NEW YORK (

TheStreet

) -- Stock futures pointed to a mixed open Tuesday as U.S. investors coming back from a long weekend digested lower-than-expected earnings from

Citigroup

(C) - Get Report

, and news that

Apple

(AAPL) - Get Report

CEO Steve Jobs will take a medical leave of absence.

Futures for the

Dow Jones Industrial Average

were up by 16 points, or 9 points above fair value, at 11,741. Futures for the

S&P 500

were lower by 1 point, or 1 point below fair value, at 1288, while

Nasdaq

futures were off by 18 points, or 20 points below fair value.

Stocks rose Friday, lifted by financials, which gained strength on better-than-expected earnings from

JPMorgan Chase

(JPM) - Get Report

.

Shares of

Citigroup were down 3.7% at $4.94 ahead of Tuesday's opening bell after the company missed analysts' estimates with fourth-quarter earnings of 4 cents a share and revenue of $18.4 billion. According to

Briefing.com

, Wall Street had been looking for a profit of 8 cents a share, and revenue of $20.4 billion.

In other earnings news,

Delta Air Lines

(DAL) - Get Report

swung to a fourth-quarter adjusted profit of 19 cents a share on sales of $7.8 billion. Analysts had been anticipating earnings of 24 cents a share on sales of $7.7 billion. The stock was down 1.7% to $12.54 in early trading.

Shares of

TD Ameritrade

(AMTD) - Get Report

were down 3.6% at $19.91 during the premarket session as the company met analysts' expectations for a profit of 25 cents a share on sales of $648 million.

Hong Kong's Hang Seng shed 0.01% while Japan's Nikkei added 0.2%. London's FTSE was gaining 1.2% and the DAX in Frankfurt was ahead by 1.1%.

The Federal Reserve Bank of New York said the Empire State manufacturing survey rose to 11.92 in January, from December's downwardly-revised reading of 9.89. According to Briefing.com, economists had expected the survey to come in at 12, from December's initial reading of 10.57.

At 10 a.m., economists expect the National Association of Home Builders' housing market index to hold at 16 in January.

Apple shares were down 4.6% to $332.30 following Jobs' Monday announcement that he would take his second medical leave of absence in two years. Chief operating officer Tim Cook will step in during his absence.

After the close of trading, Apple and

IBM

(IBM) - Get Report

are scheduled to report quarterly earnings. According to

Briefing.com

, analysts expect Apple to post a first-quarter profit of $5.38 a share, and IBM is slated to report fourth-quarter earnings of $4.08 a share.

Financial services company

Comerica

(CMA) - Get Report

agreed to acquire

Sterling Bancshares

(SBIB)

in a deal that values Sterling at $10 a share, or $1.03 billion. Comerica's stock was down 5.3% to $40 in early trading while Sterling's stock was up 19.5% to $9.20.

Danaher

(DHR) - Get Report

signed an agreement to sell its Pacific Scientific Aerospace business to

Meggitt

, a U.K.-based aerospace company, for $685 million. Shares of Danaher were off by 0.05% at $47.12.

In commodity markets, the February crude oil contract was trading 30 cents lower at $91.24 a barrel. The February gold contract was up by $11.40 to trade at $1,371.90 an ounce.

The dollar weakened against a basket of currencies with the dollar index down by 0.6%. The benchmark 10-year Treasury note rose 13/32, diluting the yield to 3.283%.

.

--Written by Melinda Peer in New York

.

Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.