NEW YORK ( TheStreet) -- U.S. stock futures were indicating a flat to slightly lower open Monday on Wall Street, while European shares were higher and Asian stocks gained in a thin trading session because of holidays in Japan and China. The economic calendar in the U.S. on Monday includes personal income and consumption data for March at 8:30 a.m. EDT. Economists expect a 0.3% rise in income and a 0.4% increase in spending, according to Reuters. Income rose 0.2% in February, while spending was up 0.8%. Spain is back in recession for the second time in three years. Spain's economy slipped into recession in the first quarter as gross domestic product fell 0.3%, unchanged from the October to December quarter. Spain is dealing with a massive public deficit of 8.5% as of the end of 2011, and a battered banking system. Unemployment in Spain is now 24.4%. It would be difficult to add Apple ( AAPL) and Google ( GOOG) to the Dow Jones Industrial Average because of how the index is calculated, but Barron's on Sunday said the companies are the leading candidates to one day join the Dow. A new company or two could be added in the next year, Barron's said. The three stocks most likely to get the boot are Alcoa ( AA), Bank of America ( BAC) and Hewlett-Packard ( HPQ), Barron's said. NYSE Euronext ( NYX) said first-quarter adjusted earnings declined 32%. The exchange saw a slowdown in trading, particularly in its derivatives trading unit, and was hit by costs associated with its failed merger with Germany's Deutsche Boerse. Adjusted profit in the quarter was 47 cents a share; analysts were looking for 48 cents. Warner Chilcott ( WCRX), the drugmaker, is weighing options including a possible sale after receiving interest from strategic and private-equity buyers, according to people with knowledge of the matter, Bloomberg reported. -- Written by Joseph Woelfel >To contact the writer of this article, click here: Joseph Woelfel >To submit a news tip, send an email to: firstname.lastname@example.org.