Summary
I have been expecting the iPhone to see declining year-on-year sales by Q2 FY2016, leading to Apple's stock underperforming.
AAPL's guidance for Q2 FY2016 confirms this will take place, thus validating my previous thesis. The stock has underperformed as expected.
Since the stock has already shown significant underperformance, this article looks into the recent developments and updates my opinion as needed.
On November 30, 2015, I published Several iPhone Risks In Review: Apple (NASDAQ:AAPL) Is About To Show Declining iPhone Shipments. In it, I made two predictions:
That the iPhone would soon post year-on-year declines.
That Apple would thus underperform at least until July-August 2016.
http://seekingalpha.com/article/3838286-apple-serious-problems

Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.