Apple and More Big Movers on the Nasdaq on November 19, 2012

So far today, the market has been on the rise. The Nasdaq has moved up 1.7%; the S&P 500 has risen 1.5%; and the Dow has increased 1.3%. The Nasdaq Composite Index is a capitalization-weighted index, with each company weighted in proportion to its market value.

The biggest movers traded on the NASDAQ so far are:

Company	Market Cap	Percentage Change
SINA Corporation (Nasdaq:SINA)	$3 billion	+8.5%
Cirrus Logic (Nasdaq:CRUS)	$1.85 billion	+7.8%
athenahealth (Nasdaq:ATHN)	$2.2 billion	+6.1%
Acacia (Nasdaq:ACTG)	$1.17 billion	-5.3%
Apple (Nasdaq:AAPL)	$496.38 billion	+4.9%
Geospace (Nasdaq:GEOS)	$919.8 million	+4.2%
Genomic Health (Nasdaq:GHDX)	$868.1 million	-3.7%

Broker Summary: E-Trade Financial

After rising 8.5%, SINA Corporation (Nasdaq:SINA) is currently trading at a share price of $48.90. So far today, the company's volume is 4.8 million shares, 1.6 times its current daily average.

Cirrus Logic (Nasdaq:CRUS) has moved up 7.8% and is currently trading at $30.48 per share. The company's volume is currently two million shares. This is a sign that there will be less trading activity than there was yesterday.

athenahealth (Nasdaq:ATHN) has risen 6.1% to hit a current price of $64.43 per share. The company's volume is currently 336,966 shares for the day, 0.6 times its current three-month average.

Acacia (Nasdaq:ACTG) is down 5.3% to reach $22.19 per share. So far today, 353,103 shares have changed hands.

Apple (Nasdaq:AAPL) has risen 4.9% and is currently trading at $553.60 per share. So far today, the company's volume is 14.1 million shares, consistent with its current daily average.

Geospace (Nasdaq:GEOS) is at $75.17 per share after an increase of 4.2%. The company is trading at a volume of 84,693 shares.

At $27.19, Genomic Health (Nasdaq:GHDX) has slipped 3.7%. With 72,451 shares changing hands so far today, the company's volume is 0.2 times its average over the past three months.

The Bottom Line No matter the economic climate, Wall Street will always have stocks that make major moves each week. Paying close attention to the previous ratios will help you identify key times to adjust your strategy. Keep in mind that all these ratios should be compared against historical numbers and industry information in order to get a more complete picture.