William Blair analyst Bhavan Suri believes Attunity reported "solid" Q4 results despite the corresponding share selloff. However, the shares traded off 13% on Friday in response to an analyst downgrade and investor confusion about how to measure the fundamental growth rate of the business caused by the company's adoption of the new revenue recognition standard, ASC 606, in 2018, Suri tells investors in a post-earnings research note. Attunity's growth rate on an ASC 606 basis is a much better proxy than ASC 605 for the underlying growth rate of the business, says Suri. He keeps an Outperform rating on the shares.