If you are looking for clues telling you which stocks have a good chance of increasing in value, you might want consider watching what insiders are doing. After all, talk is cheap, but when insiders put their own money on the line, you should sit up and take note.

American Superconductor Corp (AMSC) topped the insider-buying charts for the week ending July 9th as insiders snapped up 500,000 shares of company stock at a market value of $18,060,002. During the past six months, insiders have increased their overall holdings in the company by 35.53% and now own 10.05% of AMSC stock.

Kratos Defense & Security Solutions Inc (KTOS) was not far behind, with insiders buying 100,000 shares at a market value of $1,020,000. Insiders now own 2.07% of the company's stock after decreasing their overall holdings by 35.79% during the past six months.

Yahoo! (YHOO) closed at $15.17. Carl Icahn lowered his stake in YHOO to 11.99 million shares from 62.9 million. YHOO overall option implied volatility of 32 is below its 26-week average of 36, according to Track Data, suggesting decreasing price movement.

ISE Sentiment Index - ISEE closed at 91 on 2/12/10. ISEE 10-day moving average is 107.

NASDAQ 100 - QQQQ overall implied volatility at 24; 26-week average is 25.

Volatility Index S&P 500 Options - VIX up 3.61 to 21.67 10-day moving average is 16.98 according to Track Data.

Volatility Index NASDAQ 100 - VXN up 2.25 to 21.16; 10-day moving average is 17.80 according to Track Data.

NASDAQ 100 - QQQQ overall option Implied Volatility at 21: 26-week average is 19.

Semiconductor Holders Trust - SMH option implied Volatility 25; 26-week average is 22.

IShares Russell 2000 - IWM option implied volatility at 28, 26-week average is 19.

ISE Sentiment Index - ISEE 91 new Calls purchased for every new Put today. ISEE 10-day moving average is 150. ISEE 50-day moving average is 139.

August front month Equity Options expire; 8/17/07.

Daily Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com