2. -- The economic calendar in the U.S. Tuesday includes the Consumer Price Index for March at 8:30 a.m. EDT, housing starts and building permits for March at 8:30 a.m., and industrial production at 9:15 a.m.
3. -- U.S. stocks on Monday finished with declines after two bomb blasts at the Boston Marathon. The blasts occurred before the close of trading, with global commodity prices already pressured by a less-than-expected rise in Chinese growth. The S&P 500 fell 2.3% to 1,552.36, the most since Nov. 7, 2012.
4. -- The latest reports from Boston said at least three people were dead and more than 140 were injured after two bombs exploded in the crowded streets near the finish line of the Boston Marathon on Monday.
5. -- Investment bank Goldman Sachs (GS - Get Report) posted first-quarter earnings Tuesday of $4.29 a share on revenue of $10.09 billion. Wall Street expected Goldman to report earnings of $3.88 a share on revenue of $9.72 billion.
6. -- The world's biggest beverage company Coca-Cola (KO - Get Report) posted quarterly earnings of 39 cents a share, below analysts' estimates of 45 cents a share. Coca-Cola said volume growth in the first quarter was 4%.
7. -- Johnson & Johnson (JNJ - Get Report), the world's biggest maker of health care products, said first-quarter earnings fell 11% to $3.48 billion, or $1.22 a share. Analysts were looking for first-quarter profit of $1.40 a share.
8. -- Yahoo! (YHOO - Get Report) is expected by analysts after Tuesday's closing bell to report first-quarter earnings of 24 cents a share on revenue of $1.1 billion. Shares of the Internet company have risen about 55% since Marissa Mayer joined the company last summer. Yahoo! earned $286 million, or 23 cents a share, on revenue of $1.08 billion in the year-earlier quarter.
9. -- Intel (INTC - Get Report), whose processors are inside about 80% of the world's PCs, is forecast by Wall Street to report first-quarter profit of 41 cents a share on revenue of $12.59 billion. In the first quarter of 2012, Intel earned 53 cents a share on sales of $12.9 billion.