GVK Power & Infrastructure on Friday said its step-down subsidiary GVK Airport Holdings will acquire 12 crore shares of Mumbai International Airport (MIAL) for ₹924 crore from ACSA Global. After the stake-buy, GVK group's shareholding in MIAL will increase to 74 per cent from the existing 50.5 per cent. Earlier, the company had acquired 13.5 per cent stake from Bidwest. Shareholders of GVK Power & Infrastructure will closely monitor further developments.