Vertex projects bought 3.12 crore shares for a value of Rs 29.69 crore, GVK Power & Infrastructure said in a regulatory filing.
After the share purchase, Vertex Projects stake in the company rose to 10.88 per cent from 8.91 per cent, it added.
The shares were purchased on April 16 on NSE, it said.
Shares of GVK Power & Infrastructure were trading at Rs 9.03 a piece, down 1.53 per cent, in the afternoon trade on the BSE.