NYSE Stocks, Including Schlumberger, Making Big Moves on December 14, 2012

It's been a bad morning for the market, with the Nasdaq slipping 0.8%, the S&P 500 declining 0.2% and the Dow falling 0.1%. Also known as the "Big Board", the NYSE relied for many years on floor trading only, using the open outcry system.

The biggest movers traded on the NYSE so far are:

Company	Market Cap	Percentage Change
Ford (NYSE:F)	$42.97 billion	+65.2%
Quad/Graphics (NYSE:QUAD)	$789 million	+15.1%
VeriFone Systems (NYSE:PAY)	$3.58 billion	-11.6%
USANA Health Sciences (NYSE:USNA)	$604 million	-10.2%
Centene (NYSE:CNC)	$2.32 billion	-9%
WellCare Health Plans (NYSE:WCG)	$2.2 billion	-5.9%
Schlumberger (NYSE:SLB)	$96.33 billion	-5.9%

Broker Summary: Fidelity Online Brokerage

Ford (NYSE:F) has soared 65.2% to reach a current price of $18.62 per share. The company's volume is currently 1,775 shares for the day, zero times the average daily volume.

Quad/Graphics (NYSE:QUAD) is currently at $19.23 per share after a dramatic increase of 15.1%. The company's volume for the day so far is 337,460 shares. Yesterday, volume was only 95,794 shares.

VeriFone Systems (NYSE:PAY) is at a share price of $29.36 after a sharp decline of 11.6%. So far today, the company's volume is 4.9 million shares, 1.9 times its current three-month average.

Shares of USANA Health Sciences (NYSE:USNA) are currently trading at $37.60, a steep decline of 10.2%. So far today, 467,286 shares have changed hands.

At $40.93, Centene (NYSE:CNC) has slipped 9%. So far today, the company's volume is 1.2 million shares, 1.9 times its current daily average.

WellCare Health Plans (NYSE:WCG) has fallen 5.9% and is currently trading at $47.96 per share. The company's volume is currently 984,267 shares. This is greater than yesterday's volume of 359,874 shares.

After a decline of 5.9%, Schlumberger (NYSE:SLB) has hit a share price of $68.27. With 15.1 million shares changing hands so far today, the company's volume is 2.6 times the current three-month average.

The Bottom Line No matter the economic climate, Wall Street will always have stocks that make major moves each week. It is important to weigh current activity against historical performance when making any investment decisions. However, these fundamental metrics must be analyzed with historic data, industry information in addition to firm specific financial statements.