RCM
ZLAB icon

RA Capital Management’s Zai Lab ZLAB Stock Holding History

RA 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
Q2 		$109M Buy
5,743,533
+36,271
+0.6% +$717K 0.95% 26
2026
Q1 		$107M Buy
+5,707,262
New +$106M 1.14% 20
2025
Q2 		– Sell
-1,295,040
Closed -$46.8M – 86
2025
Q1 		$46.8M Hold
1,295,040
– – 0.78% 24
2024
Q4 		$33.9M Buy
+1,295,040
New +$35.9M 0.45% 43

Other funds holding ZLAB

RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

RA Capital Management's ZLAB Position: Q2 2026 in Review

RA Capital Management increased its Zai Lab (ZLAB) stake by 0.64% in Q2 2026, buying an estimated $717K and bringing the position to 5,743,533 shares worth $109M. The position accounts for 0.95% of the portfolio, ranked #26.

RA Capital Management first reported a position in ZLAB in Q4 2024 and has held it in 4 quarters since. 93 funds tracked by Wall St. Rank hold ZLAB as of Q2 2026.

  • RA Capital Management held 5,743,533 shares of Zai Lab worth $109M as of Q2 2026.
  • RA Capital Management bought 36,271 Zai Lab shares in Q2 2026, an estimated $717K.
  • Zai Lab made up 0.95% of RA Capital Management's portfolio in Q2 2026, its #26 holding.
  • RA Capital Management first reported a position in Zai Lab in Q4 2024 and has held it in 4 quarters since.
  • 93 funds tracked by Wall St. Rank held Zai Lab as of Q2 2026.

Based on RA Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.