Tim Cook leaves Apple’s top job celebrated for turning it into an unrivalled financial machine, while John Ternus inherits a harder question: whether that scale can translate into the next era of computing. Cook sees continuity in the transition; analysts see an urgent test of innovation.

Cook took over in August 2011, when Apple shares traded at $13.35 and its market value stood at $347 billion. By Monday, the stock had closed at $316.61, a 2,272% gain, while Apple’s market capitalization had reached $4.7 trillion. His defining move was to turn a company tied to hardware cycles into a recurring-revenue powerhouse: Apple now has more than 1.5 billion paid subscriptions, with services generating $30.7 billion in the latest quarter.¹

That record is not without caveats. Apple’s car project was ultimately killed, Vision Pro has not found a mass audience, and its first push into Apple Intelligence suffered delays. The revamped Siri is only now arriving with iOS 27, after Apple leaned on Google models — a dependence that makes Cook’s AI strategy both cost-conscious and vulnerable.²

On his final day as CEO, Cook told staff that Apple’s success came from its collective culture: “Whatever there is to say about my success, I know it is all because of you.” He said he was “completely at peace” with stepping away from the role and praised Ternus as “brilliant and wonderful and capable.”³ Outside Apple, Perplexity chief Aravind Srinivas saluted Cook for operating at immense scale “without letting the bar for excellence slip.”Aravind Srinivas (AravSrinivas)⁴

Ternus formally took the helm Tuesday, with Cook remaining executive chair. The new CEO must manage leadership turnover and talent departures while preserving Cook-era discipline. Yet the nearer deadline is product ambition: Apple is expected to unveil a foldable iPhone and deepen its AI push. Former Apple marketer Michael Gartenberg framed the assignment bluntly: Ternus must “bring Apple back to being a cool brand” and show it can still innovate.⁵