The three Baltic stock exchanges weakened Wednesday, resulting in drops across the board at the close of trading, according to dpa. The NASDAQ OMX Tallinn exchange closed down 3.29 per cent, Vilnius was down 3.36 per cent and the smallest of the exchanges in Riga dipped 0.05 per cent. The Baltic Benchmark Index (BBI) which includes data from all three exchanges, closed down 3.40 per cent, at 311.25. Biggest losers of the day were Estonian cable communications company Starman, down 15.15 per cent, closely followed by Lithuanian alcoholic drinks manufacturer Vilniaus Degtine, down 15 per cent.