Thailand's stock market rocketed 10.76 per cent after a surprise move by the senate to approve a bill to create a bankruptcy court.
'The lower house passed this a few weeks ago and the consensus was that the upper house would throw it out or it would be amended beyond recognition,' Salomon Smith Barney head of Thai research James Mitchell said.
The news did not reach the market until the last hour of trade, providing an explosive end to the day.
Led by banks, the benchmark index gained 33.78 points to 347.43.
'It's the banks and finance stocks that went ballistic,' Worldsec International research analyst Andy Lush said.
'It was quite remarkable during the afternoon how news of this started to seep out from senate . . . the increase in the index and in volumes was quite substantial.
'However we would say be careful because this is just the bankruptcy court bill.