Hudson Bay Capital Management
ZLAB icon

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
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

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

Hudson Bay Capital Management's ZLAB Position: Q1 2026 in Review

Hudson Bay Capital Management reduced its Zai Lab (ZLAB) stake by 67% in Q1 2026, selling an estimated $1.11M and leaving 30,000 shares worth $564K. The position accounts for ﹤0.01% of the portfolio, ranked #958.

Hudson Bay Capital Management first reported a position in ZLAB in Q3 2017 and has held it in 21 quarters since. The position peaked at $64.5M in Q2 2021. 99 funds tracked by Wall St. Rank hold ZLAB as of Q1 2026.

  • Hudson Bay Capital Management held 30,000 shares of Zai Lab worth $564K as of Q1 2026.
  • Hudson Bay Capital Management sold 60,000 Zai Lab shares in Q1 2026, an estimated $1.11M.
  • Zai Lab made up ﹤0.01% of Hudson Bay Capital Management's portfolio in Q1 2026, its #958 holding.
  • Hudson Bay Capital Management first reported a position in Zai Lab in Q3 2017 and has held it in 21 quarters since.
  • Hudson Bay Capital Management's Zai Lab position peaked at $64.5M in Q2 2021.
  • 99 funds tracked by Wall St. Rank held Zai Lab as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.