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RLYB

Rallybio Corporation Common Stock

Nasdaq · usd

$16.65+0.01 (+0.06%)
As of 2:23:56 PM EDT on Oct 26, 2026 · 15-minute delayed

Rallybio Corporation Common Stock (RLYB) trades at $16.65 (+0.06%) as of 2:23:56 PM EDT on Oct 26, 2026, -0.57% over the past month. Market cap is $88.4M, with 4.9 days to cover in short interest.

Stock performance

How Rallybio Corporation Common Stock (RLYB) stock has performed from one day to one year, with its 52-week range.

-1.11%
-$0.19 over 1D
$16.42$16.51$16.60$16.699:30 AM9:35 AM9:40 AM2:10 PM$16.53
1D
-0.69%
1W
+1.07%
1M
-0.57%
YTD
+201.07%
1Y
+230.55%
52-wk range
$3.67 – $17.57

Key statistics

Today's trading snapshot for RLYB: day range, open, previous close, volume and market cap.

Day range
$16.40 – $16.71
Open
$16.71
Prev close
$16.64
Volume
2.11K
Market cap
$88.4M
Shares out
5.31M

Valuation and profitability ratios: P/E, P/S, ROE

Valuation and profitability ratios for Rallybio Corporation Common Stock: P/E, P/S, P/B, ROE and more.

P/E
1.94
P/S
136.84
P/B
0.94
P/FCF
3.31
ROE
48.2%
ROA
46.5%
Debt/Equity
0.00
Div yield
0.00%

As of Oct 23, 2026

8-K filings

Material corporate events Rallybio Corporation Common Stock has disclosed to the SEC on Form 8-K.

  • Executive compensation changeSep 9, 2026

    In connection with Mr. Lieber's employment transition, he entered into an agreement ... pursuant to which, following the Employment Transition Date, he will receive a base salary of $420,000 and be entitled to participate in Rallybio's benefit plans, but will not be entitled to receive an annual bonus for 2026 or any subsequent year during which he is employed. Upon his termination, Mr. Lieber will be entitled to severance payments as set forth in his Employment Agreement ... and the Second Amendment to his Employment Agreement.

  • Merger agreementJun 1, 2026

    On May 31, 2026, Rallybio Corporation, a Delaware corporation ('Rallybio'), entered into an Agreement and Plan of Merger and Reorganization (the 'Merger Agreement') with Avenzo Therapeutics, Inc., a Delaware corporation ('Avenzo'), a clinical-stage biotechnology company developing next-generation oncology therapies, and Farmington Merger Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Rallybio ('Merger Sub'). Upon the terms and subject to the satisfaction of the conditions described in the Merger Agreement, Merger Sub will be merged with and into Avenzo, with Avenzo surviving as a wholly owned subsidiary of Rallybio (the 'Merger' and, together with all of the other transactions contemplated by the Merger Agreement, the 'Contemplated Transactions').

  • Deal terminationMay 4, 2026

    On May 3, 2026, Candid terminated the Merger Agreement concurrently with entering into a Permitted Alternative Agreement (as defined in the Merger Agreement) with UCB S.A. ('UCB'). As a result of the termination of the Merger Agreement, Rallybio is entitled to receive a $50,000,000 Parent Termination Fee (as defined in the Merger Agreement).

  • Executive compensation changeMar 31, 2026

    Dr. Ryder will receive the severance payments and benefits to which he is entitled under his previously disclosed employment agreement with Rallybio upon a termination by Rallybio without cause (the Initial Severance Amounts). In addition, upon the closing of Rallybio's pending business combination with Candid Therapeutics, Inc., Dr. Ryder will receive the severance payments and benefits to which he is entitled under the Employment Agreement upon a termination by Rallybio without cause following a change of control, less the Initial Severance Amounts paid to him.

  • Private placementMar 2, 2026

    Concurrently with entering into the Merger Agreement, Candid entered into a subscription agreement (the 'Subscription Agreement') with certain accredited investors (the 'Investors'). Pursuant to the Subscription Agreement, and subject to the terms and conditions therein, Candid agreed to sell, and the Investors agreed to purchase, immediately prior to the Effective Time, shares of Candid common stock for an aggregate purchase price of $505.5 million (the 'Concurrent Financing').

Dividend history and stock splits

Rallybio Corporation Common Stock's recent dividend payments and stock splits.

Dividends

No recent dividends.

Splits

  • 1-for-8Feb 6, 2026

RLYB short interest

How heavily RLYB is shorted: shares short, days to cover and average daily volume.

Days to cover
4.9
Short interest
49.25K
Avg volume
10.1K

As of · reported to FINRA twice monthly.

RLYB news

The latest news and headlines about Rallybio Corporation Common Stock (RLYB).

Frequently asked questions

What is the Rallybio Corporation Common Stock (RLYB) stock price today?

Rallybio Corporation Common Stock (RLYB) is trading at $16.65 (+0.06% on the day) as of 2:23:56 PM EDT on Oct 26, 2026. Prices are delayed at least 15 minutes; real-time quotes are available from the Massive API.

What is Rallybio Corporation Common Stock?

Rallybio Corp is a clinical-stage biotechnology company comprised of experienced biopharma industry leaders with extensive research, development, and rare disease expertise with a mission to develop and commercialize life-transforming therapies for patients with severe and rare…

What is the short interest in RLYB?

As of Sep 30, 2026, RLYB has 49.25K shares short and 4.9 days to cover.

What exchange is RLYB listed on?

Rallybio Corporation Common Stock (RLYB) trades on Nasdaq in USD, in the PHARMACEUTICAL PREPARATIONS industry.

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