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REGENXBIO market cap RGNX

Share price times shares outstanding: what the whole company sells for, since 2015.

Today, Oct 23, 2026
$441M
Highest close in our data
$2.6B
Sep 2018

REGENXBIO is worth $441M at the close on Oct 23, 2026, at $6.68 a share.

That is down 33% over the last year and down 71% over five years.

Its highest close in our data was $2.6B in Sep 2018.

Market cap over time

Open the interactive chart, with overlays and comparisons

Year by year

YearEnd of yearLowHighChange
2026 so far$441M$295.7M$738.6M−38%
2025$716.8M$295M$738.6M+95%
2024$367.1M$367.1M$1B−54%
2023$789.7M$632.1M$1.1B−20%
2022$981.9M$866.1M$1.5B−30%
2021$1.4B$1.3B$1.9B−18%
2020$1.7B$990.1M$2B+14%
2019$1.5B$1.2B$2.2B+0%
2018$1.5B$772.4M$2.6B+44%
2017$1B$449.4M$1B+111%
2016$491.1M$208.1M$616.9M+12%
2015$436.8M$436.8M$652Mn/a

Against its peers

Companies in Biotechnology nearest REGENXBIO's size, closest first, today.

CompanyMarket cap
RGNXREGENXBIO$441M
MGTXMeiraGTx$884.6M
PLXProtalix BioTherapeutics$205.5M
VCELVericel$2.2B
ADMAAdma Biologics$2.4B
Peer median$1.5B

What the market cap tells you

Share price times shares outstanding: what the whole company sells for today.

Size, not quality. Large caps move slower and are covered more. That is all it tells you.

More on REGENXBIO

Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.