The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • Keysight Technologies is the larger company, worth $62.5B, close to Coherent's $54.4B.
  • Keysight Technologies grew revenue faster over the last year (+36.5% vs +33.7%).
  • Keysight Technologies keeps more of each dollar of revenue as operating profit (20.2% vs 11.9%).
  • On earnings, Keysight Technologies is the cheaper stock (58.9x vs 132.4x).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureCOHRKEYS
Market cap$54.4B$62.5B
Share price$312.62$382.75
Revenue (last fiscal year)$7.1B$5.4B
Free cash flow (last fiscal year)-$1.0B$1.3B
Revenue growth, last year+33.7%+36.5%
Revenue growth per year, last 5 fiscal years+21.0%+2.1%
Operating margin11.9%20.2%
Net margin11.3%19.1%
Return on equity7.4%19.2%
P/E (trailing)132.4x58.9x
Price / free cash flow282.1x48.8x
EV / EBITDA43.8x32.9x
FCF growth the price implies—16.7%
Dividend yield——
Debt / equity0.65x0.81x
Fundamental gradeCB
Superinvestors holding it79
Insider purchases, last 12 months64

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

Coherent

YearRevenueFree cash flowOp. margin
2022$3.3B$99M12.5%
2023$5.2B$198M-0.72%
2024$4.7B$199M2.0%
2025$5.8B$193M1.6%
2026$7.1B-$1.0B11.9%

Keysight Technologies

YearRevenueFree cash flowOp. margin
2021$4.9B$1.1B21.9%
2022$5.4B$959M24.6%
2023$5.5B$1.2B24.9%
2024$5.0B$898M16.7%
2025$5.4B$1.3B16.3%

Where the revenue comes from

Coherent · by segments, 2026

Datacenter & Communications$5.3B74%
Industrial$1.8B26%

Keysight Technologies · by segments, 2025

CSG$3.7B69%
EISG$1.6B31%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open COHR in Investingly

Questions

Which is bigger, Coherent or Keysight Technologies?

Keysight Technologies (KEYS), at $62.5B against $54.4B.

Is COHR or KEYS cheaper?

By trailing P/E, Keysight Technologies (58.9x) is cheaper than Coherent (132.4x). A lower multiple can also mean the market expects less growth.

Which grows faster, COHR or KEYS?

Keysight Technologies: revenue grew +36.5% over the last year, against +33.7%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.