Updated from 7:02 a.m. EST

NEW YORK (TheStreet) -- Here are 10 things you should know for Thursday, Jan. 15:

1. -- U.S. stock futures pointed lower on Thursday and European stocks turned higher after Switzerland said it would allow its currency to trade freely against the euro.

The Swiss National Bank unexpectedly abandoned a ceiling on the Swiss franc against the euro, upsetting exporters as the currency surged and pushed the benchmark index in Zurich down by almost 9%.

Asian shares finished the session higher.

2. -- The economic calendar in the U.S. on Thursday includes weekly initial jobless claims at 8:30 a.m. EST, the Producer Price Index for December at 8:30 a.m., the Empire State Manufacturing Index for January at 8:30 a.m., and the Philly Fed Index for January at 10 a.m.

3. -- U.S. stocks on Wednesday fell after retail sales in December dropped faster than expected and the World Bank warned of sluggish global growth over the next two years.

The S&P 500 closed down 0.58%, recovering from a 1% drop earlier in the day after the Federal Reserve's Beige Book provided evidence of "modest" to "moderate" growth across the Fed's 12 districts. The Dow Jones Industrial Average clawed its way back from a 300-point decline to close down 187 points, or 1.06%, and the Nasdaq fell 0.48%.

4. -- Samsung Electronics (SSNLF) recently offered to buy BlackBerry (BBRY) for as much as $7.5 billion, according to a person familiar with the matter and documents seen by Reuters.

South Korea's Samsung proposed an initial price range of $13.35 to $15.49 a share, representing a premium of 38% to 60% over BlackBerry's current trading price, the source said.

Representatives from the two companies met last week to discuss a potential transaction, the source told Reuters.

In a statement, BlackBerry said it "has not engaged in discussions with Samsung with respect to any possible offer to purchase BlackBerry." Samsung told Reuters that "media reports of the acquisition are groundless."

"Strategically it makes a lot of sense," Hudson Square analyst Dan Ernst told TheStreet in an email. "Samsung wants into the enterprise and wants less reliance on Google (GOOG) - Get Report ."

BlackBerry shares fell 14.8% in premarket trading to $10.73.

5. -- Bank of America(BAC) - Get Report  reported fourth-quarter earnings of 25 cents a share, below analysts' forecast of 31 cents and below year-earlier earnings of 29 cents.

Revenue was $18.955 billion; analysts forecast fourth-quarter revenue of $20.94 billion.

The bank reported a decline in quarterly fixed-income trading revenue to $1.5 billion from $19 billion a year earlier. The decline was tied to a slowdown in client trading activity, Bank of America said.

The stock fell 2.8% in premarket trading.

6. -- Citigroup(C) - Get Report  said earnings plunged in the fourth quarter as it recorded hefty legal charges.

The bank earned $350 million, or 6 cents a share, in the quarter, down from year-earlier earnings of $2.46 billion. The latest quarter included $3.5 billion in legal costs.

Analysts expected Citigroup to earn 9 cents a share in the fourth quarter.

The stock fell 1.1% in premarket trading.

7. -- RadioShack (RSH) is preparing to file for bankruptcy protection as early as next month, people familiar with the matter told The Wall Street Journal, following a sputtering turnaround effort that left the electronics chain short on cash.

A filing could come in the first week of February, one of the people said. RadioShack has reached out to potential lenders who could help fund its operations during the process, another person told the Journal.

8. -- Chip giantIntel(INTC) - Get Reportis forecast to post fourth-quarter earnings on Thursday of 66 cents a share on revenue of $14.71 billion.

9. -- Adobe Systems(ADBE) - Get Report  said it plans to buy back up to $2 billion of its shares by the end of fiscal 2017. 

The software company already has used up its current $2 billion buyback authority.

The stock rose 0.9% in premarket trading.

10. -- New York Times(NYT) - Get Report said Mexican billionaire Carlos Slim is now the largest holder of its publicly traded shares.

Slim lent the newspaper company $250 million at the height of the recession, as print advertising sales dropped across the industry and the company slashed staff and sold off most of its midtown Manhattan headquarters to raise cash. New York Times later refinanced the high-interest loan and paid it off three years early.

The company said Wednesday that Slim and entities he controls recently spent nearly $101.1 million to exercise warrants he received for that investment, acquiring 15.9 million shares for about $6.36 each, roughly half the stock's current price. The purchase brings his stake to about 27.8 million Class A shares, or 16.8%.

-- Written by Joseph Woelfel

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