While dismissing several orders passed by the Securities and Exchange Board of India (SEBI) in the National Stock Exchange (NSE) colocation matter, the Securities Appellate Tribunal (SAT) has asked the regulator to refund Rs72.58 crore with interest deposited by NSE, Way2wealth Brokers Pvt Ltd and GKN Securities. SAT also dismissed SEBI's prohibitory orders against Chitra Ramkrishna, former managing director and chief executive officer (MD&CEO) of NSE, Ravi Varanasi, Nagendra Kumar and Devi Prasad Singh, all top executives of the Exchange and MR Shashibhushan, Sonali Gupta, Omprakash Gupta and Rahul Gupta.