Jane Street
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Jane Street’s Zai Lab ZLAB Stock Holding History

Jane Street’s Portfolio ZLAB Stock Details ZLAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.74M Buy
199,000
+3,500
+2% +$64.9K ﹤0.01% 3968
2025
Q4 		$3.45M Buy
195,500
+107,900
+123% +$2.53M ﹤0.01% 3817
2025
Q3 		$2.97M Sell
87,600
-1,800
-2% -$62K ﹤0.01% 4236
2025
Q2 		$3.13M Sell
89,400
-84,900
-49% -$2.79M ﹤0.01% 3691
2025
Q1 		$6.3M Sell
174,300
-55,700
-24% -$1.71M ﹤0.01% 2587
2024
Q4 		$6.02M Sell
230,000
-11,400
-5% -$316K ﹤0.01% 2439
2024
Q3 		$5.83M Sell
241,400
-264,500
-52% -$5M ﹤0.01% 2621
2024
Q2 		$8.77M Buy
505,900
+291,000
+135% +$5.12M ﹤0.01% 2197
2024
Q1 		$3.44M Buy
214,900
+124,800
+139% +$2.63M ﹤0.01% 3190
2023
Q4 		$2.46M Buy
90,100
+74,700
+485% +$1.97M ﹤0.01% 3961
2023
Q3 		$374K Sell
15,400
-300
-2% -$7.99K ﹤0.01% 6707
2023
Q2 		$435K Buy
+15,700
New +$514K ﹤0.01% 6532
2023
Q1 		– Sell
-14,900
Closed -$457K – 10080
2022
Q4 		$457K Buy
+14,900
New +$470K ﹤0.01% 6289
2022
Q3 		– Sell
-6,100
Closed -$212K – 10617
2022
Q2 		$212K Sell
6,100
-14,900
-71% -$525K ﹤0.01% 8115
2022
Q1 		$924K Buy
21,000
+9,900
+89% +$479K ﹤0.01% 6300
2021
Q4 		$698K Sell
11,100
-33,000
-75% -$2.8M ﹤0.01% 6637
2021
Q3 		$4.65M Buy
44,100
+25,600
+138% +$3.68M ﹤0.01% 2858
2021
Q2 		$3.27M Buy
18,500
+2,400
+15% +$386K ﹤0.01% 3419
2021
Q1 		$2.15M Buy
+16,100
New +$2.49M ﹤0.01% 3877

Other funds holding ZLAB

RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RSCM
Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return
CWG
C WorldWide Group Copenhagen, Denmark $4.66B AUM 11.67% 1-Year Est. Return

Jane Street's ZLAB Position: Q1 2026 in Review

Jane Street reduced its Zai Lab (ZLAB) stake by 30% in Q1 2026, selling an estimated $2.12M and leaving 267,926 shares worth $5.04M. The position accounts for ﹤0.01% of the portfolio, ranked #3509.

Jane Street first reported a position in ZLAB in Q3 2018 and has held it in 21 quarters since. The position peaked at $6.74M in Q4 2025. 99 funds tracked by Wall St. Rank hold ZLAB as of Q1 2026.

  • Jane Street held 267,926 shares of Zai Lab worth $5.04M as of Q1 2026.
  • Jane Street sold 114,136 Zai Lab shares in Q1 2026, an estimated $2.12M.
  • Zai Lab made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3509 holding.
  • Jane Street first reported a position in Zai Lab in Q3 2018 and has held it in 21 quarters since.
  • Jane Street's Zai Lab position peaked at $6.74M in Q4 2025.
  • 99 funds tracked by Wall St. Rank held Zai Lab as of Q1 2026.

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