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 		$32.6K Buy
1,735
+1,562
+903% +$28.9K ﹤0.01% 6300
2025
Q4 		$3.05K Buy
+173
New +$4.05K ﹤0.01% 7681
2025
Q1 		– Sell
-339
Closed -$10.4K – 9881
2024
Q4 		$8K Sell
339
-11,858
-97% -$329K ﹤0.01% 7375
2024
Q3 		$294K Sell
12,197
-16,333
-57% -$309K ﹤0.01% 4155
2024
Q2 		$494K Sell
28,530
-11,097
-28% -$195K ﹤0.01% 3680
2024
Q1 		$634K Buy
39,627
+24,834
+168% +$523K ﹤0.01% 3607
2023
Q4 		$404K Sell
14,793
-1,483
-9% -$39.1K ﹤0.01% 3924
2023
Q3 		$395K Buy
16,276
+1,694
+12% +$45.1K ﹤0.01% 3651
2023
Q2 		$404K Buy
+14,582
New +$477K ﹤0.01% 3534
2022
Q2 		– Sell
-1,008
Closed -$35.5K – 11293
2022
Q1 		$44K Buy
1,008
+747
+286% +$36.1K ﹤0.01% 7321
2021
Q4 		$16K Sell
261
-84
-24% -$7.12K ﹤0.01% 8631
2021
Q3 		$61K Hold
345
– – ﹤0.01% 7289
2021
Q2 		$61K Sell
345
-593
-63% -$95.4K ﹤0.01% 7415
2021
Q1 		$125K Buy
+938
New +$145K ﹤0.01% 5429
2020
Q2 		– Sell
-155
Closed -$10.5K – 8509
2020
Q1 		$7K Sell
155
-2,712
-95% -$141K ﹤0.01% 6705
2019
Q4 		$119K Buy
2,867
+2,739
+2,140% +$101K ﹤0.01% 4332
2019
Q3 		$4K Buy
+128
New +$4.39K ﹤0.01% 6731
2019
Q2 		– Sell
-3,771
Closed -$111K – 7915
2019
Q1 		$111K Buy
3,771
+2,764
+274% +$75.7K ﹤0.01% 4235
2018
Q4 		$23K Buy
1,007
+623
+162% +$11.6K ﹤0.01% 5231
2018
Q3 		$7K Sell
384
-88
-19% -$1.91K ﹤0.01% 6629
2018
Q2 		$10K Buy
+472
New +$10.2K ﹤0.01% 6363

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.