What is ALGM's five-year median P/E?

46.9x. Half of ALGM's weekly readings over the last five years were higher and half were lower. This page has 274 weekly readings, from Jul 26, 2021 to Oct 19, 2026.

Does a low historical rank mean a stock is a buy?

No. The rank compares ALGM only with its own past. Slower growth or more risk can justify a lower multiple than before. P/E uses earnings and P/S uses revenue from the last twelve months.

Allegro MicroSystems Inc (ALGM) P/E ratio history

Information Technology

$31.48

Latest weekly close · Market cap $5.9B

Historically high

As of Oct 24, 2026

ALGM's P/E of 524.7x is higher than 93% of its weekly readings over the last five years.

Weekly P/E with its 5-year range

P/E each weekMiddle half of the last 5 years5-year median 46.9×

5-year median: 46.9×
10-year median: 45.3×
5-year low to high: 19.9×–739.8×
Versus 5-year median: +1,020%

P/E

93rdpercentile

of its weekly readings over the last five years

Historically high

Growth, last 12 months vs the year before

Revenue: +24%accelerating
EPS: n/a

Price vs revenue and EPS, indexed to 100

Each line starts at 100 at its first positive reading over the last five years. Revenue and EPS change at fiscal quarter ends.

PriceRevenue, last 12 monthsEPS, last 12 months100 = first reading

P/E at each year-end

The last weekly reading of each year, and its percentile against the five years before it.

ALGM P/E at each year-end
Year-end	P/E	5-year percentile
Dec 29, 2025	n/a	Too little history
Dec 30, 2024	n/a	Too little history
Dec 25, 2023	23.3×	6
Dec 26, 2022	49.2×	62
Dec 27, 2021	113.1×	Too little history

Information Technology peers on P/E

Each percentile compares a stock with its own last five years.

Compare ALGM with peers

Information Technology peers of ALGM on P/E
Stock	P/E	Versus its own history	5-year percentile
ADIAnalog Devices	45.8×	Within its usual range	40
AMDAdvanced Micro Devices	130.6×	Within its usual range	62
ARMArm Holdings	214.4×	Within its usual range	44
AVGOBroadcom	41.2×	Within its usual range	44
CRDOCredo Technology Group Holding Ltd	52.2×	Historically low	1

Appears in

Sector: Information Technology
Themes: AI Cyber Defense AI Infrastructure AI Memory Defense Tech US Manufacturing Stocks
Screens: Stocks with Low P/E Ratios and Steady Revenue Growth
Stocks Below Their 5-Year Median P/E
Stocks Near Their Lowest P/E Ratios in 5 Years

Screen Information Technology stocks the same way

Research on ALGM

No articles about ALGM yet. How valuation percentiles work

Loading peers and related research…

About this history

What is ALGM's current P/E?: ALGM's P/E of 524.7x is higher than 93% of its weekly readings over the last five years.
What is ALGM's five-year median P/E?: 46.9x. Half of ALGM's weekly readings over the last five years were higher and half were lower. This page has 274 weekly readings, from Jul 26, 2021 to Oct 19, 2026.
Does a low historical rank mean a stock is a buy?: No. The rank compares ALGM only with its own past. Slower growth or more risk can justify a lower multiple than before. P/E uses earnings and P/S uses revenue from the last twelve months.