TTM Technologies is trading 19.9% down at $80.50 after its Q4 revenue outlook came in slightly below analyst expectations. - In its October 22 earnings report, the company beat Q3 revenue and adjusted EPS expectations; Q4 revenue guidance was $1.42–$1.44 billion, versus $1.44 billion analyst consensus. - Broader technology-sector weakness and a market selloff may also be weighing on shares. - Shares sharply reversed after the prior session’s 6.95% gain; no reliable live volume figure was available.