Aluminum Corp of China (NYSE: ACH) volume & volatility spikes on wide price swings. ACH is engaged in bauxite mining, alumina refining and aluminum smelting. ACH is recently up $10.73 to $64.81. ACH closed at $37.04 on 8/16/07. ACH call option volume of 6,490 contracts compares to put volume of 4,671 contracts. ACH September option implied volatility of 88 is above its 26-week average of 47 according to Track Data, suggesting larger price risk.

Open Text (NASDAQ: OTEX) volatility Elevated at 80 into 8/30 EPS & Outlook. OTEX develops, markets, sells, and supports enterprise content management solutions. OTEX is recently down $0.29 to $19.98. OTEX will report EPS on August 30th. Canaccord Adams says: :We maintain our Hold recommendation and U.S. $18 target based on our Discounted Cash Flow analysis." OTEX September option implied volatility of 80 is above its 26-week average of 50 according to Track Data, suggesting larger risk.

Corus (NASDAQ: CORS) volatility elevated on exposure to commercial real estate. CORS is an active commercial real estate lender nationwide, specializing in condominium, hotel, office and apartment loans. CORS had outstanding commercial real estate loans and construction commitments of $8 billion as of 6/30/07. CORS over all option implied volatility of 60 is above its 26-week average of 49 according to Track Data, suggesting larger risk.

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