Invitae

The San Francisco-based medical genetics firm generated $53.5 million in revenues in the second quarter, beating analysts' consensus estimate of $50.7 million.

Of the 27 companies in the index, 12 firms' share prices retreated last month, 14 companies' stocks increased, and one firm's share value was flat.

Other big gainers last month included Accelerate Diagnostics and Natera, and share prices of 23 of the 27 companies in the index increased month over month.

The acquisition will bring to Invitae single-molecule, cell-free DNA analysis technology and enable lower cost NIPS testing.

The testing programs are financially supported by the drugmakers, and will allow Invitae to provide free testing and genetic counseling for rare inherited retinal disease and primary immunodeficiencies.

The broader market drove down the stock prices of many diagnostics companies. Natera, Guardant Health, and CareDx paced the gainers.

Invitae will perform genetic testing using a 58-gene panel and Horizon will provide financial support for the program aimed at improving diagnosis of the rare condition.