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 		$95.9K Buy
5,100
+600
+13% +$11.1K ﹤0.01% 5133
2025
Q4 		$79.4K Buy
4,500
+2,100
+88% +$49.2K ﹤0.01% 5230
2025
Q3 		$81K Buy
2,400
+1,200
+100% +$41.3K ﹤0.01% 5991
2025
Q2 		$41K Sell
1,200
-1,200
-50% -$39.5K ﹤0.01% 6128
2025
Q1 		$86K Buy
2,400
+1,700
+243% +$52.3K ﹤0.01% 5213
2024
Q4 		$18K Sell
700
-81,600
-99% -$2.27M ﹤0.01% 6786
2024
Q3 		$1.99M Sell
82,300
-2,100
-2% -$39.7K ﹤0.01% 2281
2024
Q2 		$1.46M Sell
84,400
-5,900
-7% -$104K ﹤0.01% 2516
2024
Q1 		$1.45M Buy
90,300
+63,100
+232% +$1.33M ﹤0.01% 2735
2023
Q4 		$743K Buy
27,200
+400
+1% +$10.6K ﹤0.01% 3311
2023
Q3 		$651K Buy
26,800
+100
+0.4% +$2.66K ﹤0.01% 3112
2023
Q2 		$740K Buy
26,700
+26,400
+8,800% +$864K ﹤0.01% 2897
2023
Q1 		$9K Sell
300
-300
-50% -$11.5K ﹤0.01% 7665
2022
Q4 		$18K Sell
600
-900
-60% -$28.4K ﹤0.01% 7002
2022
Q3 		$51K Buy
1,500
+800
+114% +$34.2K ﹤0.01% 6434
2022
Q2 		$24K Sell
700
-700
-50% -$24.7K ﹤0.01% 7415
2022
Q1 		$61K Buy
1,400
+500
+56% +$24.2K ﹤0.01% 6867
2021
Q4 		$56K Sell
900
-1,200
-57% -$102K ﹤0.01% 7115
2021
Q3 		$374K Hold
2,100
– – ﹤0.01% 4546
2021
Q2 		$371K Buy
2,100
+2,065
+5,900% +$332K ﹤0.01% 4627
2021
Q1 		$467K Buy
+35
New +$5.42K ﹤0.01% 3473
2020
Q2 		– Sell
-4
Closed -$20K – 8510
2020
Q1 		$20K Hold
4
– – ﹤0.01% 5969
2019
Q4 		$16K Sell
4
-9
-69% -$332 ﹤0.01% 6117
2019
Q3 		$42K Buy
13
+10
+333% +$343 ﹤0.01% 5185
2019
Q2 		$10K Sell
3
-5
-63% -$147 ﹤0.01% 6128
2019
Q1 		$23K Buy
8
+5
+167% +$137 ﹤0.01% 5629
2018
Q4 		$6K Hold
3
– – ﹤0.01% 6155
2018
Q3 		$5K Sell
3
-19
-86% -$412 ﹤0.01% 6790
2018
Q2 		$51K Buy
+22
New +$474 ﹤0.01% 5044

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.