Premarket trading in AAPL. Source: thinkorswim

FORTUNE — After hitting a nine-month low shortly before noon on Friday, Apple AAPL shares bounced nearly $22 and closed in positive territory for the first time in a week. Judging from pre-market trading Monday, the stock was getting set to continue its recovery, along with the rest of the market. (S&P futures were up sharply as well.)

UPDATE: Apple opened at $540.62 and by 10 a.m. had hit $550, up more than $22 (4.2%) from Friday’s close.