Jane Street
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Jane Street’s Rallybio RLYB Stock Holding History

Jane Street’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
2025
Q3 		– Sell
-1,468
Closed -$3.97K – 11612
2025
Q2 		$3.97K Buy
1,468
+140
+11% +$371 ﹤0.01% 9447
2025
Q1 		$6.95K Buy
+1,328
New +$8.39K ﹤0.01% 9221
2024
Q4 		– Sell
-2,784
Closed -$26.1K – 10382
2024
Q3 		$26.1K Sell
2,784
-3,851
-58% -$37.1K ﹤0.01% 9267
2024
Q2 		$71.1K Buy
+6,635
New +$89.9K ﹤0.01% 8841
2024
Q1 		– Sell
-3,090
Closed -$59.1K – 9946
2023
Q4 		$59.1K Buy
+3,090
New +$75.5K ﹤0.01% 8744

Other funds holding RLYB

Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
JJ
Johnson & Johnson New Brunswick, New Jersey $652M AUM 198.07% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $360M AUM 345.76% 1-Year Est. Return
NLVP
New Leaf Venture Partners New York $43M AUM 25.55% 1-Year Est. Return
TGA
TPG GP A Fort Worth, Texas $3.68B AUM 14.99% 1-Year Est. Return
PBPIA
Pivotal bioVenture Partners Investment Advisor San Francisco, California $280M AUM 181.4% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
AC
Almitas Capital Santa Monica, California $443M AUM 42.36% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AIIC
AJU IB Investment Company Seoul, South Korea $30.5M AUM 128.96% 1-Year Est. Return

Jane Street's RLYB Position: Q3 2025 in Review

Jane Street sold out of Rallybio (RLYB) in Q3 2025, closing a stake of 1,468 shares — an estimated $3.97K sold.

Jane Street first reported a position in RLYB in Q4 2023 and held it in 5 quarters. The position peaked at $71.1K in Q2 2024. 45 funds tracked by Wall St. Rank hold RLYB as of Q3 2025.

  • Jane Street reported no remaining Rallybio position as of Q3 2025 after selling out during the quarter.
  • Jane Street sold 1,468 Rallybio shares in Q3 2025, an estimated $3.97K.
  • Jane Street first reported a position in Rallybio in Q4 2023 and held it in 5 quarters.
  • Jane Street's Rallybio position peaked at $71.1K in Q2 2024.
  • 45 funds tracked by Wall St. Rank held Rallybio as of Q3 2025.

Based on Jane Street's 13F filing for Q3 2025, filed 14 Nov 2025.