RALLYBIO CORP

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RLYB·75120L209·US·Common Stock·Healthcare - Biotechnology-13D/G

RLYB (RALLYBIO CORP) is held by 26 institutional investors as of Q2 2026. Largest holders: CITADEL ADVISORS LLC ($12.7M), FMR LLC ($12.7M), VIKING GLOBAL INVESTORS LP ($8.4M). Net institutional sentiment: Bullish.

26

Holders

(1 Elite)

$43.9M

Total Value

74% (19)

Consensus

14 buying - 5 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)36

Insider (Form 4)45

Activist (13D/13G)37

Congressional (STOCK Act)48

Holder Quality

22

★★★★★

Elite

88

★★★★

Strong

30

★★★

Solid

68

★★

Below

89

★

Weak

Held by 26 funds

1 elite

Who's Trading

Source dates: Price Aug 18, 2026 · Insiders May 20, 2026 · Activists Aug 14, 2026 · Congress none

ActivistBALYASNY ASSET MANAGEMENT L.P.0.0%Aug 14, 2026

ActivistCACormorant Asset Management, LP0.0%Aug 14, 2026

ActivistNANantahala Capital Management, LLC3.6%Aug 14, 2026

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Top Holders

Top Holders (26)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
CITADEL ADVISORS LLC	Increased	7.7M(+386x)	$12.7M	0.0%	+5.01%	45
FMR LLC	Increased	794,720(+0.2%)	$12.7M	0.0%	+132.78%	28
VIKING GLOBAL INVESTORS LP	Unchanged	524,347	$8.4M	0.0%	-86.90%	0
RENAISSANCE TECHNOLOGIES LLC	Increased	199,907(+27.7%)	$3.2M	0.0%	+64.16%	33
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	172,497(+54.0%)	$2.8M	0.0%	+33.54%	37
Mariner, LLC	Unchanged	50,566	$809,056	0.0%	-64.10%	0
JANE STREET GROUP, LLC	New	47,423	$758,768	0.0%	+4.81%	34
GEODE CAPITAL MANAGEMENT, LLC	Decreased	32,047(-9.5%)	$512,865	0.0%	-72.21%	0
BlackRock, Inc.	Increased	30,332(+73.5%)	$485,312	0.0%	+52.35%	25
XTX Topco Ltd	Increased	21,497(+91.5%)	$343,952	0.0%	+74.06%	37
VFVANGUARD FIDUCIARY TRUST CO	Increased	16,820(+24.2%)	$269,120	0.0%	+42.95%	28
TWO SIGMA INVESTMENTS, LP	New	16,619	$265,904	0.0%	+4.81%	32
STATE STREET CORP	New	12,996	$207,936	0.0%	+4.81%	35
Quadrature Capital Ltd	New	12,995	$207,920	0.0%	+4.81%	32
DIMENSIONAL FUND ADVISORS LP	Unchanged	11,280	$180,480	0.0%	+56.73%	0
VGVanguard Global Advisers, LLC	Unchanged	1,442	$23,072	0.0%	+56.73%	0
MGMERCER GLOBAL ADVISORS INC /ADV	New	1,250	$20,000	0.0%	+4.81%	29
UBS Group AG	Decreased	146(-98.2%)	$2,336	0.0%	+135.20%	0
MORGAN STANLEY	Decreased	125(-0.8%)	$2,000	0.0%	+56.44%	0
BNP PARIBAS FINANCIAL MARKETS	Unchanged	120	$1,920	0.0%	+125.71%	0

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer