The Stock Market Is Falling Again

Right now, the S&P 500 index is trading at 1833, down 0.2% from yesterday's close. If the losses hold today, it will mark the fifth day in the last six in which the index has closed lower.

"High-beta names are getting hit sharply - seems like a "sell the news" from CES," says Dave Lutz, head of ETF trading and strategy at Stifel Nicolaus.

Lutz points out that a lot of the momentum stocks - like Tesla, Facebook, 3D Systems, and Twitter - are now falling sharply after opening stronger.

Treasuries are also slightly lower today after yesterday's session, in which a mix of better-than-expected economic data and hawkish minutes from the FOMC's December meeting caused a big sell-off across the complex.