(adds later sale)
PARIS, Aug 21 (Reuters) - The AMF French financial markets watchdog said that Societe Generale had taken a stake of 7.82 percent in French car parts group Valeo on Aug. 15 due to its trading activities
AMF added that on Aug. 18, Societe Generale had sold shares again and the stake was reduced to 4.61 percent.
(Reporting by Marcel Michelson)