1 tracked superinvestor hold RALLYBIO CORP (RLYB), worth $8M combined, led by Andreas Halvorsen. Smart money is holding RLYB as of the latest 13F filings.
Current price
$16.93
+261.0%
1Y
Rallybio Corporation is a clinical-stage biotechnology firm dedicated to discovering and bringing to market transformative therapies for individuals facing severe and uncommon illnesses. Its most advanced therapeutic candidate, RLYB212, is a monoclonal anti-HPA-1a antibody currently undergoing Phase II clinical trials. This candidate, along with RLYB211, is aimed at preventing fetal and neonatal…
Market cap
$50M
P/E
-5.92
Div yield
0.0%
Revenue YoY
34.9%
Analyst target
—
Snapshot for context. For deep analysis use a stock screener — this page is about who owns it.
Superinvestors holding
1
tracked 13F / N-PORT funds
Combined value
$8M
disclosed long exposure
Tier-1 conviction
1
concentrated holders
Net this quarter
0
0 buying · 0 selling
Smart money is holding RLYB steady this quarter — buys and sells are balanced.
RALLYBIO CORP (RLYB) is held by 1 tracked funds worth $8M combined, 1 of them concentrated Tier-1 managers whose positions carry real conviction.
The largest position belongs to Andreas Halvorsen at 0% of their book — no single tracked manager treats it as an outsized, top-weighted bet.
Tracked holders were largely static this quarter — no new opens, adds or trims of size — suggesting the position is being held rather than actively traded.
| Investor | Move | % of their portfolio | Position value |
|---|---|---|---|
| Held | 0% | $8M |
Tier badge = signal quality: 1 concentrated conviction · 2 quant/multi (context) · 3 retail & diversified. Only Tier 1 holdings feed the consensus signal.
Which superinvestors own RLYB?
1 tracked funds hold RALLYBIO CORP (RLYB), the largest being Andreas Halvorsen (Viking Global Investors) at 0% of its 13F portfolio. 1 of them are concentrated Tier-1 conviction managers.
Is smart money buying or selling RLYB?
In the most recent 13F quarter, 0 tracked funds added or opened RLYB and 0 trimmed it.
How much RLYB do tracked funds hold?
Combined disclosed long exposure to RLYB across tracked superinvestors is $8M as of the Jun 2026 filings.
One email when a tracked manager opens, adds to or files to sell a position — from Form 4, 13D and Form 144, not the 45-day-old 13F.
Holdings aggregated from the latest SEC 13F & N-PORT filings via FMP · Jun 2026 quarter. Long equity positions only, reported with up to a 45-day delay — for activity between filings see real-time moves. Not financial advice.