Stocks fall ahead of manufacturing data

NEW YORK — Stocks began May with modest moves ahead of a key reading on U.S. manufacturing.

Stocks are falling moderately as Wall Street comes off its best month in nine years. The market has been growing more optimistic the economy is near a turnaround. Investors expect the Institute for Supply Management’s manufacturing index will support that belief — economists predict the April index will the smallest contraction since last October.

The first day of May will also bring data on factory orders, consumer sentiment and vehicle sales.

In the first half-hour of trading, the Dow Jones industrial average fell 33.21, or 0.4 percent, to 8,134.91.

Broader stock indicators also fell. The Standard & Poor’s 500 index fell 3.71, or 0.4 percent, to 869.10, and the Nasdaq composite index fell 9.47, or 0.6 percent, 1,707.83.

In addition to economic data, investors are focused on mixed earnings reports.

Late Thursday, two insurers — The Hartford Financial Services Group Inc. and MetLife Inc. — posted losses for the first quarter.

The Hartford fell 91 cents, or 8 percent, to $10.56, while MetLife fell $2.54, or 8.5 percent, to $27.21.

But computer security software maker McAfee Inc. said its first-quarter profit jumped 77 percent. The stock rose $2.84, or 7.6 percent, to $40.38.

Better-than-expected earnings have been a big market driver in recent weeks. The S&P 500 index, a broad measure of the market, rose 9.4 percent in April, the biggest monthly jump since March 2000.

News on Thursday that Chrysler LLC will go through bankruptcy reorganization put just a small dent in Wall Street’s recovery, which began in early March. The Dow, still up 24.8 percent from its 12-year low on March 9, dipped 0.2 percent on the last day of April.