MDU MDU Resources Group, Inc.

NYSE
$18.56

MDU Resources Group, Inc. (MDU) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+21.43
17 buyers / 11 sellers
BUYING
Funds compared
29
funds with comparable MDU positions
24 current holders · 24 prior-quarter holders
Net share change
+1.17M
+2.57M added, -1.40M cut
Position activity
5 new 12 increased 6 reduced 5 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Yaupon Capital Management Sold Out -548.0K -100.0% $11.6M 0.0% 62
ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out -500.0K -100.0% $10.6M 0.0% 60
Ilex Capital Partners Long/Short New +160.6K — $3.4M 0.1% 57
Magnetar Capital Event Quant New +58.9K — $1.2M 0.0% 56
MARSHALL WACE, LLP Long/Short Sold Out -28.0K -100.0% $593.9K 0.0% 56
Boothbay Fund Management New +53.9K — $1.1M 0.0% 51
Aquatic Capital Management Quant Sold Out -66.2K -100.0% $1.4M 0.0% 50
MILLENNIUM MANAGEMENT LLC Increased +290.8K +87.1% $6.2M 0.0% 50
CITADEL ADVISORS LLC Quant Increased +814.9K +74.4% $17.3M 0.0% 49
Graham Capital Management Quant Macro New +31.9K — $675.7K 0.0% 49

Most significant buyers

By move score, not size.

  • Ilex Capital Partners New · +160.6K
  • Magnetar Capital New · +58.9K
  • Boothbay Fund Management New · +53.9K
  • MILLENNIUM MANAGEMENT LLC Increased · +290.8K
  • CITADEL ADVISORS LLC Increased · +814.9K

Most significant sellers

By move score, not size.

  • Yaupon Capital Management Sold Out · -548.0K
  • ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out · -500.0K
  • MARSHALL WACE, LLP Sold Out · -28.0K
  • Aquatic Capital Management Sold Out · -66.2K
  • Quantbot Technologies Sold Out · -33.8K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Yaupon Capital Management 2 0 548.0K -548.0K -100.0% 0.0% Sold Out 62
ADAGE CAPITAL PARTNERS GP, L.L.C. 2 0 500.0K -500.0K -100.0% 0.0% Sold Out 60
Ilex Capital Partners 2 160.6K 0 +160.6K — 0.1% New 57
Magnetar Capital 2 58.9K 0 +58.9K — 0.0% New 56
MARSHALL WACE, LLP 2 0 28.0K -28.0K -100.0% 0.0% Sold Out 56
Boothbay Fund Management 4 53.9K 0 +53.9K — 0.0% New 51
Aquatic Capital Management 4 0 66.2K -66.2K -100.0% 0.0% Sold Out 50
MILLENNIUM MANAGEMENT LLC 2 624.8K 334.0K +290.8K +87.1% 0.0% Increased 50
CITADEL ADVISORS LLC 1 1.9M 1.1M +814.9K +74.4% 0.0% Increased 49
Graham Capital Management 3 31.9K 0 +31.9K — 0.0% New 49
TWO SIGMA INVESTMENTS, LP 2 898.5K 482.6K +415.9K +86.2% 0.0% Increased 49
ExodusPoint Capital Management 3 99.6K 11.0K +88.6K +807.3% 0.0% Increased 48
Y-Intercept 4 24.6K 0 +24.6K — 0.0% New 48
Lighthouse Investment Partners 3 180.7K 18.5K +162.2K +875.0% 0.1% Increased 47
Quantbot Technologies 4 0 33.8K -33.8K -100.0% 0.0% Sold Out 45
Bridgewater Associates 1 80.7K 52.6K +28.0K +53.3% 0.0% Increased 43
Capital Fund Management 3 227.0K 142.8K +84.2K +59.0% 0.0% Increased 39
Gotham Asset Management, LLC 2 726.7K 503.9K +222.8K +44.2% 0.0% Increased 37
Balyasny Asset Management L.P. 2 224.0K 285.0K -61.0K -21.4% 0.0% Reduced 34
AQR Capital Management 3 235.2K 161.9K +73.3K +45.3% 0.0% Increased 33
Trexquant Investment 3 62.2K 99.4K -37.2K -37.4% 0.0% Reduced 29
Man Group 3 297.9K 378.4K -80.5K -21.3% 0.0% Reduced 28
RENAISSANCE TECHNOLOGIES LLC 1 957.2K 929.8K +27.3K +2.9% 0.0% Increased 28
D. E. Shaw & Co., Inc. 1 450.8K 470.6K -19.8K -4.2% 0.0% Reduced 28
Winton Group 4 29.4K 50.3K -20.8K -41.4% 0.0% Reduced 28
Squarepoint Ops LLC 2 197.6K 170.1K +27.5K +16.2% 0.0% Increased 28
Brevan Howard Capital Management 3 133.2K 132.8K +446 +0.3% 0.1% Increased 19
Centiva Capital 4 23.2K 24.2K -1.0K -4.2% 0.0% Reduced 18
Verition Fund Management 2 300.0K 300.0K 0 +0.0% 0.1% Unchanged 18

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.