Nate Silver tweets:
"AAPL has lost $18 billion in market capitalization since the Jobs news broke, about the same as the GDP of Paraguay."
But Henry Blodget minimizes the after-hours stock slide:
"A 5% drop in Apple is barely worth noting. If this had happened 2 years ago--25%. This was already in stock."
In case you're wondering, Apple stock closed today (before the news) at $376.18. On Sept. 16, 1997, when Steve Jobs took control of the company, shares were priced at an adjusted $5.48.