Glancing at the performance of the shares in Australia on August 18, the S&P/ASX 200 Index futures contract for September delivery dropped 0.2% to 4,455, in the early morning in Sydney. There was a decrease of 1.6% in the Bank of New York Australia ADR Index.

Talking about the stocks of oil Companies on the New York Mercantile Exchange, the crude for September delivery climbed down 2.1%. The share price of Australia's second-largest oil and gas producer, Woodside Petroleum Ltd., mounted up 0.6%, with analysts upgrading its rating from hold to buy.

Now, shifting the focus to mining Companies, in Sydney, BHP Billiton Ltd. (BHP AU), the world's largest mining Company, plunged 4.4% to $38.42. Also, in New York trading the Company's ADR shed 2.9%. As told by BHP, for its takeover bid of Potash Corp. of Saskatchewan Inc., it has arranged $43 billion and won't require seeking shareholders for the same. The shares of Rio Tinto Group advanced 2.8% to $73.45 in Sydney.

Analysts at Goldman Sachs & Partners Australia Pty degraded the Westfield Group's stock rating from hold to sell. Its stock gained 2.2% to $12.57. The stock of David Jones Ltd., a renowned departmental chain, went up 2.8% to $5.09. Suisse Group AG analysts altered its stock rating from underperform to neutral.

The stock of APN News & Media Ltd declined 0.6% to $5.32 and posted its half-yearly net income as $425 million.

APN News & Media Ltd slumped 8.5% to $1.875 and had credit rating rectified to outperform from neutral at Credit Suisse Group AG.