China Petroleum & Chemical Corp Among the NYSE's Biggest Movers on November 23, 2012

The market is currently up, with the Nasdaq moving up 1.3%, the S&P 500 rising 1%, and the Dow increasing 1%. Formerly run as a private organization, the NYSE became a public entity in 2005 following the acquisition of electronic trading exchange Archipelago.

The biggest movers traded on the NYSE so far are:

Company	Market Cap	Percentage Change
Companhia de Saneamento Basico (NYSE:SBS)	$8.9 billion	+7.8%
US Silica Holdings (NYSE:SLCA)	$849.2 million	-5.8%
Nelnet (NYSE:NNI)	$1.33 billion	-5.7%
China Petroleum & Chemical Corp (NYSE:SNP)	$91.03 billion	+3%
Nationstar Mortgage Holdings (NYSE:NSM)	$2.52 billion	-2.9%
Novo Nordisk A/S (NYSE:NVO)	$90.17 billion	+2.8%
Grupo Aeroportuario del Pacifico (NYSE:PAC)	$2.88 billion	-2.7%

Broker Summary: Charles Schwab Online Brokerage

Increasing 7.8%, Companhia de Saneamento Basico (NYSE:SBS) is trading at $84.24 per share. So far this morning, 310,814 shares have changed hands. This is 0.6 times its average daily volume.

US Silica Holdings (NYSE:SLCA) is down 5.8% to reach $15.14 per share. So far today, the company's volume is 191,247 shares, which is likely to result in less activity than yesterday's volume of 497,242 shares.

After a decline of 5.7%, Nelnet (NYSE:NNI) has hit a share price of $26.43. So far today, the company's volume is 258,371 shares.

After rising 3%, China Petroleum & Chemical Corp (NYSE:SNP) is currently trading at a share price of $107.88. The company's volume is currently 41,969 shares for the day, consistent with its average over the last three months.

Nationstar Mortgage Holdings (NYSE:NSM) has decreased to $27.10 per share, a 2.9% fall. This morning, the company's volume is 139,972 shares. This is 0.1 times the average daily volume.

Novo Nordisk A/S (NYSE:NVO) has moved up 2.8% and is currently trading at $159.69 per share. So far today, 215,771 shares have changed hands, with trading activity in keeping with yesterday's.

Currently trading at $49.91 per share, Grupo Aeroportuario del Pacifico (NYSE:PAC) has fallen 2.7%. The company's volume for the day so far is 15,237 shares.

The Bottom Line The nature of the market is such that stocks will have good days and bad days. It is important to weigh current activity against historical performance when making any investment decisions. Keep in mind that all these ratios should be compared against historical numbers and industry information in order to get a more complete picture.