Stock futures pointed to a lower open on Wall Street on Monday following a long weekend, as oil tumbled nearly $3 a barrel on mounting doubts over a quick economic recovery.

At 4:54 a.m. EDT, futures for the S&P 500 were down 0.9 percent, Dow Jones futures were down 0.9 percent and Nasdaq 100 futures were down 0.9 percent.

Oil sank to a five-week low near $64 a barrel on Monday, as investors remained cautious over the prospects of a speedy global economic turnaround, while the dollar gained ground in the wake of last week's grim U.S. jobs data.

European shares were down 1.6 percent at a seven-week low on Monday morning, dragged by falling shares of commodity-related companies such as BP , Royal Dutch Shell and Rio Tinto .

In Asia, South Korea's Samsung Electronics <005930.KS>, the world's top maker of memory chips and flat screen TVs, forecast second-quarter earnings well above market estimates, driving its shares up more than 4 percent on Monday.

A U.S. judge on Sunday approved General Motors Corp's bankruptcy sale in a move that will allow the company's most profitable assets to exit bankruptcy protection under government ownership.

Global miner Rio Tinto agreed to sell its Americas food packaging business for $1.2 billion U.S.-based Bemis Co Inc.

Morgan Stanley , grappling with real estate investment losses, may sell its 1.8 percent stake in Japanese beer maker Sapporo Holdings <2501.T>, a move that could weaken its toehold in Japan's property business.

PepsiCo Inc

pledged on Monday to invest $1 billion in Russia over three years and said it was confident in the Russian market, even as the country suffers its first recession in a decade.

On the macro front, the Institute for Supply Management releases its June non-manufacturing index, at 10 a.m. EDT.

U.S. stocks tumbled on Thursday, driving the S&P 500 down to its third-straight weekly loss, as a steeper-than-expected slide in June non-farm payrolls revived caution about economic recovery prospects.

The Dow Jones industrial average <.DJI> dropped 223.32 points, or 2.63 percent, to 8,280.74. The Standard & Poor's 500 Index <.SPX> slid 26.91 points, or 2.91 percent, to 896.42. The Nasdaq Composite Index <.IXIC> sank 49.20 points, or 2.67 percent, to 1,796.52.

On the year, the Dow is down 5.6 percent and the S&P is down 0.8 percent.

U.S. financial markets were closed on Friday for the U.S. Independence Day holiday, with July 4th falling on Saturday this year.

(Reporting by Blaise Robinson; Editing by Hans Peters)

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