Simplex Trading
ZLAB icon

Simplex Trading’s Zai Lab ZLAB Stock Holding History

Simplex Trading’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 		$15K Sell
800
-6,300
-89% -$117K ﹤0.01% 6994
2025
Q4 		$125K Sell
7,100
-26,400
-79% -$618K ﹤0.01% 4746
2025
Q3 		$1.14M Buy
33,500
+14,300
+74% +$492K ﹤0.01% 2931
2025
Q2 		$671K Sell
19,200
-300
-2% -$9.86K ﹤0.01% 3199
2025
Q1 		$704K Buy
19,500
+18,000
+1,200% +$554K ﹤0.01% 3034
2024
Q4 		$39K Sell
1,500
-100
-6% -$2.78K ﹤0.01% 6138
2024
Q3 		$38K Buy
1,600
+1,500
+1,500% +$28.3K ﹤0.01% 6149
2024
Q2 		$1K Sell
100
-400
-80% -$7.03K ﹤0.01% 8595
2024
Q1 		$8K Sell
500
-500
-50% -$10.5K ﹤0.01% 7789
2023
Q4 		$27K Buy
+1,000
New +$26.4K ﹤0.01% 6686
2023
Q3 		– Sell
-600
Closed -$16K – 10027
2023
Q2 		$16K Sell
600
-5,900
-91% -$193K ﹤0.01% 7006
2023
Q1 		$216K Sell
6,500
-600
-8% -$23K ﹤0.01% 4235
2022
Q4 		$217K Sell
7,100
-4,200
-37% -$132K ﹤0.01% 4131
2022
Q3 		$386K Buy
11,300
+6,600
+140% +$282K ﹤0.01% 3779
2022
Q2 		$162K Sell
4,700
-4,400
-48% -$155K ﹤0.01% 4899
2022
Q1 		$400K Buy
9,100
+2,700
+42% +$131K ﹤0.01% 4141
2021
Q4 		$402K Buy
6,400
+6,300
+6,300% +$534K ﹤0.01% 4120
2021
Q3 		$17K Hold
100
– – ﹤0.01% 8581
2021
Q2 		$17K Buy
100
+97
+3,233% +$15.6K ﹤0.01% 8734
2021
Q1 		$40K Buy
+3
New +$464 ﹤0.01% 6867
2020
Q2 		– Sell
-17
Closed -$87K – 8508
2020
Q1 		$87K Buy
+17
New +$886 ﹤0.01% 4521
2019
Q4 		– Sell
-1
Closed -$3K – 8074
2019
Q3 		$3K Buy
+1
New +$34 ﹤0.01% 6839

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

Simplex Trading's ZLAB Position: Q1 2026 in Review

Simplex Trading increased its Zai Lab (ZLAB) stake by 903% in Q1 2026, buying an estimated $28.9K and bringing the position to 1,735 shares worth $32.6K. The position accounts for ﹤0.01% of the portfolio, ranked #6300.

Simplex Trading first reported a position in ZLAB in Q2 2018 and has held it in 21 quarters since. The position peaked at $634K in Q1 2024. 99 funds tracked by Wall St. Rank hold ZLAB as of Q1 2026.

  • Simplex Trading held 1,735 shares of Zai Lab worth $32.6K as of Q1 2026.
  • Simplex Trading bought 1,562 Zai Lab shares in Q1 2026, an estimated $28.9K.
  • Zai Lab made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6300 holding.
  • Simplex Trading first reported a position in Zai Lab in Q2 2018 and has held it in 21 quarters since.
  • Simplex Trading's Zai Lab position peaked at $634K in Q1 2024.
  • 99 funds tracked by Wall St. Rank held Zai Lab as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.