Tunis: Tunindex closed Wednesday's session slightly down by 0.01% to 9,492.4 points with a heavy volume of TND 10 million, said broker Tunisie Valeurs.The stock market has posted a good 8.5% performance since the start of the year.ONE TECH HOLDING shares were the best performers after rising by 4.4% to TND 8.140, feeding the market with a capital of TND 876,000 and becoming one of the most dynamic on the market.DELICE HOLDING shares were the most active during the session. The stock price edged up 1.3% to TND 11.850.SMART TUNISIE shares also performed well, rising by 3.7% to TND 17 and generating TND 131,000.CELLCOM shares fell by 4.2% to TND 2.070, with a low volume of TND 1,000.ATB shares also dropped by 3.4% to TND 3.140, generating only TND 95,000.Source: Agence Tunis Afrique Presse