JSE recovering bit today

The JSE recovering quite a bit today :-). Not back Thursdays levels but recovering. So here from this observation, can we follow a trade strategy of buying on a Friday and selling on a Monday. I wonder if there are any theoretical background on this?

please note this is a live graph not reflecting the index as of 11.06.2007 :

here’s a little report on from wwww.psg-online.com

Gold firms, fickle markets bounce back (8.50am) 11 June 2007

In New York stocks rallied on Friday at the end of a tough week on Wall Street in which worries about inflation and rising interest rates sent the major indices tumbling for 3 straight sessions – on Tuesday, Wednesday and Thursday. The UK’s FTSE 100 index of leading shares pared losses in late choppy trade to end Friday’s session flat as rising US stocks soothed a market fretting over interest rates. European stocks inched lower on Friday, falling for a 5th straight day as worries over interest rates and rising bond yields lingered, but mergers and acquisition fever over a few bank stocks helped cushion the fall. Stocks across the Asia-Pacific region gained for the 1st time in 3 days after a report today showed Japan raised its 1st-quarter economic growth estimate. South Korea’s Kospi index was the only benchmark in the region to fall. Australia and the Philippines are closed today for holidays. The price of crude oil was little changed in New York after falling last week on increasing US stockpiles and speculation rising interest rates may slow commodity demand. Cash gold rose on Monday as bargain hunters lifted the metal from its lowest level in nearly 3 months that was hit on Friday, while Tokyo gold futures slipped to a 2-week low on a decline in New York COMEX gold. The Rand is slightly firmer in early trading today as at 08.40am

Investments on the Johannesburg stock exchange