I noticed this too. My two-pronged theory is: - Many of these companies have IPO-ed recently, maybe employees with enough vested stock are just quitting - Summe

I noticed this too. My two-pronged theory is: - Many of these companies have IPO-ed recently, maybe employees with enough vested stock are just quitting - Summer vacation - it's July, a lot of people are out of the office. In the US it's the July 4th Holiday in addition.