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 7.8× larger than Illumina by market cap; year to date, Illumina leads (+70.2% vs +8.5%).
Side by side
| ILMN | TMO | |
|---|---|---|
| Market cap | $28.7B | $223B |
| Price | $224.99 | $628.15 |
| Today | +0.8% | −0.1% |
| Return YTD | +70.2% | +8.5% |
| Return 1Y | +119.3% | +25.8% |
| P/E | 34.7 | 31.9 |
| P/S | 6.4 | 4.8 |
| P/B | 10.1 | 4.2 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
IlluminaILMN
DNA sequencing machines and the reagents they consume, for research and clinical genomics.
Full ILMN profile →Thermo Fisher ScientificTMO
Analytical instruments on one side, the reagents and consumables that feed them on the other, sold to research laboratories and pharmaceutical companies. Patheon, its contract manufacturing arm, makes drugs for customers outright.
Full TMO profile →More ILMN & TMO comparisons
Other head-to-heads in the Life science tools segment.
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 →