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

PLXS has the lower trailing P/E: ALGM trades at 559.92 and PLXS at 40.34. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, ALGM or PLXS?

Over the past five years, ALGM grew revenue faster — ALGM at a 7.32% CAGR versus PLXS at 5.97%.

Is ALGM or PLXS more profitable?

PLXS runs the higher net margin — ALGM at 1.50% versus PLXS at 4.03%.

How have ALGM and PLXS total returns compared?

Over the past 5 years, ALGM delivered 4.64% and PLXS delivered 24.55% annualized total return. Past performance doesn't predict future results.

Allegro MicroSystems, Inc. (ALGM) vs Plexus Corp. (PLXS)

A side-by-side comparison of Allegro MicroSystems, Inc. and Plexus Corp. 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

PLXS

Plexus Corp.

$7.31B

$273.13TechnologyDelayed quote: Oct 2, 2026, 4:00 PM EDT

Total return — ALGM vs PLXS

growth of $100 · dividends reinvested · last 6y

ALGM +123.3% (+14.3%/yr)PLXS +276.4% (+24.7%/yr)PLXS compounded faster over this window

ALGM PLXS

ALGM vs PLXS: by the numbers

•ALGM is the larger company ($7.36B vs $7.31B market cap).
•PLXS trades at the lower trailing earnings multiple (40.34 vs 559.92 P/E), one valuation lens rather than an overall verdict.
•PLXS converts more revenue to profit (4.03% vs 1.50% net margin).
•ALGM grew revenue faster over the past five years (7.32% vs 5.97% CAGR).

Metrics side by side

Valuation

Metric	ALGM	PLXS
P/E ratio	559.92	40.34
Forward P/E	N/A	26.91
PEG ratio	N/A	4.12
P/S ratio	7.79	1.59
P/B ratio	7.64	4.78
EV / EBITDA	58.95	23.73
FCF yield	1.20%	0.85%

Profitability

Metric	ALGM	PLXS
Gross margin	47.20%	10.04%
Operating margin	6.22%	5.02%
Net margin	1.50%	4.03%
ROE	1.47%	12.13%
ROIC	4.61%	10.63%

Growth (annualized)

Metric	ALGM	PLXS
Revenue CAGR (5Y)	7.32%	5.97%
EPS CAGR (5Y)	N/A	9.75%
FCF CAGR (5Y)	9.70%	-21.38%
Total return CAGR (5Y)	4.64%	24.55%

Frequently asked

Which has the lower trailing P/E, ALGM or PLXS?: PLXS has the lower trailing P/E: ALGM trades at 559.92 and PLXS at 40.34. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, ALGM or PLXS?: Over the past five years, ALGM grew revenue faster — ALGM at a 7.32% CAGR versus PLXS at 5.97%.
Is ALGM or PLXS more profitable?: PLXS runs the higher net margin — ALGM at 1.50% versus PLXS at 4.03%.
How have ALGM and PLXS total returns compared?: Over the past 5 years, ALGM delivered 4.64% and PLXS delivered 24.55% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ALGM analysis Full PLXS analysis Interactive comparison tool

Dig into the metrics

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

Allegro MicroSystems & Plexus appear in these rankings

Highest 10-Year Total Return 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.