Which has grown faster, FSLR or ZS?

Over the past five years, ZS grew revenue faster — FSLR at a 12.69% CAGR versus ZS at 39.45%.

Is FSLR or ZS more profitable?

FSLR runs the higher net margin — FSLR at 30.73% versus ZS at -2.44%.

Which has been the better investment, FSLR or ZS?

Over the past 5-year, FSLR delivered the higher annualized total return — FSLR at 15.74% versus ZS at -10.16%. Past performance doesn't predict future results.

First Solar, Inc. (FSLR) vs Zscaler, Inc. (ZS)

FSLR leads on 11 of 13 compared metrics.

A side-by-side comparison of First Solar, Inc. and Zscaler, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 23, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

FSLR

First Solar, Inc.

$22.13B

$205.92TechnologyDelayed quote: Jul 23, 2026, 4:00 PM EDT

Zscaler, Inc.

$22.59B

$139.70TechnologyAt close: Jul 23, 2026, 4:00 PM ET

Total return — FSLR vs ZS

growth of $100 · dividends reinvested · last 8y

FSLR +196.4%ZS +323.3%ZS compounded faster

FSLR ZS

FSLR vs ZS: by the numbers

•ZS is the larger company ($22.59B vs $22.13B market cap).
•FSLR is profitable (30.73% net margin) while ZS runs a net loss (-2.44%).
•ZS grew revenue faster over the past five years (39.45% vs 12.69% CAGR).

Which is better, FSLR or ZS?

Metric tally: FSLR 11 · ZS 2

It depends on what you're optimizing for:

GrowthZS(faster 5Y revenue CAGR)

QualityFSLR(higher ROIC)

Metrics side by side

Valuation

Metric	FSLR	ZS
P/E ratio	13.49	—
Forward P/E	11.81●	33.93
P/S ratio	4.15●	7.08
P/B ratio	2.28●	9.49
PEG ratio	1.01	—
EV / EBITDA	8.75●	5436.76
FCF yield	7.42%●	4.28%

Profitability

Metric	FSLR	ZS
Gross margin	41.73%	76.67%●
Operating margin	33.17%●	-4.73%
Net margin	30.73%●	-2.44%
ROE	16.86%●	-3.27%
ROIC	14.42%●	-3.18%

Growth (annualized)

Metric	FSLR	ZS
Revenue CAGR (5Y)	12.69%	39.45%●
EPS CAGR (5Y)	30.54%	—
FCF CAGR (5Y)	55.54%●	49.89%
Total return CAGR (5Y)	20.14%●	-10.16%

Frequently asked

Which is better, FSLR or ZS?: It depends on your goal. growth: ZS (faster 5Y revenue CAGR); quality: FSLR (higher ROIC). Across all compared metrics, FSLR leads 11 to 2.
Which has grown faster, FSLR or ZS?: Over the past five years, ZS grew revenue faster — FSLR at a 12.69% CAGR versus ZS at 39.45%.
Is FSLR or ZS more profitable?: FSLR runs the higher net margin — FSLR at 30.73% versus ZS at -2.44%.
Which has been the better investment, FSLR or ZS?: Over the past 5-year, FSLR delivered the higher annualized total return — FSLR at 15.74% versus ZS at -10.16%. Past performance doesn't predict future results.

Go deeper

Full FSLR analysis Full ZS analysis Interactive comparison tool

Dig into the metrics

First Solar P/E ratio Zscaler P/E ratio First Solar dividend yield Zscaler dividend yield First Solar ROE Zscaler ROE First Solar operating margin Zscaler operating margin First Solar revenue growth Zscaler revenue growth First Solar free cash flow Zscaler free cash flow

First Solar & Zscaler 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 July 23, 2026.