IR
Superintel
OverviewMarketsWatchlist
© 2026 IR SuperintelMethodologyContact

Rallybio Corp (RLYB)

CUSIP: 75120L209 | NYSE | 48 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/ANantahala Capital Management, LLC188,4223.6%Newly reportedJun 30, 2026No 13F filer matched
13G/ALaurion Capital Management LP00.0%No shares held

Institutional Holders — Q3 2026

Geode Capital Management, LLC33,943
0.0% of portfolio›$583.9K
Dimensional Fund Advisors LP19,458
0.0% of portfolio›$334.7K
Hartford Financial Management Inc.812
0.0% of portfolio›$14.0K
Caitong International Asset Management Co., Ltd421
0.0% of portfolio›$7.2K
SBI Securities Co., Ltd.77
0.0% of portfolio›$1.3K
Fortitude Family Office, LLC53
0.0% of portfolio›$912
Allworth Financial LP6
0.0% of portfolio›$96
StyleTurnoverLocationFiled
Geode Capital Management, LLC
33,943$583.9K0.0%IndexVery LowBoston, MA2026-11-06
Dimensional Fund Advisors LP
19,458$334.7K0.0%IndexLowAustin, TX2026-11-04
Hartford Financial Management Inc.
812$14.0K0.0%CoreLowWest Hartford, CT2026-10-21
Caitong International Asset Management Co., Ltd
421$7.2K0.0%GrowthVery HighHong Kong, South Korea2026-10-29
SBI Securities Co., Ltd.
77$1.3K0.0%Agg GrowthLowTokyo, Mexico2026-10-22
Fortitude Family Office, LLC
53$9120.0%ETFMediumScottsdale, AZ2026-10-14
Allworth Financial LP
6$960.0%IndexLowFolsom, CA2026-11-06
Jun 30, 2026
302,756 sh (Mar 31, 2026)
13G/ABalyasny Asset Management L.P.00.0%No shares heldJun 30, 2026No 13F filer matched
13G/ACormorant Asset Management, LP00.0%No shares heldJun 30, 2026No 13F filer matched
13D/A5AM Opportunities I, L.P.00.0%Fell below 5%May 4, 2026No 13F filer matched
13G/ANantahala Capital Management, LLC188,422
3.6% of class · Jun 30, 2026Newly reported
No 13F filer matched
13G/ALaurion Capital Management LP0
0.0% of class · Jun 30, 2026No shares held
302,756 sh (Mar 31, 2026)
13G/ABalyasny Asset Management L.P.0
0.0% of class · Jun 30, 2026No shares held
No 13F filer matched
13G/ACormorant Asset Management, LP0
0.0% of class · Jun 30, 2026No shares held
No 13F filer matched
13D/A5AM Opportunities I, L.P.0
0.0% of class · May 4, 2026Fell below 5%
No 13F filer matched