Spero Therapeutics (SPRO) - Market capitalization

Market cap: A$0.21 Billion

As of May 2026 Spero Therapeutics has a market cap of A$0.21 Billion. This makes Spero Therapeutics the world's 8999th 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	A$0.21 B	11.75%
2025	A$0.19 B	116.16%
2024	A$90.27 M	-21.05%
2023	A$0.11 B	-13.12%
2022	A$0.13 B	-81.6%
2021	A$0.71 B	-3.05%
2020	A$0.73 B	179.97%
2019	A$0.26 B	75.45%
2018	A$0.15 B	-30.54%
2017	A$0.21 B

End of Day market cap according to different sources

On May 21st, 2026 the market cap of Spero Therapeutics was reported to be:

A$0.21 Billion

by Nasdaq

A$0.21 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
IBM IBM	A$332.89 B	152,551.76%	🇺🇸 USA
Thomson Reuters TRI	A$52.29 B	23,880.13%	🇨🇦 Canada
Franklin Covey FC	A$0.35 B	62.26%	🇺🇸 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: A$0.21 Billion