SuperworthX4 Pharmaceuticals market cap XFOR
Share price times shares outstanding: what the whole company sells for, since 2018.
- Today, Oct 23, 2026
- $321.2M
- Highest close in our data
- $460M
- Aug 2026
X4 Pharmaceuticals is worth $321.2M at the close on Oct 23, 2026, at $3.24 a share.
That is up 641% over the last year and up 167% over five years.
Its highest close in our data was $460M in Aug 2026.
Market cap over time
Year by year
| Year | End of year | Low | High | Change |
|---|---|---|---|---|
| 2026 so far | $321.2M | $256.8M | $460M | −18% |
| 2025 | $393.5M | $8.3M | $393.5M | +187% |
| 2024 | $137.1M | $57.6M | $245.2M | −2% |
| 2023 | $140.3M | $58.2M | $275M | +104% |
| 2022 | $68.8M | $32.1M | $151M | +22% |
| 2021 | $56.6M | $56.6M | $224.7M | −46% |
| 2020 | $104.7M | $90.1M | $161M | −23% |
| 2019 | $135.3M | $30.7M | $231.5M | +297% |
| 2018 | $34.1M | $17.8M | $305.6M | n/a |
Against its peers
Companies in Biotechnology nearest X4 Pharmaceuticals' size, closest first, today.
| Company | Market cap |
|---|---|
| XFORX4 Pharmaceuticals | $321.2M |
| PLXProtalix BioTherapeutics | $205.5M |
| MGTXMeiraGTx | $884.6M |
| 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 X4 Pharmaceuticals
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.