Upstream Bio (UPB)

P/B ratio as of December 2025 : 4.03

According to Upstream Bio's latest financial reports the company has a price-to-book ratio of 545.213.
The price-to-book ratio is a way to measure how much the stock market thinks a company is worth compared to how much the company says its assets are worth on paper.

Upstream Bio - P/B ratio (from 2024 to 2025)

P/B ratio by year

Year	P/B ratio	Change
2025-12-31	N/A	-100%
2024-12-31	2.19
2023-12-31	N/A

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Upstream Bio (UPB) - P/B ratio