IBM shares soared Thursday after the computing giant posted better-than-expected fourth-quarter earnings, boosted by the strength of its AI business. Monitor these key price levels.

Investors rallied behind International Business Machines’ artificial-intelligence strategy, driving the stock up after the company released its latest quarterly earnings Wednesday. The tech company said it has taken an open-innovation approach to artificial intelligence,

IBM stock has risen by 22 percent over the past year, with shares rising by nine percent on the morning following the earnings announcement.