Hudson Bay Capital Management’s Zai Lab ZLAB Stock Holding History

Hudson Bay Capital Management’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	$4.08M	Buy	215,000 +185,000	+617%	+$3.65M	0.01%	618
2026 Q1	$564K	Sell	30,000 -60,000	-67%	-$1.11M	﹤0.01%	958
2025 Q4	$1.59M	Buy	+90,000	New	+$2.11M	0.01%	741
2022 Q2	–	Sell	-500,615	Closed	-$22M	–	1428
2022 Q1	$22M	Sell	500,615 -100	-0%	-$4.83K	0.3%	50
2021 Q4	$31.5M	Sell	500,715 -30,000	-6%	-$2.54M	0.32%	46
2021 Q3	$55.9M	Buy	530,715 +166,250	+46%	+$23.9M	0.76%	23
2021 Q2	$64.5M	Sell	364,465 -21,557	-6%	-$3.47M	0.78%	27
2021 Q1	$51.5M	Buy	386,022 +21,557	+6%	+$3.34M	0.63%	20
2020 Q4	$49.3M	Buy	364,465 +37,145	+11%	+$3.78M	0.53%	25
2020 Q3	$27.2M	Hold	327,320	–	–	0.4%	33
2020 Q2	$26.9M	Hold	327,320	–	–	0.47%	32
2020 Q1	$16.9M	Hold	327,320	–	–	0.42%	36
2019 Q4	$13.6M	Hold	327,320	–	–	0.3%	59
2019 Q3	$10.6M	Hold	327,320	–	–	0.29%	66
2019 Q2	$11.4M	Buy	327,320 +307,320	+1,537%	+$9.05M	0.26%	77
2019 Q1	$590K	Sell	20,000 -213,575	-91%	-$5.85M	0.01%	598
2018 Q4	$5.42M	Buy	233,575 +27,001	+13%	+$501K	0.07%	263
2018 Q3	$4.02M	Buy	206,574 +22,000	+12%	+$477K	0.05%	336
2018 Q2	$4.29M	Buy	184,574 +10,000	+6%	+$216K	0.06%	326
2018 Q1	$3.73M	Buy	174,574 +10,000	+6%	+$227K	0.08%	300
2017 Q4	$3.49M	Buy	164,574 +68,729	+72%	+$1.83M	0.08%	223
2017 Q3	$2.59M	Buy	+95,845	New	+$2.67M	0.06%	222

Other funds holding ZLAB

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 Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

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 New York $66.6B AUM 7.35% 1-Year Est. Return

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

Hudson Bay Capital Management's ZLAB Position: Q2 2026 in Review

Hudson Bay Capital Management increased its Zai Lab (ZLAB) stake by 617% in Q2 2026, buying an estimated $3.65M and bringing the position to 215,000 shares worth $4.08M. The position accounts for 0.01% of the portfolio, ranked #618.

Hudson Bay Capital Management first reported a position in ZLAB in Q3 2017 and has held it in 22 quarters since. The position peaked at $64.5M in Q2 2021. 93 funds tracked by Wall St. Rank hold ZLAB as of Q2 2026.

Hudson Bay Capital Management held 215,000 shares of Zai Lab worth $4.08M as of Q2 2026.
Hudson Bay Capital Management bought 185,000 Zai Lab shares in Q2 2026, an estimated $3.65M.
Zai Lab made up 0.01% of Hudson Bay Capital Management's portfolio in Q2 2026, its #618 holding.
Hudson Bay Capital Management first reported a position in Zai Lab in Q3 2017 and has held it in 22 quarters since.
Hudson Bay Capital Management's Zai Lab position peaked at $64.5M in Q2 2021.
93 funds tracked by Wall St. Rank held Zai Lab as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.