The market is having a good day so far. The Nasdaq is up 0.2%; the S&P 500 has risen 0.6%; and the Dow has climbed 0.5%. Most stocks on the Nasdaq Composite Index are technology and Internet-related, but there are financial, consumer, bio-tech and industrial companies as well.

The biggest movers traded on the NASDAQ so far are:

Company Market Cap Percentage Change
American Railcar Industries (Nasdaq:ARII) $565.4 million +15.4%
Cornerstone OnDemand (Nasdaq:CSOD) $1.32 billion +10.1%
Tornier (Nasdaq:TRNX) $717.1 million -8.8%
LPL Investment Holdings (Nasdaq:LPLA) $3.05 billion -5.7%
Home Inns & Hotels Management Inc (Nasdaq:HMIN) $1.29 billion -5.4%
Infinity Property and (Nasdaq:IPCC) $608.6 million -4.2%
Alliance Resource Partners (Nasdaq:ARLP) $2.11 billion -4%

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American Railcar Industries (Nasdaq:ARII) is currently at $30.55 per share after a dramatic increase of 15.4%. So far today, the company's volume is 186,085 shares, 2.8 times the current daily average.

After a big jump of 10.1%, Cornerstone OnDemand (Nasdaq:CSOD) is trading at $29 per share. The company's volume for the day so far is 747,303 shares. This is greater than yesterday's volume of 693,700 shares.

Tornier (Nasdaq:TRNX) is trading at $15.68 per share, down 8.8%. The company's volume for the day so far is 238,495 shares, three times the average volume over the last three months.

LPL Investment Holdings (Nasdaq:LPLA) is currently trading at a share price of $26.50, a 5.7% decline. This morning, the company is trading a volume of 1.4 million shares.

Slipping 5.4%, Home Inns & Hotels Management Inc (Nasdaq:HMIN) is currently trading at $26.96 per share. At 103,450 shares, the company's volume so far today is consistent with its current daily average.

After a decline of 4.2%, Infinity Property and (Nasdaq:IPCC) has hit a share price of $49.96. So far today, the company's volume is 58,816 shares. This is more trading activity than there was yesterday.

Alliance Resource Partners (Nasdaq:ARLP) is down 4% to reach $54.91 per share. With 109,345 shares changing hands so far today, the company's volume is one 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. Daily stock performance should be weighed against historical performance and put in context of the market overall. Keep in mind that all these ratios should be compared against historical numbers and industry information in order to get a more complete picture.

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