What Can Stop This Party?

There's a pretty strong argument to be made that once vol. spikes sustainably, the biggest risk to markets is what JPMorgan's Marko Kolanovic is calling "quantitative exuberance." That's a little bit of an eye-roller. Apparently, everyone had the same idea for their year ahead previews. "Let's do a riff on 'irrational exuberance.'" Someone was first with "rational exuberance" (Barclays maybe), then Goldman picked it up, so I suppose it was only right that the Street's most famous quant put h