The stock gained 4.39 per cent to Rs 1,310 on BSE.
At NSE, shares of the company went up 4.29 per cent to Rs 1,309.70.
Amansa has increased its stake in Ceat to over 5 per cent by acquiring 1.17 per cent stake through secondary market purchase.
It has acquired 4,75,000 shares of the tyre maker constituting 1.17 per cent stake, thereby taking its overall stake in the firm to 5.19 per cent, Ceat said in a BSE filing yesterday.
Ceat manufactures radial tyres for a range of vehicles including buses, trucks, cars, bikes and scooters among others.