If you are looking for clues to tell 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.

Mattson Technology (MTSN) topped the insider-buying charts for the week ending Feb. 25 as insiders snapped up 5,000,000 shares of company stock at a market value of $12,350,000. During the past six months, insiders have increased their overall holdings in the company by -6.49% and now own 0.14% of MTSN stock.

Analyst upgrades:

• Bernstein upgraded Lincoln National (NYSE: LNC) to Outperform from Market Perform based on relative valuation and expectations the company will repay TARP without a capital raise. The firm raised its target to $34 from $26.
• Thomas Weisel upgraded Ticketmaster (NASDAQ: TKTM) to Overweight from Market Weight and raised its target to $12 from $8 citing dynamic ticket pricing and the potential merger with Live Nation (NYSE: LYV).
• Citigroup upgraded Harley-Davidson (NYSE: HOG) to Hold from Sell after channel checks indicated retail sales have improved since Q2. The firm raised its target on shares to $26 from $14.
• McDermott (NYSE: MDR) was upgraded to Outperform from Neutral at Credit Suisse.
• Ericsson (NASDAQ: ERIC) was upgraded to Hold from Sell at Deutsche Bank.
• General Electric (NYSE: GE) was upgraded to Overweight from Neutral at JPMorgan.