Is COO or RMBS cheaper?

On trailing earnings, COO is cheaper: COO trades at a 55.13 P/E and RMBS at 61.95.

Which has grown faster, COO or RMBS?

Over the past five years, RMBS grew revenue faster — COO at a 9.73% CAGR versus RMBS at 23.51%.

Is COO or RMBS more profitable?

RMBS runs the higher net margin — COO at 5.57% versus RMBS at 31.89%.

Which has been the better investment, COO or RMBS?

Over the past 10-year, RMBS delivered the higher annualized total return — COO at 4.88% versus RMBS at 27.01%. Past performance doesn't predict future results.

The Cooper Companies, Inc. (COO) vs Rambus Inc. (RMBS)

RMBS leads on 9 of 15 compared metrics, though COO is the cheaper stock.

A side-by-side comparison of The Cooper Companies, Inc. and Rambus Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of June 18, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

COO

The Cooper Companies, Inc.

Total return — COO vs RMBS

growth of $100 · last 29y

COO +2441.0%RMBS +1620.3%COO compounded faster

COO RMBS

COO vs RMBS: by the numbers

•RMBS is the larger company ($14.07B vs $12.69B market cap).
•COO trades at the lower earnings multiple (55.13 vs 61.95 P/E).
•RMBS converts more revenue to profit (31.89% vs 5.57% net margin).
•RMBS grew revenue faster over the past five years (23.51% vs 9.73% CAGR).

Which is better, COO or RMBS?

Metric tally: COO 6 · RMBS 9

It depends on what you're optimizing for:

ValueCOO(lower P/E)

GrowthRMBS(faster 5Y revenue CAGR)

QualityRMBS(higher ROIC)

Metrics side by side

Valuation

Metric	COO	RMBS
P/E ratio	55.13●	61.95
Forward P/E	14.06●	43.80
P/S ratio	3.00●	19.79
P/B ratio	1.54●	10.25
PEG ratio	—	1.53
EV / EBITDA	17.33●	44.53
FCF yield	4.49%●	2.35%

Profitability

Metric	COO	RMBS
Gross margin	64.37%	77.03%●
Operating margin	11.77%	35.89%●
Net margin	5.57%	31.89%●
ROE	2.86%	16.51%●
ROIC	3.98%	15.03%●

Growth (annualized)

Metric	COO	RMBS
Revenue CAGR (5Y)	9.73%	23.51%●
EPS CAGR (5Y)	-17.30%	48.76%●
FCF CAGR (5Y)	6.61%	16.48%●
Total return CAGR (5Y)	-7.38%	42.37%●

Frequently asked

Which is better, COO or RMBS?: It depends on your goal. value: COO (lower P/E); growth: RMBS (faster 5Y revenue CAGR); quality: RMBS (higher ROIC). Across all compared metrics, RMBS leads 9 to 6.
Is COO or RMBS cheaper?: On trailing earnings, COO is cheaper: COO trades at a 55.13 P/E and RMBS at 61.95.
Which has grown faster, COO or RMBS?: Over the past five years, RMBS grew revenue faster — COO at a 9.73% CAGR versus RMBS at 23.51%.
Is COO or RMBS more profitable?: RMBS runs the higher net margin — COO at 5.57% versus RMBS at 31.89%.
Which has been the better investment, COO or RMBS?: Over the past 10-year, RMBS delivered the higher annualized total return — COO at 4.88% versus RMBS at 27.01%. Past performance doesn't predict future results.

Go deeper

Full COO analysis Full RMBS analysis Interactive comparison tool

Dig into the metrics

Cooper Companies P/E ratio Rambus P/E ratio Cooper Companies dividend yield Rambus dividend yield Cooper Companies ROE Rambus ROE Cooper Companies operating margin Rambus operating margin Cooper Companies revenue growth Rambus revenue growth Cooper Companies free cash flow Rambus free cash flow

Cooper Companies & Rambus appear in these rankings

Fastest Revenue Growth Stocks Highest Operating Margin Stocks Highest FCF Yield Stocks Best 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 June 18, 2026.