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
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

TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
SCM
Suvretta Capital Management New York $5.47B AUM 131.34% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return
VC
Vivo Capital Palo Alto, California $1.1B AUM 799.93% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PAI
Palo Alto Investors Palo Alto, California $724M AUM 96.91% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Jane Street's CMPX Position: Q2 2026 in Review

Jane Street opened a new position in Compass Therapeutics (CMPX) in Q2 2026: 59,955 shares worth $131K. The stake represents ﹤0.01% of the portfolio and ranks #10444 among its holdings. This is a return to the name: Jane Street previously reported a position in CMPX as recently as Q4 2025.

Jane Street first reported a position in CMPX in Q3 2022 and has held it in 13 quarters since. The position peaked at $1.25M in Q1 2023. 216 funds tracked by Wall St. Rank hold CMPX as of Q2 2026.

  • Jane Street held 59,955 shares of Compass Therapeutics worth $131K as of Q2 2026.
  • Compass Therapeutics was a new Jane Street position in Q2 2026.
  • Compass Therapeutics made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10444 holding.
  • Jane Street first reported a position in Compass Therapeutics in Q3 2022 and has held it in 13 quarters since.
  • Jane Street's Compass Therapeutics position peaked at $1.25M in Q1 2023.
  • 216 funds tracked by Wall St. Rank held Compass Therapeutics as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.