Gina Francolla is the Senior Producer of Quantitative & Market Data Services at CNBC.
After rising to a new 4-year high last month, utilities are now the only large S&P sector trading in the red this year.
Earlier in the session, Big Lots shares were down as much as 21.8 percent, their worst intraday loss since Nov. 2008.
Paraskevidekatriaphobia is the fear of Friday the 13th, but investors should not be too frightened.
Investors hungry for yield have latched on to "the Dogs of the Dow" strategy, which pays off more often than not.
U.S. stocks are on track for eight quarters of consecutive gains—the longest winning streak in 16 years.
Three sectors have managed gains of more than 20 percent in 2014, while two others are lagging badly.
The Dow Jones industrial average has historically taken an average of about 32 months to jump from one thousand-point mark to the next.