Illumina (ILMN) stock, explained like you're 5

Is Illumina a small, medium or large cap company?

Yes. Illumina is a large cap stock. Its market cap, which is the total value of all its shares, is about 42 billion dollars.

Here is how you can tell. Multiply the share price by the number of shares to get the market cap, then compare it to the usual sizes. Micro cap is under 300 million dollars, small cap is 300 million to 2 billion, mid cap is 2 to 10 billion, large cap is 10 billion and up, and mega cap is over 200 billion. Market caps move every day with the share price, so treat the number as a recent snapshot.

How Illumina makes money

• Selling medicines, medical devices or healthcare services.
• Insurance premiums or hospital and clinic fees.
• Research and licensing deals.

What moves ILMN stock

• Results from clinical trials and approvals from regulators.
• Drug prices, insurance rules and government policy.
• Patents running out and new competing treatments.

In the news lately

• What Has Actually Changed At Illumina After A 175% Jump (Simply Wall Street)
• Illumina (ILMN) Stock May Be About Fair Value After Genomics AI Launch (Yahoo Finance)
• $100 Invested In Illumina 15 Years Ago Would Be Worth This Much Today (Benzinga)
• BE, P, ILMN Join S&P 500; LNG Misses Out Bloom Energy Stock Gains While Cheniere Energy Slips (Stocktwits)
• ILMN Nov 2026 370.000 put (ILMN261120P00370000) Interactive Stock Chart (Yahoo! Finance Canada)

Key terms to know before you follow ILMN

• Market cap
• P/E ratio
• EPS (earnings per share)
• Earnings report
• Volatility