Spero Therapeutics (SPRO) - Market capitalization

Market cap: $0.12 Billion USD

As of February 2026 Spero Therapeutics has a market cap of $0.12 Billion USD. This makes Spero Therapeutics the world's 9034th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Spero Therapeutics from 2017 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	$0.12 B	-3.45%
2025	$0.13 B	132.77%
2024	$56.15 M	-27.92%
2023	$77.9 M	-13.02%
2022	$89.57 M	-82.73%
2021	$0.51 B	-8.59%
2020	$0.56 B	207.48%
2019	$0.18 B	74.38%
2018	$0.10 B	-37.33%
2017	$0.16 B

End of Day market cap according to different sources

On Feb 23rd, 2026 the market cap of Spero Therapeutics was reported to be:

$0.12 Billion USD

by Nasdaq

$0.12 Billion USD

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
IBM IBM	$208.77 B	165,330.33%	🇺🇸 USA
Thomson Reuters TRI	$35.98 B	28,412.44%	🇨🇦 Canada
Franklin Covey FC	$0.16 B	30.45%	🇺🇸 USA

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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Market capitalization of Spero Therapeutics (SPRO)

Market cap: $0.12 Billion USD