Millennium Management
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Millennium Management’s Magnolia Oil & Gas MGY Stock Holding History

Millennium Management’s Portfolio MGY Stock Details MGY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2021
Q4 		– Sell
-20,000
Closed -$356K – 7154
2021
Q3 		$356K Buy
+20,000
New +$302K ﹤0.01% 5679

Other funds holding MGY

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Vanguard Portfolio Management
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American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

Millennium Management's MGY Position: Q2 2026 in Review

Millennium Management reduced its Magnolia Oil & Gas (MGY) stake by 56% in Q2 2026, selling an estimated $9.64M and leaving 261,428 shares worth $6.69M. The position accounts for ﹤0.01% of the portfolio, ranked #2712.

Millennium Management first reported a position in MGY in Q2 2018 and has held it in 29 quarters since. The position peaked at $86.9M in Q3 2018. 410 funds tracked by Wall St. Rank hold MGY as of Q2 2026.

  • Millennium Management held 261,428 shares of Magnolia Oil & Gas worth $6.69M as of Q2 2026.
  • Millennium Management sold 337,589 Magnolia Oil & Gas shares in Q2 2026, an estimated $9.64M.
  • Magnolia Oil & Gas made up ﹤0.01% of Millennium Management's portfolio in Q2 2026, its #2712 holding.
  • Millennium Management first reported a position in Magnolia Oil & Gas in Q2 2018 and has held it in 29 quarters since.
  • Millennium Management's Magnolia Oil & Gas position peaked at $86.9M in Q3 2018.
  • 410 funds tracked by Wall St. Rank held Magnolia Oil & Gas as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.