR | +0.40% | -0.20% | |
| Form 8-K MDU RESOURCES GROUP INC For: Dec 11 | SEC filing · Form 8-K | SEC EDGAR | -0.26% | -0.31% | |
| Form 8-K MDU RESOURCES GROUP INC For: Dec 03 | SEC filing · Form 8-K | SEC EDGAR | -0.34% | -0.31% | |
| MDU Resources Prices Public Offering of 10,152,284 Shares of Common Stock with a Forward Component | Press release | PR Newswire | +1.08% | -0.20% | |
| MDU Resources Announces Public Offering of $200 Million of Shares of Common Stock with a Forward Component | Press release | PR Newswire | +1.08% | -0.20% | |
| Form 8-K MDU RESOURCES GROUP INC For: Nov 20 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | +0.10% | |
| MDU Resources Group Announces Increased Capital Investment Plan for 2026-2030 | Press release | PR Newswire | +0.05% | +0.10% | |
| MDU Resources Joins North Plains Connector Utility Consortium | Press release | Business Wire | +0.05% | +0.68% | |
| Form 10-Q MDU RESOURCES GROUP INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.07% | +0.72% | |
| Form 8-K MDU RESOURCES GROUP INC For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | -1.35% | +3.10% | |
| MDU Resources Announces Third Quarter 2025 Results; Narrows Guidance | Press release | PR Newswire | -1.35% | +3.10% | |
| MDU Resources to Webcast Third Quarter 2025 Earnings Conference Call | Press release | PR Newswire | +0.16% | +0.84% | |
| MDU's Investment in Wind Farm Deemed Prudent and Cost-Effective for Customers | Press release | PR Newswire | +0.18% | +0.00% | |
| MDU Resources Announces Increased Quarterly Dividend | Press release | PR Newswire | +0.18% | -1.26% | |
| Form 8-K MDU RESOURCES GROUP INC For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | -0.24% | -1.07% | |
| MDU Resources Announces Appointments to the Board of Directors | Press release | PR Newswire | -0.24% | -1.07% | |
| Form 10-Q MDU RESOURCES GROUP INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.29% | -3.77% | |
| Form 8-K MDU RESOURCES GROUP INC For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | +2.29% | -3.77% | |
| Form S-3ASR MDU RESOURCES GROUP INC | SEC filing · Form S-3ASR | SEC EDGAR | -0.62% | +1.73% | |
| MDU Resources Announces Second Quarter 2025 Results; Updates Guidance | Press release | PR Newswire | +2.29% | -3.77% | |
| MDU Resources to Webcast Second Quarter 2025 Earnings Conference Call | Press release | PR Newswire | +0.27% | +0.06% | |
| Form 11-K/A MDU RESOURCES GROUP INC For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.12% | +1.48% | |
| Form 11-K MDU RESOURCES GROUP INC For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | -0.12% | -0.56% | |
| Form SD MDU RESOURCES GROUP INC | SEC filing · Form SD | SEC EDGAR | +0.38% | -0.23% | |
| Form 8-K MDU RESOURCES GROUP INC For: May 13 | SEC filing · Form 8-K | SEC EDGAR | +0.73% | +1.16% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MDU section they belong to.
Where else MDU is measured.
MDU earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Kaiser Aluminum Corporation (KALU) | 241 | -0.15% | 43% |
| LSB Industries, Inc. (LXU) | 241 | -0.11% | 47% |
| Century Aluminum Company (CENX) | 240 | +0.33% | 56% |
| Clearwater Paper Corporation (CLW) | 239 | -0.04% | 47% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is MDU Resources Group, Inc. (Holding Company)'s median reaction calculated?
Every labeled MDU news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 241 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 57% of MDU's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MDU's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.