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John Overdeck’s Zai Lab ZLAB Stock Holding History

John Overdeck’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
Q2 		$24.7M Buy
1,299,394
+989,671
+320% +$19.6M 0.02% 919
2026
Q1 		$5.83M Buy
309,723
+280,200
+949% +$5.19M ﹤0.01% 1839
2025
Q4 		$521K Buy
+29,523
New +$691K ﹤0.01% 3282
2025
Q2 		– Sell
-55,843
Closed -$2.02M – 3604
2025
Q1 		$2.02M Buy
55,843
+26,086
+88% +$802K ﹤0.01% 1735
2024
Q4 		$779K Sell
29,757
-38,255
-56% -$1.06M ﹤0.01% 2325
2024
Q3 		$1.64M Buy
68,012
+2,124
+3% +$40.1K ﹤0.01% 1796
2024
Q2 		$1.14M Buy
+65,888
New +$1.16M ﹤0.01% 1912
2023
Q2 		– Sell
-17,100
Closed -$569K – 3307
2023
Q1 		$569K Buy
+17,100
New +$656K ﹤0.01% 2143
2022
Q2 		– Sell
-41,816
Closed -$1.84M – 3000
2022
Q1 		$1.84M Sell
41,816
-367,206
-90% -$17.8M 0.01% 1388
2021
Q4 		$25.7M Buy
409,022
+216,132
+112% +$18.3M 0.05% 395
2021
Q3 		$20.3M Buy
192,890
+187,074
+3,217% +$26.9M 0.05% 465
2021
Q2 		$1.03M Sell
5,816
-115,080
-95% -$18.5M ﹤0.01% 2455
2021
Q1 		$16.1M Buy
120,896
+116,780
+2,837% +$18.1M 0.04% 514
2020
Q4 		$557K Sell
4,116
-6,900
-63% -$702K ﹤0.01% 2438
2020
Q3 		$916K Sell
11,016
-3,600
-25% -$289K ﹤0.01% 1826
2020
Q2 		$1.2M Buy
14,616
+9,286
+174% +$628K 0.01% 1417
2020
Q1 		$274K Sell
5,330
-12,786
-71% -$666K ﹤0.01% 2396
2019
Q4 		$753K Buy
+18,116
New +$669K ﹤0.01% 2456

Other funds holding ZLAB

RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

John Overdeck's ZLAB Position: Q2 2026 in Review

John Overdeck increased its Zai Lab (ZLAB) stake by 320% in Q2 2026, buying an estimated $19.6M and bringing the position to 1,299,394 shares worth $24.7M. The position accounts for 0.02% of the portfolio, ranked #919.

John Overdeck first reported a position in ZLAB in Q4 2019 and has held it in 18 quarters since. The position peaked at $25.7M in Q4 2021. 93 funds tracked by Wall St. Rank hold ZLAB as of Q2 2026.

  • John Overdeck held 1,299,394 shares of Zai Lab worth $24.7M as of Q2 2026.
  • John Overdeck bought 989,671 Zai Lab shares in Q2 2026, an estimated $19.6M.
  • Zai Lab made up 0.02% of John Overdeck's portfolio in Q2 2026, its #919 holding.
  • John Overdeck first reported a position in Zai Lab in Q4 2019 and has held it in 18 quarters since.
  • John Overdeck's Zai Lab position peaked at $25.7M in Q4 2021.
  • 93 funds tracked by Wall St. Rank held Zai Lab as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.