Jane Street
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Jane Street’s Compass Therapeutics CMPX Stock Holding History

Jane Street’s Portfolio CMPX Stock Details CMPX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$26.6K Sell
25,600
-144,400
-85% -$298K ﹤0.01% 11200
2026
Q2 		$372K Buy
+170,000
New +$502K ﹤0.01% 8700
2025
Q4 		– Sell
-12,800
Closed -$44.8K – 11253
2025
Q3 		$44.8K Sell
12,800
-5,400
-30% -$17.1K ﹤0.01% 10380
2025
Q2 		$47.3K Sell
18,200
-24,400
-57% -$50.3K ﹤0.01% 9188
2025
Q1 		$80.9K Buy
+42,600
New +$113K ﹤0.01% 8889

Other funds holding CMPX

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $123B AUM 30.05% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Vivo Capital
Vivo Capital Palo Alto, California $909M AUM 385.65% 1-Year Est. Return
Blue Owl Capital Holdings
Blue Owl Capital Holdings New York $548M AUM 35.34% 1-Year Est. Return
HRT Financial
HRT Financial New York $57.2B AUM 52.85% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $85.7B AUM 51.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM

Jane Street's CMPX Position: Q3 2026 in Review

Jane Street sold out of Compass Therapeutics (CMPX) in Q3 2026, closing a stake of 59,955 shares — an estimated $124K sold.

Jane Street first reported a position in CMPX in Q3 2022 and held it in 13 quarters. The position peaked at $1.25M in Q1 2023. 116 funds tracked by Wall St. Rank hold CMPX as of Q3 2026.

  • Jane Street reported no remaining Compass Therapeutics position as of Q3 2026 after selling out during the quarter.
  • Jane Street sold 59,955 Compass Therapeutics shares in Q3 2026, an estimated $124K.
  • Jane Street first reported a position in Compass Therapeutics in Q3 2022 and held it in 13 quarters.
  • Jane Street's Compass Therapeutics position peaked at $1.25M in Q1 2023.
  • 116 funds tracked by Wall St. Rank held Compass Therapeutics as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.