The market may be slow to catch on to good stocks, but when it finally does, look out, because it usually arrives like a flash flood. After a company posts a positive earnings report, passes an FDA trial, or gets upgraded by a Wall Street firm, investors who had previously ignored the stock all of a sudden want in.

While jumping on the pile isn't the best practice, it's worth seeing what's piqued the market's interest in these stocks. After all, your stock could be next.

Here are five stocks rising on unusual trading volume. We've also included the stocks' CAPS rating, as determined by our Motley Fool CAPS investing community of more than 115,000 members.

Company

Price Change

Volume Change

CAPS Rating
(out of 5)

salesforce.com (NYSE:CRM)

1.70%

257%

*

Integra LifeSciences (NASDAQ:IART)

2.71%

183%

****

Arena Resources (NYSE:ARD)

2.32%

182%

****

EOG Resources (NYSE:EOG)

5.20%

138%

****

Genoptix (NASDAQ:GXDX)

3.25%

137%

*****

Sources: Yahoo! Finance and Investor's Business Daily; price and volume figures are intraday and could be different by market close.

Join us on CAPS to learn more about these and countless other interesting stock ideas.

Todd Wenning does not own shares of any company mentioned. Integra LifeSciences Holdings is a Motley Fool Stock Advisor recommendation. Try any of our Foolish newsletters today, free for 30 days. The Fool's disclosure policy rules Fools.