Before the bell: Stocks headed for early gains

U.S. stocks were set to open higher Monday as oil, gold and silver prices continued to climb, and investors geared up for a week of fresh economic data.
Stocks edged higher Friday, as a steep sell-off in the euro dampened U.S. investor enthusiasm about a stronger-than-expected jobs report.
But all three indexes closed down more than 1% for the week, as a steep sell-off in commodities - especially silver and crude - spilled over into the broader market.
Part of the reason for the pullback in commodity prices last week was that they may have risen too rapidly.

Meanwhile, sovereign debt woes continue to plague Europe.
Investors will continue to keep an eye on Greece. Late last week, there were rumors about the country abandoning the eurozone. But early Monday, reports swirled about the debt-ridden country considering another bailout to fund its debts.
China will also be on investors' minds Monday. The country will release its latest trade gap figures overnight.
Companies: Tyson Foods (TSN, Fortune 500) reported earnings per share that beat by a penny but the company missed on revenue. Shares were flat in premarket trading.
Economy: Among the key reports due later in the week are the March trade balance, due Wednesday, the April retail sales figures on Thursday and a reading on April consumer prices slated for Friday.