The shares on offer for the public got subscription worth Rs 46,298.34 crore, which along with shares worth Rs 1,635 crore already allocated to anchor investors, have taken the total bid amount to Rs 47,933.34 crore.
The public issue got million plus applications - third in 2016-17 after Larsen & Toubro Infotech and RBL Bank.
The IPO received bids for 1,38,58,52,468 shares against the total issue size of 13,23,78,973 shares, data available with the NSE till 1930 hrs showed.
Retail portion was oversubscribed 1.37 times and ICICI Bank shareholders 12.20 times.
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The offer is scheduled to close today and is being offered in a price band of Rs 300-334 per share.
Ahead of the IPO, ICICI Prudential allocated over 4.89 crore shares at Rs 334, the top-end of the price band, aggregating Rs 1,635.33 crore to a clutch of anchor investors.
The public offer comprises of up to 18,13,41,058 equity shares of ICICI Prudential Life Insurance Company, including a reservation of up to 1,81,34,105 equity shares (10 per cent of the offer) for shareholders of ICICI Bank.
At the upper end of the price band, the offer is worth Rs 6,057 crore.
This is the biggest initial public offering after Coal India, which had hit the capital markets in 2010 to raise over Rs 15,000 crore.
The company, which filed the draft red herring prospectus with Sebi on July 18, got the regulator's go-ahead on September 2.
The insurer is a venture between banking major ICICI Bank and UK's Prudential Corporation Holdings. Singapore's Temasek and PremjiInvest also are shareholders.
ICICI Bank has around 68 per cent stake in the insurer, while Prudential has 26 per cent.
PremjiInvest holds 4 per cent in the insurance company while Temasek owns 2 per cent.
DSP Merrill Lynch and ICICI Securities are global coordinators and book running lead managers to the issue. Others are CLSA, Deutsche, Edelweiss, HSBC, IIFL, JM Financial, SBI Capital Markets and UBS.