Did Federal Reserve Governor Lisa Cook and Chicago Fed President Austan Goolsbee compare notes ahead of their remarks today? Earlier today, Cook singled out "stocks" when talking about valuations. Now, her colleague at the central bank is warning that AI investment 'raises concerns' about a bubble. Of course, this is likely obvious to most traders -- who seem to have been shaken from complacency in the last few weeks, evidenced in part by the moves in the market.Coming up after the market close, we'll have ...