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I was reading about risk in BTST if seller won’t able to deliver stock.

How we can get sure that we are going to get shares for particular stock.

Does BTST risk is for all stock or just for low liquidity stock.

Can someone explain in details.

generally there is no risk in BTST even for an illiquid stock also. If the stock is constituent of any Index or fall under A, or B group of BSE, then chances of short delivery will be zero. For other stocks also, it is very less. In my 7-8 years of trading, short delivery was there only 2-3 times.