Radhakishan S. Damani, the founder of DMart, made a major move yesterday by divesting a stake worth Rs.142 crore in VST Industries Ltd. The sale was executed through open market transactions by two of his investment arms. Derive Trading and Resorts Pvt. sold a 1.7% stake, translating to 2.62 lakh shares, at Rs.4,102 per share, …