Allegro MicroSystems (ALGM) - Market capitalization

Market cap: £8.22 Billion

As of June 2026 Allegro MicroSystems has a market cap of £8.22 Billion. This makes Allegro MicroSystems the world's 1919th 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	£8.22 B	122.59%
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 Jun 17th, 2026 the market cap of Allegro MicroSystems was reported to be:

£7.59 Billion

by Nasdaq

£7.59 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Power Integrations POWI	£3.67 B	-55.32%	🇺🇸 USA
Photronics PLAB	£1.47 B	-82.07%	🇺🇸 USA
PDF Solutions PDFS	£2.06 B	-74.91%	🇺🇸 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: £8.22 Billion