By Ryan Vlastelica
NEW YORK (Reuters) - U.S. stocks dropped 1 percent in a broad decline on Wednesday, with materials and energy shares leading the way lower as commodity prices dropped, while a selloff in Apple shares pressured the Nasdaq.
Apple Inc
All but two of the S&P 500's 10 major sectors dropped more than 1 percent while about four-fifths of stocks traded on the New York Stock Exchange and Nasdaq were lower.
The CBOE Volatility index, a measure of investor anxiety, spiked 26 percent, though action on the VIX was also influenced by the expiration of April futures contracts.
Mining and other materials companies sunk 2.6 percent while energy companies were off 2.6 percent as U.S. crude futures dropped 2.6 percent to $86.40 a barrel. Brent crude is on pace for its sixth straight daily decline.
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Financial stocks fell after Bank of America Corp
"Banks are clearly struggling," said Jim McDonald, chief investment strategist at Chicago-based Northern Trust Global Investments, which has $760 billion in assets. "Loan growth has been disappointing, which points to economic growth not being robust."
The Dow Jones industrial average was down 174.93 points, or 1.19 percent, at 14,581.85. The Standard & Poor's 500 Index was down 28.51 points, or 1.81 percent, at 1,546.06. The Nasdaq Composite Index was down 72.28 points, or 2.21 percent, at 3,192.35.
The S&P information technology sector fell 2.6 percent. In addition to Apple Inc
Intel Corp
Oil prices dropped on the prospect of sluggish fuel demand in the United States and China, a sign that economic growth was weak. Crude is down about 10 percent so far this year. Among the most active energy companies, Valero Energy
Markets have been volatile this week, with the S&P moving more than 1 percent in each session, putting the VIX on track for its biggest weekly jump since May 2010. While the S&P is down 2.6 percent on the week, it posted its second-best daily performance of the year on Tuesday.
Adding another element of uncertainty to the market, the U.S. Secret Service said that a letter addressed to President Barack Obama containing a suspicious substance was received at a White House mail screening facility on Tuesday. The letter came on the heels of the bombing on Monday in Boston.
"The ongoing sequence of these terrorist incidents ... doesn't create an environment for good investor psychology," said Bucky Hellwig, senior vice president at BB&T Wealth Management in Birmingham, Alabama, who speculated that investors could move into government bonds from stocks if such events proliferated.
Yahoo Inc
Textron Inc
On the upside, Mattel Inc
With 9 percent of the S&P 500 having reported, 67 percent have beaten earnings expectations, even with the average over the past four quarters, but above the average of 63 percent since 1994.
S&P 500 earnings are now expected to have risen 1.7 percent in the first quarter, based on actual results from 42 companies and estimates for the rest, according to Thomson Reuters data. That expectation is up from a previous estimate of 1.5 percent growth at the start of the month. At the start of the year analysts saw earnings growing 4.3 percent.
Other S&P 500 companies expected to report on Wednesday include American Express Co
The Federal Reserve is expected to release its Beige Book describing economic conditions at 2 p.m. (1600 GMT).
(Editing by Kenneth Barry and Nick Zieminski)