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.

Calumet Specialty Products Partners L P (CLMT) topped the insider-buying charts for the week ending July 9th as insiders snapped up 775,000 shares of company stock at a market value of $13,678,750. During the past six months, insiders have increased their overall holdings in the company by 0.37% and now own 53.69% of CLMT stock.

Alliance Healthcare Services Inc (AIQ) was not far behind, with insiders buying 450,000 shares at a market value of $2,024,250. Insiders now own 6.23% of the company's stock.

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.

Alliance Healthcare Services (AIQ) topped the insider-buying charts for the week ending July 9 with insiders snapping up 3,707,136 shares of company stock at a market value of $14,683,653. During the past six months, insiders have increased their overall holdings in the company by 0.31% and now own 6.23% of AIQ stock.

Analyst upgrades:

• UBS upgraded Wendy's/Arby's (NYSE: WEN) to Buy from Neutral and raised its target to $5.50 from $4.90 based on improving sales momentum at Wendy's and potential improvements at Arby's.
• Goldman upgraded 3M (NYSE: MMM) to Buy from Neutral and raised its target to $85 from $78. The firm cites 3M's short-cycle exposure and relative valuation for the upgrade.
• Thomas Weisel upgraded JCPenney (NYSE: JCP) to Market Weight from Underweight citing comfort in the company's intermediate-term recovery potential.
• UBS AG (NYSE: UBS) was upgraded to Buy from Hold at ING Group.
• Gap (NYSE: GPS) was upgraded to Overweight from Equal Weight at Barclays.
• Alliance Healthcare (NYSE: AIQ) was upgraded to Outperform from Market Perform at Wells Fargo.

Analyst upgrades:

• Citigroup upgraded shares of Consol Energy (NYSE: CNX) to Buy from Hold following the company's lowered guidance as 2009 is fully contracted with a 26% price increase. The firm raised its target to $40 from $38.
  
• Deutsche Bank upgraded AstraZeneca (NYSE: AZN) to Buy from Hold on valuation as it thinks the sell-off on the company's Q4 miss and cautious guidance is overdone.
  
• Wachovia upgraded Boston Scientific (NYSE: BSX) to Outperform from Market Perform because the firm thinks the outlook of the company's two main markets is improving. The firm believes the company's valuation is attractive. Thomas Weisel upgraded Boston Scientific to Overweight from Market Weight citing valuation and improving fundamentals.
• Goldman added MasterCard (NYSE: MA) to the Conviction Buy List.
  
• Accuray (NASDAQ: ARAY) was raised to Buy from Neutral at Piper Jaffray.
  
• KLA-Tencor (NASDAQ: KLAC) was upgraded to Buy from Neutral at Banc of America/Merrill.

MOST NOTEWORTHY: Alliance Imaging, Calpine and CommVault were today's noteworthy initiations:

• Stanford finds shares of Alliance Imaging (NYSE: AIQ) fairly valued and believes the company's transition to providing imaging services to hospitals from mobile imaging equipment to fixed imaging equipment will take at least several years. The firm initiated coverage with a Hold rating.
  
• Calpine (NYSE: CPN) was initiated with a Buy rating and $21.50 target at Jefferies. The firm views Calpine as a low-cost valuation generation company and expects earnings growth from its Western and Texas power plants to drive improved results.
  
• Cowen assumed CommVault (NASDAQ: CVLT) with a Neutral rating and sees limited upside to 2009 estimates due to sales and marketing investments, as well as competition.

OTHER INITIATIONS:

• UBS initiated Omrix Biopharm (NASDAQ: OMRI) with a Buy rating and $17 target.
  
• Susquehanna initiated Align Tech (NASDAQ: ALGN) with a Neutral rating.
  
• Zions Bancorp (NASDAQ: ZION) was assumed with a Neutral rating and $13 target at Baird.

MOST NOTEWORTHY: Staples, Office Depot, GlobalSCAPE and CytRx were today's noteworthy initiations:

• Jefferies initiated shares of Staples Inc (NASDAQ: SPLS) with a Hold rating and $22-$24 target. The firm finds the current valuation fair given the increased risk of excess store growth in the industry, increased promotional activity and deceleration of employment growth.
  
• Jefferies expects shares of Office Depot Inc (NYSE: ODP) to trade sideways given the company's accelerating store growth, greater promotional activity and execution issues. The firm resumed coverage with a Hold rating and $22-$24 target.
  
• Soleil started shares of GlobalSCAPE Inc (AMEX: GSB) with a Buy rating and $12 target, as they believe the company has the opportunity to grow revenues around 35%-40% annually and is an attractive acquisition candidate for suitors who address the corporate networking infrastructure marketplace.
  
• Cytrx Corporation (NASDAQ: CYTR) was initiated with a Buy rating and $6 target at Oppenheimer, as they are optimistic regarding the market potential of arimoclomol in amyotrophic lateral sclerosis and sees several catalysts approaching over the next 12-18 months.

OTHER INITIATIONS:

• Deutsche Bank started shares of Alliance Imaging Inc (NYSE: AIQ) and Pediatrix Medical Group Inc (NYSE: PDX) with Hold ratings and target of $10.50 and $70, respectively.
  
• Credit Suisse started shares of Accenture Ltd (NYSE: ACN), Genpact Limited (NYSE: G) and Cognizant Technology Solutions Corporation (NASDAQ: CTSH) with Outperform ratings and targets of $50, $20 and $53, respectively.