What does the asterisks symbol * on a stock mean?
The asterisks symbol is added to stocks that are undergoing an open-market buyback. The * symbol is only added on BSE and the scrip name on NSE remains unchanged.
Although when you sell your holdings in the company you will not know who is purchasing at the other end, you can check the BSE scrip for the asterisks symbol to know if an open-market buyback is ongoing:
You can find the details of all stocks with ongoing or upcoming buybacks on the SEBI website.