ILMN vs TMO
Illumina (ILMN) and Thermo Fisher Scientific (TMO) compared side by side. Thermo Fisher Scientific (TMO) is larger, with a market cap of $249.1B versus $40.7B for Illumina, about 6.1 times the size. On trailing earnings, TMO is cheaper at 35.5x versus 50.3x for ILMN.
Head to head
| Metric | ILMN | TMO |
|---|---|---|
| Market cap | $40.7B | $249.1B |
| P/E (TTM) | 50.3x | 35.5x |
| Forward P/E | 44.0x | 24.3x |
| Revenue (TTM) | $4.5B | $47.4B |
| Revenue growth | 9.4% | 9.1% |
| Gross margin | 67.9% | 41.2% |
| Operating margin | 21.1% | 20.2% |
| Free cash flow | $967.0M | $7.3B |
| Dividend yield | None | 0.28% |
| 1-year return | +169.5% | +18.2% |
| 5-year return (annual) | -7.5% | +2.2% |
| Max drawdown | -96% | -71% |
| FI Handbook grade | C+ | C+ |
Highlighted: the stronger figure on metrics where higher or lower is clearly better.
Growth of $10,000 (5 years, price only)
ILMN vs TMO FAQ
Which is bigger, ILMN or TMO?
Thermo Fisher Scientific (TMO) is larger, with a market cap of $249.1B versus $40.7B for Illumina, about 6.1 times the size.
Is ILMN or TMO cheaper?
On trailing earnings, TMO is cheaper at 35.5x versus 50.3x for ILMN. A lower P/E can reflect slower expected growth, so compare growth and margins too.
Which stock performed better over the past year, ILMN or TMO?
ILMN returned +169.5% over the past year including dividends, versus +18.2% for TMO, through October 23, 2026.
Which pays a higher dividend, ILMN or TMO?
TMO yields 0.28%; ILMN does not pay a dividend.
Full pages: Illumina · Thermo Fisher Scientific