How Illumina's Q1 Results Delighted Investors

Investors already pretty much knew what to expect on the top line in Illumina's (NASDAQ:ILMN) first-quarter results. The genomic sequencing systems leader provided a sneak peek at its Q1 revenue a few weeks ago.

However, Illumina still managed to deliver an upside surprise on its bottom line when the company announced its Q1 results after the market closed on Tuesday. The life sciences stock rose 1% in after-hours trading. Here are the highlights from Illumina's Q1 update.