* DuPont extends $6.1 bln Danisco bid
* Campbell Soup cuts forecast, shrs fall
* Futures: Dow off 6 pts, S&P 0.4 pt, Nasdaq off 3.75 pts
* For up-to-the-minute market news see [
] (Adds Campbell earnings)By Edward Krudy
NEW YORK, Feb 18 (Reuters) - U.S. stock index futures were little changed on Friday after recent advances pushed indexes to multi-year highs and as Wall Street eyed a third week of gains.
The S&P 500, up 4.2 percent so far this month, has doubled in less than two years, the quickest 100 percent jump since the Great Depression.
However, volume has been light in the most recent leg of the rally, with just 6.7 billion shares changing hands Thursday on the New York Stock Exchange, NYSE Amex and Nasdaq combined -- the second lowest total so far in 2011.
"I've never seen a market like this," said Paul Mendelsohn, chief investment strategist at Windham Financial Services. A market watcher for 35 years, he is taking profits in every area but commodities.
"No matter where we start out in the morning, buyers come in," he said. "I'm showing by every technical and quantitative standard I have, this market is at extreme levels."
S&P 500 futures <SPc1> were off 0.4 point and below fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures <DJc1> dropped 6 points, and Nasdaq 100 futures <NDc1>lost 3.75 points.
"Everyone I know wants to get into this market suddenly," said Mendelsohn. "They've seen it go up, and they want to be in it." ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ For ANALYSIS-Is this bull market for real?, see [
] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^China raised banks' required reserves by 50 basis points on Friday, showing no let-up in the government's campaign to stamp out stubbornly high inflation.
A Group of 20 meeting in Paris will be on investors' radar screens, as the world's top central bankers take center stage on Friday ahead of the two-day event charged with tackling global imbalances. For details, see [
]Political unrest in the oil-producing Middle East and North Africa region is also likely to be closely monitored, as crowds in Libya, Yemen, Iran and Bahrain took to the streets in anti-government protests. [
]Chemicals group DuPont <DD.N> extended its 33.4 billion crown ($6.1 billion) offer for Danish food and enzymes group Danisco <DCO.CO> to April, hoping to gain more acceptances as it awaited regulatory approvals. [
]Campbell Soup Co <CPB.N> reported lower quarterly profit and cut its full-year forecast, hurt by declining U.S. sales. The shares fell 3 percent to $33.85. [
] (Editing by Jeffrey Benkoe)