The first part of Tim Cook's answer was exactly what Wall Street wanted to hear. The second part, not so much.
Despite record revenue and iOS sales reported in today's earnings report, Apple's stock has sunk a staggering 10 percent in after-hours trading.
Fueled by concerns that iPhone 5 demand has weakened, investors are abandoning Apple, sending the company's stock under the $500-per-share mark.
Apple may be the most valuable company in the world, but it's clearly not invincible.