5 Things You Should Know Before the Stock Market Opens

NEW YORK ( TheStreet) -- U.S. stock futures were signaling a slightly higher Wall Street open on Monday and European shares were mixed on another rise in Spain's borrowing costs.

Most Asian indices declined. Japan's Nikkei fell 1.7% to finish at 9,470.64.

The Commerce Department releases monthly retail sales data at 8:30 a.m. on Monday, and economists forecast a 0.3% percent increase in March sales; retail sales rose 1.1% in February.

Excluding autos, sales are seen rising in March by 0.6%.

Citigroup ( C) is expected to report first-quarter earnings before the bell Monday and analysts see the bank earning $1 a share, the same as a year earlier, on revenue of almost $20 billion.

Carlyle Group, the private-equity firm, plans to sell 30.5 million shares priced between $23 and $25 in its initial public offering, which could come before the end of April, The Wall Street Journal reported, citing people familiar with the matter.

The shares would represent about 10% of the firm, and value Carlyle at more than $7 billion, the people said. That value is toward the lower end of expectations.

The numbers are expected to be disclosed in a securities filing as soon as Monday, according to people familiar with the matter, the newspaper said.

Oracle's ( ORCL) case against Google ( GOOG) over smartphone technology begins Monday in San Francisco with jury selection.

Oracle claims that Google's Android operating system infringes patents and copyrights associated with the Java programming language, which Oracle obtained through its purchase of Sun Microsystems.

The tax filing deadline typically falls on April 15, but taxpayers have until Tuesday to file their taxes this year.

Filers are getting a break because April 15 was a Sunday, and Monday, April 16, is Emancipation Day, a holiday in Washington D.C. The tax code states that filing deadlines can't fall on Saturdays, Sundays or holidays.

-- Written by Joseph Woelfel

>To contact the writer of this article, click here: Joseph Woelfel

>To submit a news tip, send an email to: tips@thestreet.com.