A roundup of tech ratings changes

|By:, SA News Editor

BlackBerry (BBRY +3.5%) has been upgraded to Hold by Deutsche and SocGen, and cut to Underperform by CIBC, in the wake of yesterday's events.

NQ Mobile's (NQ -12.6%) rating has been suspended by Piper as the Muddy Waters debate continues to boil. SA contributor Goldbaum Research has provided another bearish column this morning.

SunEdison (SUNE +4.9%) has been upgraded to Overweight by Piper ahead of tomorrow's Q3 report.

Rovi (ROVI -3.3%) has been cut to Sell by Goldman a week after missing Q3 estimates and cutting full-year guidance.

TTM Technologies (TTMI +10.6%) has been upgraded to Overweight by JPMorgan a few days after tumbling due to a Q3 miss, soft guidance, and a CEO change.