SEBI on Tuesday said it has set up a committee to suggest measures to improve market surveillance and prevent insider trading and manipulation. The regulator is currently probing instances of unfair trade practices, including the co-location case at NSE. The Committee on Fair Market Conduct will be led by the government’s former Law Secretary TK Viswanathan and includes members from law firms, forensic auditing firms, stock exchanges, data analytics firms and SEBI, a release from the regulator said. The committee is expected to submit its report within four months, SEBI added.