Rock Springs Capital Management’s Zai Lab ZLAB Stock Holding History

Rock Springs 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	$15.3M	Buy	814,707 +3,161	+0.4%	+$58.6K	0.9%	37
2025 Q4	$14.3M	Buy	811,546 +20,353	+3%	+$476K	0.73%	41
2025 Q3	$26.8M	Sell	791,193 -80,199	-9%	-$2.76M	1.57%	22
2025 Q2	$30.5M	Sell	871,392 -33,200	-4%	-$1.09M	1.9%	19
2025 Q1	$32.7M	Sell	904,592 -400,745	-31%	-$12.3M	1.87%	17
2024 Q4	$34.2M	Sell	1,305,337 -10,336	-0.8%	-$287K	1.3%	27
2024 Q3	$31.8M	Buy	1,315,673 +17,800	+1%	+$336K	1.03%	37
2024 Q2	$22.5M	Buy	1,297,873 +750	+0.1%	+$13.2K	0.68%	46
2024 Q1	$20.8M	Buy	1,297,123 +160,100	+14%	+$3.37M	0.53%	58
2023 Q4	$31.1M	Sell	1,137,023 -100,000	-8%	-$2.64M	0.77%	44
2023 Q3	$30.1M	Buy	1,237,023 +14,600	+1%	+$389K	0.81%	39
2023 Q2	$33.9M	Buy	1,222,423 +162,723	+15%	+$5.32M	0.81%	41
2023 Q1	$35.2M	Hold	1,059,700	–	–	0.84%	45
2022 Q4	$32.5M	Sell	1,059,700 -132,700	-11%	-$4.19M	0.78%	45
2022 Q3	$40.8M	Sell	1,192,400 -23,500	-2%	-$1.01M	1.05%	33
2022 Q2	$42.2M	Buy	1,215,900 +10,000	+0.8%	+$353K	1.23%	29
2022 Q1	$53M	Buy	1,205,900 +25,200	+2%	+$1.22M	1.34%	28
2021 Q4	$74.2M	Buy	1,180,700 +102,950	+10%	+$8.73M	1.71%	17
2021 Q3	$114M	Buy	1,077,750 +63,750	+6%	+$9.15M	2.39%	7
2021 Q2	$179M	Buy	1,014,000 +80,500	+9%	+$12.9M	3.55%	2
2021 Q1	$125M	Buy	933,500 +78,601	+9%	+$12.2M	2.72%	3
2020 Q4	$116M	Buy	854,899 +31,372	+4%	+$3.19M	2.47%	5
2020 Q3	$68.5M	Buy	823,527 +10,281	+1%	+$825K	1.74%	11
2020 Q2	$66.8M	Buy	813,246 +63,246	+8%	+$4.28M	1.83%	8
2020 Q1	$38.6M	Buy	750,000 +125,000	+20%	+$6.52M	1.6%	16
2019 Q4	$26M	Buy	625,000 +50,000	+9%	+$1.85M	0.82%	51
2019 Q3	$18.6M	Buy	575,000 +25,000	+5%	+$858K	0.74%	51
2019 Q2	$19.2M	Buy	550,000 +136,600	+33%	+$4.02M	0.7%	52
2019 Q1	$12.2M	Buy	413,400 +63,400	+18%	+$1.74M	0.47%	72
2018 Q4	$8.13M	Hold	350,000	–	–	0.38%	78
2018 Q3	$6.82M	Buy	350,000 +50,000	+17%	+$1.08M	0.25%	100
2018 Q2	$6.97M	Buy	300,000 +5,000	+2%	+$108K	0.27%	103
2018 Q1	$6.3M	Hold	295,000	–	–	0.27%	103
2017 Q4	$6.26M	Sell	295,000 -17,500	-6%	-$465K	0.28%	97
2017 Q3	$8.44M	Buy	+312,500	New	+$8.72M	0.39%	83