Shares of Intel closed 14% higher on Thursday, as Wall Street cheered its decision to name former board member Lip-Bu Tan as CEO, who left in August over differences about the chipmaker's direction, after several years of market underperformance.

Together, we will work hard to restore Intel’s position as a world-class products company, establish ourselves as a world-class foundry and delight our customers like never before,” Tan said in a letter to Intel employees on Wednesday.

Intel has a new boss. The new chief executive officer is Lip-Bu Tan, a former Intel board of directors member and chip software maker Cadence Design Systems. He’s promising to “double down” on things that are working and “take calculated risks” where things aren’t working nearly as well.