Bob Pisani is on vacation this week.
Here's how the old adage "Sell in May and go away" stacks up over the last 20 May-to-October periods
Crowded "long" trades unwinding
Very low jobless claims may be a sign that March's low employment report will be revised upward.
Small chance Fed will hike in June.
A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.
A judge previously ruled that the company violated antitrust law by barring merchants from steering consumers to lower-cost cards.
Traders are watching the iShares Nasdaq Biotechnology ETF for clues on whether a deeper market decline is on the horizon.