Apple shares have delivered exceptional returns under Tim Cook, rising over 2,700% on a total-return basis. With John Ternus set to become CEO, investors are assessing whether Apple can sustain its performance. Analysts note that Ternus inherits a mature business and will need to chart his own path for future growth.

John Ternus takes over as Apple CEO on September 1, succeeding Tim Cook. He's already restructuring Apple's design team and shifting management

John Ternus, taking over as Apple's chief executive on September 1, is anticipated to revamp the company's senior leadership across key departments in the coming years.

Apple CEO Tim Cook has handed over the reins to John Ternus after a 15-year tenure that transformed Apple into a $4.6 trillion company. The stock has surged 2,275% since Cook…