The regular session was down for the owner of Taco Bell, Pizza Hut, and KFC. But Yum said quarterly net income rose 23 percent due to a turnaround in its China division and higher US sales, and the stock rose in after-hours trading. It was up 4.2 percent at 6:45 p.m. Yum also raised its guidance for the year. It reported net income of $471 million, up from $383 million a year before.