Jane Street
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Jane Street’s AnaptysBio ANAB Stock Holding History

Jane Street’s Portfolio ANAB Stock Details ANAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$544K Sell
9,800
-13,400
-58% -$721K ﹤0.01% 7851
2025
Q4 		$1.12M Buy
23,200
+16,400
+241% +$639K ﹤0.01% 5886
2025
Q3 		$208K Sell
6,800
-6,800
-50% -$156K ﹤0.01% 9603
2025
Q2 		$302K Buy
+13,600
New +$285K ﹤0.01% 7854
2025
Q1 		– Sell
-60,600
Closed -$802K – 9352
2024
Q4 		$802K Buy
60,600
+32,700
+117% +$792K ﹤0.01% 5798
2024
Q3 		$935K Buy
+27,900
New +$953K ﹤0.01% 6026
2022
Q1 		– Sell
-10,200
Closed -$354K – 10217
2021
Q4 		$354K Buy
+10,200
New +$323K ﹤0.01% 7870

Other funds holding ANAB

EC
EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AAA
Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
6CM
683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Jane Street's ANAB Position: Q1 2026 in Review

Jane Street increased its AnaptysBio (ANAB) stake by 1.9% in Q1 2026, buying an estimated $85.6K and bringing the position to 86,038 shares worth $4.77M. The position accounts for ﹤0.01% of the portfolio, ranked #3591.

Jane Street first reported a position in ANAB in Q4 2017 and has held it in 22 quarters since. The position peaked at $5.55M in Q3 2025. 207 funds tracked by Wall St. Rank hold ANAB as of Q1 2026.

  • Jane Street held 86,038 shares of AnaptysBio worth $4.77M as of Q1 2026.
  • Jane Street bought 1,591 AnaptysBio shares in Q1 2026, an estimated $85.6K.
  • AnaptysBio made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3591 holding.
  • Jane Street first reported a position in AnaptysBio in Q4 2017 and has held it in 22 quarters since.
  • Jane Street's AnaptysBio position peaked at $5.55M in Q3 2025.
  • 207 funds tracked by Wall St. Rank held AnaptysBio as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.