NEW DELHI: BSE today said it has become the world's fastest stock exchange clocking a median trade speed of six micro seconds.The bourse, also the oldest in Asia, is already the country's fastest exchange."BSE has become the fastest exchange in the world with a median response time of 6 micro seconds," its Managing Director and CEO Ashishkumar Chauhan said in a tweet.In a separate tweet, the exchange also said that it is now the world's fastest exchange.The bourse's high speed BOLT PLUS system is already the fastest trading platform in the country with a response time of 200 micro seconds for trade executed on it.The high speed or algorithmic trading refers to orders on bourses that are generated using high-frequency and automated execution logic.In late 2013, the BSE had upgraded its technology platform to BOLT PLUS, which is based on the global giant Deutsche Boerse's trading architecture.More than 900 brokers with over 1,00,000 branches and millions of retail investors are on the BOLT PLUS system.