The share sale got bids for Rs 954 crore and the government will retain full over-subscription under the greenshoe option.
The greenshoe option is a special provision which allows sale of more shares than originally planned by the issuer.
Of its total holding of 74.58 per cent in Nalco, the government is offloading 5 per cent, or over 9.66 crore, shares at a floor price of Rs 67, which was estimated to yield about Rs 640 crore.
Over 1.93 crore shares have been reserved for retail investors, who will also be offered 5 per cent discount over the issue price. Retail investors are defined as individuals who place bids for sales of total value of not more than Rs 2 lakh in aggregate.
The stock was trading at Rs 68.45, up 1.03 per cent over its previous close, on the BSE.
National Aluminium Company Ltd (Nalco) is the first disinvestment of the current fiscal year, which started on April 1.
For this fiscal year, the government has set a target of Rs 46,500 crore through minority stake sale and Rs 15,000 crore from strategic disinvestment.
In 2016-17, the government had raised over Rs 46,247 crore from disinvestment.