Illuminavs.Thermo Fisher Scientific
ILMN vs TMO · both in Life science tools, part of the Medicine, pharma & life science value chain: Instruments, reagents and equipment for research, development and production.
Thermo Fisher Scientific is about 6.8× larger than Illumina by market cap; Thermo Fisher Scientific trades at the lower P/E (28.6 vs 33.7); year to date, Illumina leads (+45.0% vs −9.0%).
Side by side
| ILMN | TMO | |
|---|---|---|
| Market cap | $28.8B | $196B |
| Price | $190.20 | $527.05 |
| Today | −1.8% | +0.4% |
| Return YTD | +45.0% | −9.0% |
| Return 1Y | +90.1% | +22.4% |
| P/E | 33.7 | 28.6 |
| P/S | 6.6 | 4.3 |
| P/B | 10.8 | 3.8 |
Data as of 2026-07-11 · updates daily after U.S. close
The two companies
IlluminaILMN
American leader in DNA sequencing — instruments and consumables used in research and clinical genomics.
Full ILMN profile →Thermo Fisher ScientificTMO
American world leader in life science tools — instruments, reagents, consumables and contract manufacturing (Patheon) for research and pharma.
Full TMO profile →More comparisons in Life science tools
See where ILMN and TMO sit in the full Medicine, pharma & life science map — every segment from suppliers to end markets.Open the Life science value chain →