“The $16.49 Apple (AAPL) rose Thursday was only its sixth largest one-day dollar gain, according to AAPLInvestors, and in percentage terms, 3.46% doesn’t even make the top 10,” Philip Elmer-DeWitt reports for Fortune.

“But when the world’s most valuable company rallies a few points, its market capitalization gets a whole lot bigger,” P.E.D. reports. “According to the Bespoke Investment Group, Apple’s one-day gain Thursday — $15.4 billion — was larger than the market cap of half the companies in the S&P 500.”

P.E.D. asks, “Why Thursday?”

Read more in the full article here.

[Thanks to MacDailyNews Reader "Dan K." for the heads up.]