MDU Resources Group, Inc. (MDU) Ownership
MDU ownership summary
as of October 18, 2026- Institutions
- 94.4% of shares outstanding
- Insiders
- 0.45% of shares outstanding
- Shares outstanding
- 210.3M
- Float
- 209.2M shares available to trade
- Short interest
- 11.68% 18.8M shares short
- Days to cover
- 8.99 short interest up 17.5% vs prior month
- Institutions 94.39%
- Insiders 0.45%
- Other investors 5.16%
MDU top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 13.00% | 27.4M | $519.7M | +1.6M (+6.4%) | June 30, 2026 |
| 2 | Barrow Hanley Mewhinney & Strauss LLC | 6.21% | 13.1M | $248.1M | −703,443 (−5.1%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 6.03% | 12.7M | $241.2M | +165,359 (+1.3%) | June 30, 2026 |
| 4 | Dimensional Fund Advisors, Inc. | 4.96% | 10.4M | $198.3M | +149,313 (+1.5%) | June 30, 2026 |
| 5 | Earnest Partners LLC | 4.62% | 9.7M | $184.8M | −155,024 (−1.6%) | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 4.48% | 9.4M | $178.9M | +268,676 (+2.9%) | June 30, 2026 |
| 7 | State Street Corp | 3.51% | 7.4M | $140.1M | +385,887 (+5.5%) | June 30, 2026 |
| 8 | Bank of America Corp | 2.90% | 6.1M | $115.7M | −112,914 (−1.8%) | June 30, 2026 |
| 9 | SEI Investments Co | 2.49% | 5.2M | $99.3M | −32,668 (−0.6%) | June 30, 2026 |
| 10 | Morgan Stanley - Brokerage Accounts | 1.94% | 4.1M | $77.6M | −134,722 (−3.2%) | June 30, 2026 |
| 11 | Geode Capital Management, LLC | 1.69% | 3.6M | $67.5M | +61,998 (+1.8%) | June 30, 2026 |
| 12 | River Road Asset Management, LLC | 1.62% | 3.4M | $64.7M | −673,296 (−16.5%) | June 30, 2026 |
| 13 | Westwood Holdings Group Inc | 1.53% | 3.2M | $61.2M | −320,137 (−9.0%) | June 30, 2026 |
| 14 | HITE Hedge Asset Management MLP | 1.49% | 3.1M | $59.6M | +1.6M (+102.4%) | June 30, 2026 |
| 15 | NORGES BANK | 1.25% | 2.6M | $50.0M | −420,904 (−13.8%) | June 30, 2026 |
| 16 | T. Rowe Price Investment Management,Inc. | 1.23% | 2.6M | $49.3M | +434,249 (+20.1%) | June 30, 2026 |
| 17 | Bank of New York Mellon Corp | 1.11% | 2.3M | $44.3M | −33,116 (−1.4%) | June 30, 2026 |
| 18 | Charles Schwab Investment Management Inc | 1.06% | 2.2M | $42.5M | −28,206 (−1.2%) | June 30, 2026 |
| 19 | Amvescap Plc. | 0.97% | 2.0M | $38.9M | +166,616 (+8.9%) | June 30, 2026 |
| 20 | Frontier Capital Management CO Inc | 0.94% | 2.0M | $37.8M | −518,883 (−20.7%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 9 holders added 4.9M shares and 11 cut 3.1M.
MDU top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.96% | 12.5M | $238.0M | +2,787 (+0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.17% | 6.7M | $126.5M | −9,645 (−0.1%) | August 31, 2026 |
| 3 | Bridge Builder Large Cap Value | 2.43% | 5.1M | $97.3M | — | September 30, 2026 |
| 4 | Vanguard Small Cap Index | 2.25% | 4.7M | $89.9M | −83,639 (−1.7%) | September 30, 2026 |
| 5 | Vanguard MStar Small Cap Value Index | 1.46% | 3.1M | $58.5M | +27,247 (+0.9%) | September 30, 2026 |
| 6 | DFA US Small Cap Value I | 1.16% | 2.4M | $46.4M | — | August 31, 2026 |
| 7 | Global X US Infrastructure Dev ETF | 0.99% | 2.1M | $39.5M | +14,580 (+0.7%) | September 30, 2026 |
| 8 | State Street SPDR Port S&P 600 Sm CpETF | 0.91% | 1.9M | $36.4M | — | September 30, 2026 |
| 9 | iShares S&P Small-Cap 600 Value ETF | 0.85% | 1.8M | $33.8M | — | September 30, 2026 |
| 10 | Bridge Builder Tax Managed Large Cap | 0.70% | 1.5M | $27.8M | — | September 30, 2026 |
| 11 | FPA Queens Road Small Cap Value Inv | 0.68% | 1.4M | $27.2M | +72,500 (+5.3%) | September 30, 2026 |
| 12 | Vanguard Utilities ETF | 0.65% | 1.4M | $25.9M | −3,542 (−0.3%) | September 30, 2026 |
| 13 | Vanguard Tax-Managed Small Cap Adm | 0.61% | 1.3M | $24.6M | — | September 30, 2026 |
| 14 | T. Rowe Price Small-Cap Value | 0.61% | 1.3M | $24.4M | — | September 30, 2026 |
| 15 | First Trust Utilities AlphaDEX® ETF | 0.60% | 1.3M | $24.2M | −3,865 (−0.3%) | September 30, 2026 |
| 16 | DFA US Targeted Value I | 0.55% | 1.2M | $22.0M | — | August 31, 2026 |
| 17 | Schwab US Small-Cap ETF™ | 0.53% | 1.1M | $21.0M | +747 (+0.1%) | September 30, 2026 |
| 18 | State Street® SPDR® S&P 600™ Sm CpValETF | 0.53% | 1.1M | $21.0M | — | September 30, 2026 |
| 19 | Dimensional US Small Cap Value ETF | 0.53% | 1.1M | $21.0M | +420 (+0.0%) | September 24, 2026 |
| 20 | American Beacon Small Cp Val R5 | 0.51% | 1.1M | $20.2M | −7,400 (−0.7%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
MDU insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-13 | Charles M Kelley | Buy | $20.84 | 5,000 | $104,200 |
| 2025-09-08 | Jason L Vollmer | Buy | $16.07 | 5,000 | $80,350 |
| 2025-08-19 | Jason L Vollmer | Buy | $16.27 | 5,000 | $81,350 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
MDU shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MDU
Institutional investors own 94.4% of MDU Resources's shares and insiders 0.45%. The largest holder is BlackRock Inc with 13.00% of the shares (27.4M), as of June 30, 2026. Among the top 20 institutions, 9 added shares and 11 reduced their stake in the latest filings. Short interest is 11.68% of the float, or 8.99 days of average trading volume. The share count rose 5.9% since 2014.
Related: MDU analyst forecast, MDU key metrics, MDU dividend history. See the MDU stock overview for the latest quote and news.
MDU ownership FAQ
Who owns the most MDU Resources stock?
The largest shareholders of MDU Resources are BlackRock Inc (13.00%), Barrow Hanley Mewhinney & Strauss LLC (6.21%), Vanguard Portfolio Management, LLC (6.03%), Dimensional Fund Advisors, Inc. (4.96%), Earnest Partners LLC (4.62%).
What percentage of MDU Resources is owned by institutions?
Institutions hold 94.4% of MDU Resources's shares outstanding; insiders hold 0.45%.
Which funds own MDU Resources?
The largest fund holders of MDU Resources are iShares Core S&P Small-Cap ETF (5.96%), Vanguard MStar Total Stk Mkt Idx Invest (3.17%), Bridge Builder Large Cap Value (2.43%), Vanguard Small Cap Index (2.25%), Vanguard MStar Small Cap Value Index (1.46%).
What is MDU Resources's short interest?
18.8M shares of MDU Resources were sold short, 11.68% of the float; at the average daily volume it would take 8.99 days to cover.
Are insiders buying or selling MDU Resources?
Of the latest 3 reported insider transactions in MDU Resources (since August 19, 2025), 3 were purchases and 0 were sales.
How many shares of MDU Resources are outstanding?
MDU Resources has 210.3M shares outstanding, of which 209.2M are in the public float.