Internal dealing regulation and insiders' trades in the Italian financial market

We analyze insiders’ trades in the Italian financial market. Insiders buy undervalued stocks, but they also act as positive feedback traders. They exploit short term market movements with abnormal returns around trades: they purchase (sell) stocks after a price decline (increase) and trades are followed by a partial reversal. They time the market mainly through purchases immediately communicated to the market and sales (and in part purchases) communicated quarterly to the market. It seems that insiders do not manipulate the market but strategically choose the size of trades, while they are interested to disclose immediately purchases of the assets of the company they prefer not to do it in case of sales.