A profile of Apple's chip division, including interviews with its head Johny Srouji and Apple's hardware engineering chief John Ternus (Katie Tarasov/CNBC)

Katie Tarasov / CNBC:

A profile of Apple’s chip division, including interviews with its head Johny Srouji and Apple’s hardware engineering chief John Ternus  —  WATCH NOW  —  Why Apple doubled down on the expensive custom chip business, edging out Intel and starting a trend  —  Apple’s soaring stock price …