Dimensional Fund Advisors
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Dimensional Fund Advisors’s Rallybio RLYB Stock Holding History

Dimensional Fund Advisors’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 		$101K Buy
+11,280
New +$77.1K ﹤0.01% 3119
2024
Q4 		– Sell
-2,650
Closed -$24.8K – 3358
2024
Q3 		$24.8K Hold
2,650
– – ﹤0.01% 3326
2024
Q2 		$28.4K Hold
2,650
– – ﹤0.01% 3340
2024
Q1 		$39.2K Sell
2,650
-1,055
-28% -$14.7K ﹤0.01% 3343
2023
Q4 		$70.8K Sell
3,705
-395
-10% -$9.65K ﹤0.01% 3315
2023
Q3 		$111K Sell
4,100
-176
-4% -$7.62K ﹤0.01% 3301
2023
Q2 		$194K Buy
4,276
+463
+12% +$22.7K ﹤0.01% 3240
2023
Q1 		$174K Sell
3,813
-1,018
-21% -$52.6K ﹤0.01% 3230
2022
Q4 		$254 Buy
4,831
+1,935
+67% +$114K ﹤0.01% 3182
2022
Q3 		$335K Buy
+2,896
New +$258K ﹤0.01% 3136

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

Dimensional Fund Advisors's RLYB Position: Q1 2026 in Review

Dimensional Fund Advisors opened a new position in Rallybio (RLYB) in Q1 2026: 11,280 shares worth $101K. The stake represents ﹤0.01% of the portfolio and ranks #3119 among its holdings. This is a return to the name: Dimensional Fund Advisors previously reported a position in RLYB as recently as Q3 2024.

Dimensional Fund Advisors first reported a position in RLYB in Q3 2022 and has held it in 10 quarters since. The position peaked at $335K in Q3 2022. 38 funds tracked by Wall St. Rank hold RLYB as of Q1 2026.

  • Dimensional Fund Advisors held 11,280 shares of Rallybio worth $101K as of Q1 2026.
  • Rallybio was a new Dimensional Fund Advisors position in Q1 2026.
  • Rallybio made up ﹤0.01% of Dimensional Fund Advisors's portfolio in Q1 2026, its #3119 holding.
  • Dimensional Fund Advisors first reported a position in Rallybio in Q3 2022 and has held it in 10 quarters since.
  • Dimensional Fund Advisors's Rallybio position peaked at $335K in Q3 2022.
  • 38 funds tracked by Wall St. Rank held Rallybio as of Q1 2026.

Based on Dimensional Fund Advisors's 13F filing for Q1 2026, filed 7 May 2026.