ToplineApple stock fizzled Monday as concerns proliferated about potentially weaker than expected demand for the artificial intelligence-focused iPhone 16 ahead of its Friday debut.Apple's unveiling of the iPhone 16 last week at its Cupertino headquarters.dpa/picture alliance via Getty Images Key FactsShares fell 3% by midafternoon, wiping out roughly $96 billion in market capitalization, though Apple comfortably remains the most valuable public company in the world. Apple dropped Monday to its lowest intr ...