Dow, Nasdaq: May Worst Month in Two Years

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"May is always a difficult month for the market, and this month has lived up to that reputation," said Fred Dickson, chief market strategist at D.A. Davidson, noting that the market has suffered declines in May for three out of the last four years.

The Dow and S&P 500 dropped more than 6% in May. In fact, the Dow only booked five positive days this month. The last time this occurred was in January 1968. Meanwhile, the Nasdaq has declined more 7%.

The Dow and Nasdaq logged the worst monthly performance since May 2010, when investors were spooked by the Flash Crash, while the S&P 500 posted its biggest monthly loss since September 2011. As stocks have tumbled, investors have rushed toward the safety of U.S. Treasuries, pushing the 10-year yield to record lows. Read more >>