Tech ratings changes: Sina, Informatica, 21Vianet, Marketo

|About: Sina Corporation (SINA)|By:, SA News Editor

Sina (SINA -4.2%) has been cut to Hold by Maxim a day after taking off in response to Weibo's IPO filing.

Informatica (INFA +2%) has been upgraded to Buy by CLSA.

21Vianet (VNET +8%) has been upgraded to Outperform by Credit Suisse.

Marketo (MKTO +2.4%) has been upgraded to Neutral by UBS. The company is widely viewed as a buyout candidate following the acquisition of peers.

Alliance Fiber (AFOP +8.3%) has been upgraded to Buy by B. Riley.

Shutterfly (SFLY -5.9%) has been cut to Underperform by Cowen.