Ryan Detrick says low volatility may now be the market’s least favored factor. The debate comes as 325 S&P 500 stocks rose for a second day even as memory-chip

Ryan Detrick says low volatility may now be the market’s least favored factor. The debate comes as 325 S&P 500 stocks rose for a second day even as memory-chip names including Micron, AMAT, WDC and STX remain more than 20% below recent highs.