There is a long list of 373 institutional holders of MDU within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of MDU by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-MDU table below, the initial column indicates the name of each top institutional holder of MDU, with a link to that fund's top holdings. The next columns indicate the amount of MDU stock held by each of the institutional holders of MDU, followed by the MDU position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Vanguard Group Inc.	20,809,666	$412,031	12/31/2023
MDU	20,809,666	$412,031	12/31/2023
BlackRock Inc.	18,989,946	$376,001	12/31/2023
MDU	18,989,946	$376,001	12/31/2023
Corvex Management LP	10,147,041	$200,911	12/31/2023
MDU	10,147,041	$200,911	12/31/2023
Dimensional Fund Advisors LP	6,181,092	$122,386	12/31/2023
MDU	6,181,092	$122,386	12/31/2023
State Street Corp	5,978,329	$119,103	12/31/2023
MDU	5,978,329	$119,103	12/31/2023
FMR LLC	4,401,688	$87,153	12/31/2023
MDU	4,401,688	$87,153	12/31/2023
Franklin Resources Inc.	4,206,371	$83,286	12/31/2023
MDU	4,206,371	$83,286	12/31/2023
Barrow Hanley Mewhinney & Strauss LLC	3,538,312	$70,059	12/31/2023
MDU	3,538,312	$70,059	12/31/2023
Geode Capital Management LLC	3,366,507	$66,667	12/31/2023
MDU	3,366,507	$66,667	12/31/2023
River Road Asset Management LLC	2,931,590	$58,045	12/31/2023
MDU	2,931,590	$58,045	12/31/2023
Morgan Stanley	2,630,216	$52,078	12/31/2023
MDU	2,630,216	$52,078	12/31/2023
First Trust Advisors LP	2,561,113	$50,710	12/31/2023
MDU	2,561,113	$50,710	12/31/2023
Allspring Global Investments Holdings LLC	1,894,826	$47,750	03/31/2024
MDU	1,894,826	$47,750	03/31/2024
Frontier Capital Management Co. LLC	2,141,514	$42,402	12/31/2023
MDU	2,141,514	$42,402	12/31/2023
Bank of New York Mellon Corp	2,093,893	$41,459	12/31/2023
MDU	2,093,893	$41,459	12/31/2023
American Century Companies Inc.	2,066,153	$40,910	12/31/2023
MDU	2,066,153	$40,910	12/31/2023
Norges Bank	1,968,253	$38,971	12/31/2023
MDU	1,968,253	$38,971	12/31/2023
Charles Schwab Investment Management Inc.	1,918,944	$37,995	12/31/2023
MDU	1,918,944	$37,995	12/31/2023
J. Goldman & Co LP	1,841,824	$36,468	12/31/2023
MDU	1,841,824	$36,468	12/31/2023
US Bancorp DE	1,683,533	$33,334	12/31/2023
MDU	1,683,533	$33,334	12/31/2023
59 North Capital Management LP	1,584,388	$31,371	12/31/2023
MDU	1,584,388	$31,371	12/31/2023
Citadel Advisors LLC		$31,163	12/31/2023
MDU	1,562,473	$30,937	12/31/2023
Call	22,100	$438	12/31/2023
Put	10,700	$212	12/31/2023
AQR Capital Management LLC	1,444,399	$28,599	12/31/2023
MDU	1,444,399	$28,599	12/31/2023
Northern Trust Corp	1,436,306	$28,439	12/31/2023
MDU	1,436,306	$28,439	12/31/2023
Invesco Ltd.	1,407,458	$27,868	12/31/2023
MDU	1,407,458	$27,868	12/31/2023
Sasco Capital Inc. CT	1,359,771	$26,923	12/31/2023
MDU	1,359,771	$26,923	12/31/2023
Millennium Management LLC	1,354,880	$26,827	12/31/2023
MDU	1,354,880	$26,827	12/31/2023
Neuberger Berman Group LLC	1,182,050	$23,405	12/31/2023
MDU	1,182,050	$23,405	12/31/2023
Managed Asset Portfolios LLC	1,140,118	$22,574	12/31/2023
MDU	1,140,118	$22,574	12/31/2023
Mirae Asset Global Investments Co. Ltd.	1,068,517	$21,157	12/31/2023
MDU	1,068,517	$21,157	12/31/2023
Two Sigma Advisers LP	1,065,400	$21,095	12/31/2023
MDU	1,065,400	$21,095	12/31/2023
Two Sigma Investments LP	965,826	$19,123	12/31/2023
MDU	965,826	$19,123	12/31/2023
Adage Capital Partners GP L.L.C.	900,000	$17,820	12/31/2023
MDU	900,000	$17,820	12/31/2023
Ancora Advisors LLC	850,206	$16,834	12/31/2023
MDU	850,206	$16,834	12/31/2023
Pzena Investment Management LLC	795,335	$15,748	12/31/2023
MDU	795,335	$15,748	12/31/2023
Bank of America Corp DE	774,042	$15,326	12/31/2023
MDU	774,042	$15,326	12/31/2023
Principal Financial Group Inc.	747,566	$14,802	12/31/2023
MDU	747,566	$14,802	12/31/2023
JPMorgan Chase & Co.	662,078	$13,109	12/31/2023
MDU	662,078	$13,109	12/31/2023
Rhumbline Advisers	617,468	$12,226	12/31/2023
MDU	617,468	$12,226	12/31/2023
Man Group plc	603,952	$11,958	12/31/2023
MDU	603,952	$11,958	12/31/2023
Qube Research & Technologies Ltd	600,424	$11,888	12/31/2023
MDU	600,424	$11,888	12/31/2023
Nuveen Asset Management LLC	587,098	$11,630	12/31/2023
MDU	587,098	$11,630	12/31/2023
Loomis Sayles & Co. L P	549,314	$10,876	12/31/2023
MDU	549,314	$10,876	12/31/2023
AYAL Capital Advisors Ltd	534,049	$10,574	12/31/2023
MDU	534,049	$10,574	12/31/2023
Legal & General Group Plc	496,065	$9,822	12/31/2023
MDU	496,065	$9,822	12/31/2023
Macquarie Group Ltd.	430,490	$8,524	12/31/2023
MDU	430,490	$8,524	12/31/2023
John G Ullman & Associates Inc.	415,116	$8,219	12/31/2023
MDU	415,116	$8,219	12/31/2023
Squarepoint Ops LLC	394,778	$7,817	12/31/2023
MDU	394,778	$7,817	12/31/2023
Swiss National Bank	381,290	$7,550	12/31/2023
MDU	381,290	$7,550	12/31/2023
California Public Employees Retirement System	363,210	$7,192	12/31/2023
MDU	363,210	$7,192	12/31/2023