Which has the lower trailing P/E, ALGM or QLYS?

QLYS has the lower trailing P/E: ALGM trades at 559.92 and QLYS at 33.39. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, ALGM or QLYS?

Over the past five years, QLYS grew revenue faster — ALGM at a 7.32% CAGR versus QLYS at 12.87%.

Is ALGM or QLYS more profitable?

QLYS runs the higher net margin — ALGM at 1.50% versus QLYS at 29.34%.

How have ALGM and QLYS total returns compared?

Over the past 5 years, ALGM delivered 4.64% and QLYS delivered 11.62% annualized total return. Past performance doesn't predict future results.

Allegro MicroSystems, Inc. (ALGM) vs Qualys, Inc. (QLYS)

A side-by-side comparison of Allegro MicroSystems, Inc. and Qualys, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 3, 2026. Differences are shown without an overall score or investment verdict.

ALGM

Allegro MicroSystems, Inc.

$7.36B

$39.53TechnologyDelayed quote: Oct 2, 2026, 4:00 PM EDT

QLYS

Qualys, Inc.

$6.80B

$193.00TechnologyDelayed quote: Oct 2, 2026, 4:00 PM EDT

Total return — ALGM vs QLYS

growth of $100 · dividends reinvested · last 6y

ALGM +123.3% (+14.3%/yr)QLYS +101.0% (+12.3%/yr)ALGM compounded faster over this window

ALGM QLYS

ALGM vs QLYS: by the numbers

•ALGM is the larger company ($7.36B vs $6.80B market cap).
•QLYS trades at the lower trailing earnings multiple (33.39 vs 559.92 P/E), one valuation lens rather than an overall verdict.
•QLYS converts more revenue to profit (29.34% vs 1.50% net margin).
•QLYS grew revenue faster over the past five years (12.87% vs 7.32% CAGR).

Metrics side by side

Valuation

Metric	ALGM	QLYS
P/E ratio	559.92	33.39
Forward P/E	N/A	24.64
PEG ratio	N/A	1.72
P/S ratio	7.79	9.65
P/B ratio	7.64	12.09
EV / EBITDA	58.95	25.78
FCF yield	1.20%	4.62%

Profitability

Metric	ALGM	QLYS
Gross margin	47.20%	83.45%
Operating margin	6.22%	34.61%
Net margin	1.50%	29.34%
ROE	1.47%	36.74%
ROIC	4.61%	30.65%

Growth (annualized)

Metric	ALGM	QLYS
Revenue CAGR (5Y)	7.32%	12.87%
EPS CAGR (5Y)	N/A	18.60%
FCF CAGR (5Y)	9.70%	12.05%
Total return CAGR (5Y)	4.64%	11.62%

Frequently asked

Which has the lower trailing P/E, ALGM or QLYS?: QLYS has the lower trailing P/E: ALGM trades at 559.92 and QLYS at 33.39. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, ALGM or QLYS?: Over the past five years, QLYS grew revenue faster — ALGM at a 7.32% CAGR versus QLYS at 12.87%.
Is ALGM or QLYS more profitable?: QLYS runs the higher net margin — ALGM at 1.50% versus QLYS at 29.34%.
How have ALGM and QLYS total returns compared?: Over the past 5 years, ALGM delivered 4.64% and QLYS delivered 11.62% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ALGM analysis Full QLYS analysis Interactive comparison tool

Dig into the metrics

Allegro MicroSystems P/E ratio Qualys P/E ratio Allegro MicroSystems ROE Qualys ROE Allegro MicroSystems operating margin Qualys operating margin Allegro MicroSystems revenue growth Qualys revenue growth Allegro MicroSystems free cash flow Qualys free cash flow

Allegro MicroSystems & Qualys appear in these rankings

Highest ROE Stocks Highest ROIC Stocks Highest Operating Margin Stocks Highest FCF Yield Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified October 3, 2026.