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	–	Sell	-105,200	Closed	-$5.1M	–	11485
2025 Q4	$5.1M	Buy	105,200 +72,600	+223%	+$2.83M	﹤0.01%	3195
2025 Q3	$998K	Buy	32,600 +21,700	+199%	+$498K	﹤0.01%	6314
2025 Q2	$242K	Buy	+10,900	New	+$228K	﹤0.01%	8218
2025 Q1	–	Sell	-88,800	Closed	-$1.18M	–	9354
2024 Q4	$1.18M	Buy	88,800 +38,800	+78%	+$940K	﹤0.01%	5067
2024 Q3	$1.68M	Buy	+50,000	New	+$1.71M	﹤0.01%	4848

Other funds holding ANAB

EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

TCM

Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

AAA

Affinity Asset Advisors New York $2.21B AUM 431.26% 1-Year Est. Return

Sanofi Paris, France $534M AUM 205.96% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

6CM

683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return

Jane Street's ANAB Position: Q2 2026 in Review

Jane Street sold out of AnaptysBio (ANAB) in Q2 2026, closing a stake of 86,038 shares — an estimated $5.22M sold.

Jane Street first reported a position in ANAB in Q4 2017 and held it in 22 quarters. The position peaked at $5.55M in Q3 2025. 213 funds tracked by Wall St. Rank hold ANAB as of Q2 2026.

Jane Street reported no remaining AnaptysBio position as of Q2 2026 after selling out during the quarter.
Jane Street sold 86,038 AnaptysBio shares in Q2 2026, an estimated $5.22M.
Jane Street first reported a position in AnaptysBio in Q4 2017 and held it in 22 quarters.
Jane Street's AnaptysBio position peaked at $5.55M in Q3 2025.
213 funds tracked by Wall St. Rank held AnaptysBio as of Q2 2026.

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