Allegro Microsystems PE ratio ALGM

Share price divided by earnings per share over the last twelve months, since 2021.

Today, Oct 23, 2026: n/m; a sliver of earnings
Last meaningful: 60.6×; Oct 2024
5-year median: 41.5×
5-year range: 16.5× to 113×
Peer median: 32.9×

Allegro Microsystems' PE ratio is not a meaningful number today, on $0.06 of earnings a share over the last twelve months: a multiple this high rests on a sliver of earnings.

It was last meaningful in Oct 2024, at 60.6×.

On the days it had one over the last 5 years, its median was 41.5×, from 16.5× in May 2021 to 113× in Dec 2021.

PE ratio over time

Open the interactive chart, with overlays and comparisons

Year by year

Year	End of year	Low	High
2024	60.6×	20.2×	65.8×
2023	23.3×	19.9×	62.3×
2022	49.2×	32.7×	101×
2021	113×	16.5×	113×

Against its peers

Companies in Semiconductors nearest Allegro Microsystems' size, closest first, today.

Company	PE ratio
ALGMAllegro Microsystems	n/m
CRUSCirrus Logic	13.7×
FORMFormfactor	67.5×
ENPHEnphase Energy	31.9×
KLICKulicke & Soffa Industries	34.0×
DIODDiodes	43.8×
RMBSRambus	39.3×
AMKRAmkor Technology	17.6×
ACMRACM Research	24.0×
ACLSAxcelis Technologies	35.8×
PENGPenguin Solutions	22.0×
Peer median	32.9×

What the PE ratio tells you

Share price divided by earnings per share over the last twelve months. It is the price tag on a dollar of profit: 20× means you pay $20 for $1 of yearly earnings.

Blank while earnings are negative. A very low PE can mean the market expects profits to fall, so read it with growth and the company's own history.

More on Allegro Microsystems

Valuation data, not investment advice. Prices as of Oct 23, 2026. Reported figures come from the company's filings with the SEC.