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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
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 $10B AUM 135.35% 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
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

RA Capital Management's ZLAB Position: Q1 2026 in Review

RA Capital Management opened a new position in Zai Lab (ZLAB) in Q1 2026: 5,707,262 shares worth $107M. The stake represents 1.14% of the portfolio and ranks #20 among its holdings. This is a return to the name: RA Capital Management previously reported a position in ZLAB as recently as Q1 2025.

RA Capital Management first reported a position in ZLAB in Q4 2024 and has held it in 3 quarters since. 99 funds tracked by Wall St. Rank hold ZLAB as of Q1 2026.

  • RA Capital Management held 5,707,262 shares of Zai Lab worth $107M as of Q1 2026.
  • Zai Lab was a new RA Capital Management position in Q1 2026.
  • Zai Lab made up 1.14% of RA Capital Management's portfolio in Q1 2026, its #20 holding.
  • RA Capital Management first reported a position in Zai Lab in Q4 2024 and has held it in 3 quarters since.
  • 99 funds tracked by Wall St. Rank held Zai Lab as of Q1 2026.

Based on RA Capital Management's 13F filing for Q1 2026, filed 15 May 2026.