NASDAQ · KRROHealthcarePharmaceuticals

Korro Bio, Inc. Common Stock (KRRO)

$16.62+4.79%
Close Nov 4, 2026 · split-adjusted
Nov 4, 2026$16.62▼ 50.90% in range
Nov 4, 2025Low $5.28 · High $33.85Nov 4, 2026
What changed · written from our data
As of Nov 4, 2026

Korro Bio closed at $16.62 on Nov 4, up 4.79%, 54.9% below its 52-week closing high. Volume of 262.9K shares was 1.16× its 20-day average (close to normal).

Split-adjusted performance: +70.3% over one month, +24.6% over six months, -54.9% over one year.

Short interest was 1.7M shares at the Oct 15 settlement, up 3.4% from the prior report (14.8% of float, 9.6 days to cover).

Market cap$244.7M14.7M shares
Revenue · quarter$0.00−100.0% YoY
Diluted EPS$-1.07—
P/E · TTM—P/S 102.7×
Net margin—
Dividend yieldNone
52-week range5.28 – 36.82−54.9% from high
Volume262.9K1.16× 20-day avg
Volatility · 60d96.1%Annualised
Short % of float14.8%9.6 days to cover
Net cash$115.0MCash $115.0M
Next earnings—Not scheduled
Split-adjusted performance
1W +19.9%1M +70.3%3M +37.1%6M +24.6%YTD +107.5%1Y −54.9%3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Pharmaceuticals

Percentile among 420 companies (100 = best)

6-month momentum84
Revenue growth4
Net margin—
Value (low P/E)—
Size52

Industry medians: 6-month return −25.5%, revenue growth +6.2%, net margin −33.8%, P/E 16.1×.

Short interest

Details →
Shares short1.7M+3.4% vs prior
Days to cover9.6Settled Oct 15
% of float14.8%
Short vol. 10d59.0%of daily volume

Closest peers by size in Pharmaceuticals

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
KRROKorro Bio$16.62+4.79%+24.6%−100.0%——$244.7M
LFCRLifecore Biomedical$6.44+0.31%+29.8%—−20.9%—$244.1MCompare
IMRXImmuneering$3.76+2.17%−27.6%———$243.5MCompare
LABStandard BioTools$0.6160+0.85%−36.4%−0.9%69.6%1.8$243.1MCompare
ABEOAbeona Therapeutics$4.22−0.71%−29.8%+2745.0%−177.4%—$241.3MCompare
GLSIGreenwich LifeSciences$16.35+2.70%−29.1%———$240.0MCompare
CAMPCAMP4 Therapeutics$3.74−2.35%−7.9%+18.8%−1884.8%—$234.7MCompare
VNDAVanda Pharmaceuticals$3.88+3.47%−47.8%+24.1%−32.3%—$234.6MCompare
SIGASIGA Technologies$3.15+1.29%−33.0%−49.5%30.4%—$226.3MCompare

Quick answers

What does Korro Bio do?
Korro Bio Inc is a biopharmaceutical company with a mission to discover, develop, and commercialize a new class of genetic medicines based on editing RNA, enabling the treatment of both rare and highly prevalent diseases. It is generating a portfolio of differentiated programs that are designed to harness the body's natural RNA editing process to effect a precise yet transient single base edit.
What is KRRO's market cap?
$244.74M, based on the Nov 4 close of $16.62.
Does Korro Bio pay a dividend?
No regular cash dividend has been paid in the last year.
How much of KRRO is sold short?
1.7M shares, 14.8% of float, as of Oct 15, 2026.
What sector is KRRO in?
Healthcare, in the Pharmaceuticals industry.

About Korro Bio

Korro Bio Inc is a biopharmaceutical company with a mission to discover, develop, and commercialize a new class of genetic medicines based on editing RNA, enabling the treatment of both rare and highly prevalent diseases. It is generating a portfolio of differentiated programs that are designed to harness the body's natural RNA editing process to effect a precise yet transient single base edit. By editing RNA instead of DNA, Korro Bio is expanding the reach of genetic medicines by delivering additional precision and tunability. The company operates and manages its business as one reportable segment and one operating segment, which is the business of discovering, developing and commercializing therapies derived from or incorporating its RNA-editing technology.

HQ: Cambridge, MA57 employeesListed Nov 6, 2023korrobio.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology