Apple’s surprisingly bad day: What’s spooking its investors?

There are a variety of factors that have caused the stock to dip and rise since September, but Wednesday was particularly odd because there wasn’t any obvious thing that should be spooking Wall Street. Here are some financial analysts’ best guesses as to what’s afoot.

The Apple Roundup: Apple’s stock hits a new, historic milestone

Here’s our daily pick of stories about Apple from around the web you shouldn’t miss. Today’s installment: Apple’s market capitalization is now the highest of any company ever, Apple responds to SMS security report, how the iPad is outgrowing the iPhone, and Apple’s moves in Russia.

Apple shares hit $500 and keep going

Apple stock hit an all-time high of $503.83 in early trading Monday, surpassing the magic $500 mark. It has since gone back down a bit, and at the time of publishing, AAPL was at $499.22. The stock has gone steadily upward since Tim Cook became CEO.