Jane Street
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Jane Street’s Quantum Computing Inc QUBT Stock Holding History

Jane Street’s Portfolio QUBT Stock Details QUBT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.55M Sell
518,400
-330,700
-39% -$3.02M ﹤0.01% 4051
2025
Q4 		$8.71M Sell
849,100
-4,809,000
-85% -$68.4M ﹤0.01% 2493
2025
Q3 		$104M Buy
5,658,100
+4,238,900
+299% +$72.7M 0.02% 583
2025
Q2 		$27.2M Buy
1,419,200
+893,000
+170% +$9.84M 0.01% 1173
2025
Q1 		$4.21M Sell
526,200
-75,200
-13% -$661K ﹤0.01% 3185
2024
Q4 		$9.95M Buy
+601,400
New +$3.3M ﹤0.01% 1890

Other funds holding QUBT

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
DE
Defiance ETFs New York $6.98B AUM
MG
Marex Group London $15.8B AUM 31.44% 1-Year Est. Return
PCM
Penserra Capital Management Orinda, California $8.52B AUM 37.76% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return

Jane Street's QUBT Position: Q3 2025 in Review

Jane Street sold out of Quantum Computing Inc (QUBT) in Q3 2025, closing a stake of 4,978,363 shares — an estimated $85.4M sold.

Jane Street first reported a position in QUBT in Q4 2021 and held it in 9 quarters. The position peaked at $89.7M in Q2 2025. 259 funds tracked by Wall St. Rank hold QUBT as of Q3 2025.

  • Jane Street reported no remaining Quantum Computing Inc position as of Q3 2025 after selling out during the quarter.
  • Jane Street sold 4,978,363 Quantum Computing Inc shares in Q3 2025, an estimated $85.4M.
  • Jane Street first reported a position in Quantum Computing Inc in Q4 2021 and held it in 9 quarters.
  • Jane Street's Quantum Computing Inc position peaked at $89.7M in Q2 2025.
  • 259 funds tracked by Wall St. Rank held Quantum Computing Inc as of Q3 2025.

Based on Jane Street's 13F filing for Q3 2025, filed 14 Nov 2025.