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Tower Research Capital (TRC)’s Rallybio RLYB Stock Holding History

Tower Research Capital (TRC)’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 		$8.14K Buy
907
+341
+60% +$2.33K ﹤0.01% 3984
2025
Q4 		$3.1K Sell
566
-707
-56% -$3.64K ﹤0.01% 4423
2025
Q3 		$5.08K Buy
1,273
+355
+39% +$1.49K ﹤0.01% 4268
2025
Q2 		$2.48K Buy
918
+269
+41% +$713 ﹤0.01% 4646
2025
Q1 		$3.4K Buy
649
+195
+43% +$1.23K ﹤0.01% 4418
2024
Q4 		$3.49K Buy
454
+21
+5% +$176 ﹤0.01% 4649
2024
Q3 		$4.05K Sell
433
-1,214
-74% -$11.7K ﹤0.01% 4701
2024
Q2 		$17.7K Buy
1,647
+632
+62% +$8.56K ﹤0.01% 3826
2024
Q1 		$15K Buy
1,015
+551
+119% +$7.68K ﹤0.01% 3267
2023
Q4 		$8.86K Buy
464
+128
+38% +$3.13K ﹤0.01% 4455
2023
Q3 		$9.05K Buy
336
+143
+74% +$6.19K ﹤0.01% 4274
2023
Q2 		$8.73K Sell
193
-64
-25% -$3.14K ﹤0.01% 4379
2023
Q1 		$12K Buy
257
+124
+93% +$6.41K ﹤0.01% 4117
2022
Q4 		$7K Sell
133
-264
-66% -$15.6K ﹤0.01% 4608
2022
Q3 		$46K Buy
397
+154
+63% +$13.7K ﹤0.01% 3243
2022
Q2 		$15K Buy
243
+79
+48% +$5.94K ﹤0.01% 4087
2022
Q1 		$9K Sell
164
-165
-50% -$13.7K ﹤0.01% 4483
2021
Q4 		$25K Buy
329
+270
+458% +$31.4K ﹤0.01% 3434
2021
Q3 		$8K Buy
+59
New +$6.92K ﹤0.01% 4558

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

Tower Research Capital (TRC)'s RLYB Position: Q1 2026 in Review

Tower Research Capital (TRC) increased its Rallybio (RLYB) stake by 60% in Q1 2026, buying an estimated $2.33K and bringing the position to 907 shares worth $8.14K. The position accounts for ﹤0.01% of the portfolio, ranked #3984.

Tower Research Capital (TRC) first reported a position in RLYB in Q3 2021 and has held it in 19 quarters since. The position peaked at $46K in Q3 2022. 38 funds tracked by Wall St. Rank hold RLYB as of Q1 2026.

  • Tower Research Capital (TRC) held 907 shares of Rallybio worth $8.14K as of Q1 2026.
  • Tower Research Capital (TRC) bought 341 Rallybio shares in Q1 2026, an estimated $2.33K.
  • Rallybio made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #3984 holding.
  • Tower Research Capital (TRC) first reported a position in Rallybio in Q3 2021 and has held it in 19 quarters since.
  • Tower Research Capital (TRC)'s Rallybio position peaked at $46K in Q3 2022.
  • 38 funds tracked by Wall St. Rank held Rallybio as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.