From the excellent Vimal Gor at BT:
Off to the races
2018 has started with a bang, first we saw the melt-up and then we saw the crash. The S&P is virtually unchanged from the year-end levels but the volatility has been massive. To put it in perspective, this was the strongest January performance the S&P has seen since 1989 (see chart 1), which was then followed by a brutal selloff which saw the VIX jump from 10 to 50.