ACM
RLYB icon

ADAR1 Capital Management’s Rallybio RLYB Stock Holding History

ADAR1 Capital Management’s Portfolio RLYB Stock Details RLYB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$14.8M Buy
926,352
+905,817
+4,411% +$11.7M 0.68% 36
2026
Q1 		$184K Buy
+20,535
New +$140K 0.01% 265
2025
Q2 		– Sell
-1,675
Closed -$8.77K – 232
2025
Q1 		$8.77K Hold
1,675
– – ﹤0.01% 196
2024
Q4 		$12.9K Buy
1,675
+12
+0.7% +$101 ﹤0.01% 205
2024
Q3 		$15.6K Buy
1,663
+263
+19% +$2.53K ﹤0.01% 247
2024
Q2 		$15K Sell
1,400
-843
-38% -$11.4K ﹤0.01% 226
2024
Q1 		$33.2K Buy
+2,243
New +$31.3K 0.01% 203

Other funds holding RLYB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.1B AUM 21.36% 1-Year Est. Return
TGA
TPG GP A Fort Worth, Texas $5B AUM 58.56% 1-Year Est. Return
PBPIA
Pivotal bioVenture Partners Investment Advisor San Francisco, California $308M AUM 120.89% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AC
Almitas Capital Santa Monica, California $417M AUM 22.81% 1-Year Est. Return
RC
Rangeley Capital New Canaan, Connecticut $109M AUM 97.13% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

ADAR1 Capital Management's RLYB Position: Q2 2026 in Review

ADAR1 Capital Management increased its Rallybio (RLYB) stake by 4,411% in Q2 2026, buying an estimated $11.7M and bringing the position to 926,352 shares worth $14.8M. The position accounts for 0.68% of the portfolio, ranked #36.

ADAR1 Capital Management first reported a position in RLYB in Q1 2024 and has held it in 7 quarters since. 37 funds tracked by Wall St. Rank hold RLYB as of Q2 2026.

  • ADAR1 Capital Management held 926,352 shares of Rallybio worth $14.8M as of Q2 2026.
  • ADAR1 Capital Management bought 905,817 Rallybio shares in Q2 2026, an estimated $11.7M.
  • Rallybio made up 0.68% of ADAR1 Capital Management's portfolio in Q2 2026, its #36 holding.
  • ADAR1 Capital Management first reported a position in Rallybio in Q1 2024 and has held it in 7 quarters since.
  • 37 funds tracked by Wall St. Rank held Rallybio as of Q2 2026.

Based on ADAR1 Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.