PSI 20: going down 0,24% (21 August 2007)

Today PSI 20 went on another roller-coaster ride. In ended losing 0,24% after experiencing both: red and green during the session.
A perfect example was Sonae.com that went from gains of more than 3% ending at 4,08€ loosing 0,48%.
Altri on the other side kept rising during all the session(+1,88% at 5,95€) and it was in fact the highest rise of today.
The worst performer today was Banco Espírito Santo that ended at 29,08€ representing - 2,02% than yesterday.
At this moment (18:38 GMT) and after hovering the zero line, the US indexes are clearly in the green.