Morgan Stanley
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Morgan Stanley’s Rallybio RLYB Stock Holding History

Morgan Stanley’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 		$2K Sell
125
-1
-0.8% -$13 ﹤0.01% 7407
2026
Q1 		$1.13K Sell
126
-454
-78% -$3.1K ﹤0.01% 7417
2025
Q4 		$3.18K Hold
580
– – ﹤0.01% 7154
2025
Q3 		$2.31K Sell
580
-3,981
-87% -$16.7K ﹤0.01% 7276
2025
Q2 		$12.3K Hold
4,561
– – ﹤0.01% 6793
2025
Q1 		$23.9K Hold
4,561
– – ﹤0.01% 6511
2024
Q4 		$35K Hold
4,561
– – ﹤0.01% 6397
2024
Q3 		$42.7K Sell
4,561
-2,325
-34% -$22.4K ﹤0.01% 6265
2024
Q2 		$73.8K Sell
6,886
-2,662
-28% -$36.1K ﹤0.01% 6060
2024
Q1 		$141K Sell
9,548
-2,842
-23% -$39.6K ﹤0.01% 5864
2023
Q4 		$237K Buy
12,390
+10,418
+528% +$255K ﹤0.01% 5634
2023
Q3 		$53.2K Sell
1,972
-768
-28% -$33.3K ﹤0.01% 6143
2023
Q2 		$124K Buy
2,740
+1,573
+135% +$77.1K ﹤0.01% 5851
2023
Q1 		$53.3K Buy
1,167
+964
+475% +$49.8K ﹤0.01% 6265
2022
Q4 		$10.7K Sell
203
-606
-75% -$35.8K ﹤0.01% 6909
2022
Q3 		$94K Sell
809
-209
-21% -$18.6K ﹤0.01% 6113
2022
Q2 		$61K Sell
1,018
-209
-17% -$15.7K ﹤0.01% 6520
2022
Q1 		$69K Buy
1,227
+240
+24% +$19.9K ﹤0.01% 6535
2021
Q4 		$76K Buy
987
+718
+267% +$83.5K ﹤0.01% 6596
2021
Q3 		$38K Buy
+269
New +$31.6K ﹤0.01% 6834

Other funds holding RLYB

ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
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

Morgan Stanley's RLYB Position: Q2 2026 in Review

Morgan Stanley reduced its Rallybio (RLYB) stake by 0.79% in Q2 2026, selling an estimated $13 and leaving 125 shares worth $2K. The position accounts for ﹤0.01% of the portfolio, ranked #7407.

Morgan Stanley first reported a position in RLYB in Q3 2021 and has held it in 20 quarters since. The position peaked at $237K in Q4 2023. 37 funds tracked by Wall St. Rank hold RLYB as of Q2 2026.

  • Morgan Stanley held 125 shares of Rallybio worth $2K as of Q2 2026.
  • Morgan Stanley sold 1 Rallybio share in Q2 2026, an estimated $13.
  • Rallybio made up ﹤0.01% of Morgan Stanley's portfolio in Q2 2026, its #7407 holding.
  • Morgan Stanley first reported a position in Rallybio in Q3 2021 and has held it in 20 quarters since.
  • Morgan Stanley's Rallybio position peaked at $237K in Q4 2023.
  • 37 funds tracked by Wall St. Rank held Rallybio as of Q2 2026.

Based on Morgan Stanley's 13F filing for Q2 2026, filed 13 Aug 2026.