Allegro MicroSystems (ALGM) - Market capitalization

Market cap: £6.68 Billion

As of May 2026 Allegro MicroSystems has a market cap of £6.68 Billion. This makes Allegro MicroSystems the world's 2183th 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 Allegro MicroSystems from 2020 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£6.68 B	81.01%
2025	£3.69 B	13.02%
2024	£3.26 B	-28.54%
2023	£4.57 B	-3.66%
2022	£4.74 B	-6.64%
2021	£5.08 B	37.23%
2020	£3.70 B

End of Day market cap according to different sources

On May 1st, 2026 the market cap of Allegro MicroSystems was reported to be:

£6.68 Billion

by Nasdaq

£6.68 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Power Integrations POWI	£3.00 B	-55.00%	🇺🇸 USA
Photronics PLAB	£2.17 B	-67.41%	🇺🇸 USA
PDF Solutions PDFS	£1.31 B	-80.41%	🇺🇸 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 Allegro MicroSystems (ALGM)

Market cap: £6.68 Billion