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.

MOST NOTEWORTHY: GSI Technology, Array Biopharma and Continental Resources were today's noteworthy initiations:

• Merriman believes GSI Technology Inc (NASDAQ: GSIT) is positioned to benefit as growing bandwidth demand and increasingly complex protocols drive the need for faster and higher density memory in networking equipment. The firm started shares with a Buy rating.
• Array Biopharma Inc (NASDAQ: ARRY) was assumed with an Outperform rating at William Blair. The firm thinks the company's pipeline contains significant value, which will be catalyzed over the next 12-18 months by continued clinical progress and potential partnerships.
• Continental Resources Inc (NYSE: CLR) was initiated with a Buy rating and $30 target at Jefferies, and points to the company's double-digit growth and strong reserve growth potential.

OTHER INITIATIONS:

• Lehman initiated Ventas Inc (NYSE: VTR) with an Equal Weight rating $46 target and HCP Inc (NYSE: HCP) with an Overweight rating.
• The Boston Beer Company Inc (NYSE: SAM) was assumed with an Overweight rating and $43 target at HSBC.

Readers of this space know that one argument forwarded here is that in the era of elevated energy prices oil/natural gas companies are likely to remain promising plays for the foreseeable future, barring the discovery of a cheap, widely-available, alternative energy. And among oil/natural gas companies, Continental Resources is worth a review.

Continental Resources, Inc. (NYSE: CLR) searches for oil/natural gas beneath the North American continent, in the Rocky Mountain, Mid-Continent, and Gulf Coast regions.

Analysts like the fact that CLR has added reserves of 96.2 million barrels of oil equivalent via growth during 2001-2006. The company has proven reserves totaling 118.3 million barrels of oil equivalent, 1,172 drilling locations and 737,000 acres of leasehold properties.

MOST NOTEWORTHY: CAI International (CAP), ATS Corp (ATCT), Logitech International (LOGI) and Wireless Ronin (RNIN) were today's more noteworthy initiations:

• Piper Jaffray started CAI International (NYSE: CAP) with an Outperform rating and $18 target, believing the company is well positioned to capitalize on global trade growth. Jefferies started CAI Int'l with a Buy rating and $17 target.

• CRT Capital believes ATS Corp's (NASDAQ: ATCT) risks are offset by positive long-term fundamentals of the federal IT services sector and the company's experienced management team and started shares with a Buy rating and $5 target.

• Pacific Crest started Logitech International (NASDAQ: LOGI) with a Sector Perform rating based on valuation.

• ThinkEquity believes that Wireless Ronin Technologies (NASDAQ: RNIN) is exposed to one of the biggest open-ended growth opportunities in digital media today with its RoninCast application and started shares with a Buy rating...

OTHER INITIATIONS:

• Leerink Swann started Insulet Corp (NASDAQ: PODD) with an Outperform rating.

• Goldman started Essex Property Trust (NYSE: ESS) with a Neutral.

• Deutsche Bank and JP Morgan started Continental Resources (NYSE: CLR) with an Overweight rating, while Merrill Lynch started Continental Resources with a Buy rating.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).