The domestic follow-on public offer (FPO) of ICICI Bank has been subscribed 3.10 times till 1400 hrs today, according to data on the website of the National Stock Exchange.Total bids of 30.64 crore shares have been received as against the offer size of 9.88 crore shares.The stock was trading with a marginal gain of Rs 5 at Rs 949 at 1440 hrs.