After-Hours Action: What's Going On With Guardant Health, Exact Sciences Shares?

Guardant Health Inc GH and Exact Sciences Corp EXAS shares are moving in different directions in Thursday's after-hours session. Here's a look at what's going on.

What To Know: Guardant Health shares are plunging after the company announced results from its ECLIPSE study evaluating the performance of its blood test for detecting colorectal cancer. 

The test demonstrated 83% sensitivity in detecting individuals with colorectal cancer. Specificity was 90% in both individuals without advanced neoplasia and in those who had a negative colonoscopy result.

Exact Sciences owns Cologuard, a stool-based cancer test that would directly compete with Guardant Health's blood test. Cologuard is FDA approved and identifies 92% of colorectal cancers, according to data from the company. 

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GH, EXAS Price Action: Guardant Health shares are down 40.6% in after hours at $24.50, while Exact Sciences shares are up 25.8% at $56.10, according to Benzinga Pro.

Photo: fernando zhiminaicela from Pixabay.