JY
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Jeff Yass’s Zai Lab ZLAB Stock Holding History

Jeff Yass’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 		$2.09M Buy
109,800
+40,800
+59% +$806K ﹤0.01% 6392
2026
Q1 		$1.3M Sell
69,000
-22,300
-24% -$413K ﹤0.01% 7236
2025
Q4 		$1.61M Buy
91,300
+56,200
+160% +$1.32M ﹤0.01% 6089
2025
Q3 		$1.19M Buy
35,100
+18,100
+106% +$623K ﹤0.01% 6940
2025
Q2 		$594K Sell
17,000
-19,200
-53% -$631K ﹤0.01% 8781
2025
Q1 		$1.31M Sell
36,200
-5,900
-14% -$181K ﹤0.01% 6576
2024
Q4 		$1.1M Sell
42,100
-41,100
-49% -$1.14M ﹤0.01% 6712
2024
Q3 		$2.01M Sell
83,200
-71,900
-46% -$1.36M ﹤0.01% 5252
2024
Q2 		$2.69M Buy
155,100
+71,600
+86% +$1.26M ﹤0.01% 4513
2024
Q1 		$1.34M Buy
83,500
+38,500
+86% +$811K ﹤0.01% 6239
2023
Q4 		$1.23M Buy
45,000
+30,900
+219% +$816K ﹤0.01% 6478
2023
Q3 		$343K Sell
14,100
-53,400
-79% -$1.42M ﹤0.01% 9067
2023
Q2 		$1.87M Sell
67,500
-7,800
-10% -$255K ﹤0.01% 5288
2023
Q1 		$2.5M Sell
75,300
-56,900
-43% -$2.18M ﹤0.01% 4684
2022
Q4 		$4.06M Buy
132,200
+101,100
+325% +$3.19M ﹤0.01% 3557
2022
Q3 		$1.06M Buy
31,100
+7,600
+32% +$325K ﹤0.01% 6485
2022
Q2 		$815K Sell
23,500
-6,200
-21% -$219K ﹤0.01% 7031
2022
Q1 		$1.31M Buy
29,700
+7,500
+34% +$363K ﹤0.01% 6474
2021
Q4 		$1.4M Sell
22,200
-61,400
-73% -$5.21M ﹤0.01% 6399
2021
Q3 		$8.81M Buy
83,600
+42,300
+102% +$6.07M ﹤0.01% 3055
2021
Q2 		$7.31M Buy
41,300
+7,400
+22% +$1.19M ﹤0.01% 3370
2021
Q1 		$4.52M Buy
33,900
+19,000
+128% +$2.94M ﹤0.01% 4102
2020
Q4 		$2.02M Sell
14,900
-18,100
-55% -$1.84M ﹤0.01% 5076
2020
Q3 		$2.75M Buy
33,000
+13,100
+66% +$1.05M ﹤0.01% 4027
2020
Q2 		$1.63M Buy
19,900
+15,300
+333% +$1.04M ﹤0.01% 4857
2020
Q1 		$237K Sell
4,600
-2,000
-30% -$104K ﹤0.01% 8400
2019
Q4 		$274K Sell
6,600
-700
-10% -$25.8K ﹤0.01% 8194
2019
Q3 		$236K Buy
7,300
+400
+6% +$13.7K ﹤0.01% 8782
2019
Q2 		$241K Sell
6,900
-2,200
-24% -$64.8K ﹤0.01% 8757
2019
Q1 		$269K Sell
9,100
-1,400
-13% -$38.3K ﹤0.01% 7400
2018
Q4 		$244K Buy
+10,500
New +$195K ﹤0.01% 7387
2018
Q3 		– Sell
-14,000
Closed -$326K – 10387
2018
Q2 		$326K Buy
+14,000
New +$302K ﹤0.01% 7675

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
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Jeff Yass's ZLAB Position: Q2 2026 in Review

Jeff Yass increased its Zai Lab (ZLAB) stake by 17% in Q2 2026, buying an estimated $224K and bringing the position to 76,565 shares worth $1.45M. The position accounts for ﹤0.01% of the portfolio, ranked #7239.

Jeff Yass first reported a position in ZLAB in Q1 2020 and has held it in 22 quarters since. The position peaked at $5.62M in Q3 2021. 93 funds tracked by Wall St. Rank hold ZLAB as of Q2 2026.

  • Jeff Yass held 76,565 shares of Zai Lab worth $1.45M as of Q2 2026.
  • Jeff Yass bought 11,317 Zai Lab shares in Q2 2026, an estimated $224K.
  • Zai Lab made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #7239 holding.
  • Jeff Yass first reported a position in Zai Lab in Q1 2020 and has held it in 22 quarters since.
  • Jeff Yass's Zai Lab position peaked at $5.62M in Q3 2021.
  • 93 funds tracked by Wall St. Rank held Zai Lab as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.