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Futures try to hold higher amid economic data

U.S. stock index futures pointed to a slightly higher open on Wednesday amid earnings from big name financial companies and some top-tier data releases that will be closely watched by investors for hints on the strength of the U.S. economy.

Following on from JPMorgan's disappointing results late Tuesday, Bank of America beat analysts' expectations. Meanwhile ,BlackRock said its third-quarter profits fell 8 percent.

Wells Fargo also reported earnings that beat expectations.

Read MoreHow to trade JPMorgan's mixed earnings

Traders work on the floor of the New York Stock Exchange.
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Traders work on the floor of the New York Stock Exchange.

Earnings could be a particular challenge for stocks this quarter, with analysts expecting a 4.8 percent decline in S&P 500 profits, according to Thomson Reuters. So far, there's been a trickle of reports, but the season gains momentum Wednesday with results from the major financials and others, like Delta Airlines, Kinder Morgan and Netflix reporting after the close.

JPMorgan, which is seen as a bellwether for the rest of the financial sector, earned $1.32 per share, excluding $2.2 billion in tax benefits and other items. Volatile financial markets hit revenues, which fell 6.4 percent to $23.5 billion.

On the data front U.S. retail sales barely rose in September as cheaper gasoline weighed on service station receipts, while producer prices posted their biggest decline in 8 months.

August business inventories data are also due at 10:00 a.m. and the U.S. Federal Reserve's latest Beige Book at 2:00 p.m.

Chinese inflation data, released overnight also weighed on sentiment, cooling more than expected last month, adding to concerns about the health of the world's second-biggest economy.

Read MoreFeeble China inflation bolsters stimulus hopes

China's consumer price index (CPI) rose 1.6 percent in September from a year earlier, against forecasts of a 1.8 percent rise from a Reuters poll and following August's 2 percent gain.

The weak data weighed on Asian and European stocks, with major indices in Europe falling in the region of 1 percent in mid-morning London trade.

China's share markets slid into negative territory in the afternoon trading session, with the Shanghai Composite ending down 1 percent.

CNBC's Patti Domm and Reuters contributed to this story.