Are World's Stock Market might tumble due to US Credit downgrade by Standard & Poor's?

          The US Credit rating was downgrade to an AA+ by one of the three well-known credit rating agency, the Standard's & Poor this August 5. Others were Moody's Investor Service and Fitch stayed their AAA rating for the US last August 2.

          The United States of America was experienced a top rating since 1917 by an AAA rating and now down by one notch to AA+ rating. An unusual news for one of the big countries in the world.

            The impact to this downgrade rating might add on what was already been experiencing since this week from every business news. The equity markets from different part of the Asia, Europe, Africa, South America, Australia and North America faced red values and losses. The S&P 500 Index of US experienced a declined by -4.8% on August 4,2011 and the debt issue in the Eurozone.

          This is might I presumed that on the Monday trading of our local market may tumble. Or another world crisis might come again? What would you think?