Cook Hands Over Apple Reins to Ternus Amid AI Era Challenges

Tim Cook has handed over the reins of Apple to John Ternus, who will steer the company in its AI-driven era.

Cook's tenure as CEO saw Apple grow from a $350 billion company to over $4.5 trillion, making it one of the most consequential CEO tenures ever.

Cook prioritized supply chain efficiency and operational excellence, turning Apple's products into a recurring revenue machine by monetizing its 2.5 billion installed iPhone user base.

The wearables business under Cook brought in $35 billion in sales in fiscal 2025, while annual sales rose from $108 billion at the start of his tenure to $416 billion in the last fiscal year.