Currently VRAY is close to its 52 week low price. There has been large buying activity from the insiders, CEO, CSO (chief scientific officer)as well as institutions. This can be seen here
Their net revenue has almost doubled every year from 2015 to 2018 and the EPS ( per share) is increasing steadily. The health industry is an ever growing industry and Viewray provides cutting edge MRI technology.
The are coming up on November 13. Expecting the price to go up in the coming months.
*Note: This is not financial advise. Please do your own research.