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Marathon Trading Investment Management’s Opendoor OPEN Stock Holding History

Marathon Trading Investment Management’s Portfolio OPEN Stock Details OPEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.58M Sell
341,100
-100
-0% -$479 0.05% 93
2026
Q1 		$1.6M Sell
341,200
-32,600
-9% -$176K 0.04% 72
2025
Q4 		$2.18M Buy
373,800
+300,640
+411% +$2.15M 0.05% 91
2025
Q3 		$564K Buy
73,160
+51,460
+237% +$209K 0.04% 146
2025
Q2 		$11.2K Hold
21,700
– – ﹤0.01% 254
2025
Q1 		$21.4K Hold
21,700
– – ﹤0.01% 323
2024
Q4 		$33.6K Buy
+21,700
New +$39.3K ﹤0.01% 276
2021
Q4 		– Sell
-10,719
Closed -$213K – 376
2021
Q3 		$213K Sell
10,719
-22,216
-67% -$359K 0.02% 306
2021
Q2 		$565K Buy
+32,935
New +$566K 0.06% 165

Other funds holding OPEN

Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
LC
Lennar Corp Miami, Florida $63.2M AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

Marathon Trading Investment Management's OPEN Position: Q2 2026 in Review

Marathon Trading Investment Management reduced its Opendoor (OPEN) stake by 0.03% in Q2 2026, selling an estimated $479 and leaving 341,100 shares worth $1.58M. The position accounts for 0.05% of the portfolio, ranked #93.

Marathon Trading Investment Management first reported a position in OPEN in Q2 2021 and has held it in 9 quarters since. The position peaked at $2.18M in Q4 2025. 390 funds tracked by Wall St. Rank hold OPEN as of Q2 2026.

  • Marathon Trading Investment Management held 341,100 shares of Opendoor worth $1.58M as of Q2 2026.
  • Marathon Trading Investment Management sold 100 Opendoor shares in Q2 2026, an estimated $479.
  • Opendoor made up 0.05% of Marathon Trading Investment Management's portfolio in Q2 2026, its #93 holding.
  • Marathon Trading Investment Management first reported a position in Opendoor in Q2 2021 and has held it in 9 quarters since.
  • Marathon Trading Investment Management's Opendoor position peaked at $2.18M in Q4 2025.
  • 390 funds tracked by Wall St. Rank held Opendoor as of Q2 2026.

Based on Marathon Trading Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.