Shares of Vodafone Idea Ltd. opened 7.20% premium over the issue price, at Rs 11.90 apiece on Thursday after its follow-on public offer shares listed on the bourses. The scrip had closed 9.03% lower at Rs 13.10 on Wednesday. The telecom-operator board approved the issue price of Rs 11 per share for its Rs 18,000-crore follow on public offer.