Two Sigma Investments
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Two Sigma Investments’s Rallybio RLYB Stock Holding History

Two Sigma Investments’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
Q1 		– Sell
-4,625
Closed -$25.4K – 4874
2025
Q4 		$25.4K Buy
4,625
+1,943
+72% +$10K ﹤0.01% 3979
2025
Q3 		$10.7K Sell
2,682
-5,291
-66% -$22.2K ﹤0.01% 3622
2025
Q2 		$21.6K Sell
7,973
-366
-4% -$970 ﹤0.01% 3115
2025
Q1 		$43.7K Sell
8,339
-1,262
-13% -$7.97K ﹤0.01% 3057
2024
Q4 		$73.7K Sell
9,601
-1,190
-11% -$9.97K ﹤0.01% 3003
2024
Q3 		$101K Buy
10,791
+4,134
+62% +$39.8K ﹤0.01% 2897
2024
Q2 		$71.4K Buy
+6,657
New +$90.2K ﹤0.01% 2859

Other funds holding RLYB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
CAM
Cormorant Asset Management Boston, Massachusetts $1.99B AUM 737.95% 1-Year Est. Return
TGA
TPG GP A Fort Worth, Texas $3.68B AUM 14.99% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
LCM
Laurion Capital Management New York $2.29B AUM 75.73% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return
PBPIA
Pivotal bioVenture Partners Investment Advisor San Francisco, California $280M AUM 181.4% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $360M AUM 345.76% 1-Year Est. Return
AC
Almitas Capital Santa Monica, California $443M AUM 42.36% 1-Year Est. Return

Two Sigma Investments's RLYB Position: Q1 2026 in Review

Two Sigma Investments sold out of Rallybio (RLYB) in Q1 2026, closing a stake of 4,625 shares — an estimated $25.4K sold.

Two Sigma Investments first reported a position in RLYB in Q2 2024 and held it in 7 quarters. The position peaked at $101K in Q3 2024. 38 funds tracked by Wall St. Rank hold RLYB as of Q1 2026.

  • Two Sigma Investments reported no remaining Rallybio position as of Q1 2026 after selling out during the quarter.
  • Two Sigma Investments sold 4,625 Rallybio shares in Q1 2026, an estimated $25.4K.
  • Two Sigma Investments first reported a position in Rallybio in Q2 2024 and held it in 7 quarters.
  • Two Sigma Investments's Rallybio position peaked at $101K in Q3 2024.
  • 38 funds tracked by Wall St. Rank held Rallybio as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.