There was no indication as to where most of that demand was in the $60-$66 per share indicative range for the IPO, said the people, who couldn't be named because details of the offering demand aren't yet public.

Alibaba, a Chinese e-commerce titan, declined to comment when contacted by Reuters.

At the top end of expectations, the Alibaba IPO would raise $21.1 billion, topping Facebook Inc's $16 billion listing in 2012 as the largest-ever technology IPO.

Alibaba, could set a new record for the world's biggest IPO if underwriters exercise an option to sell additional shares to meet demand - putting it as high as $24.3 billion, and overtaking Agricultural Bank of China Ltd's $22.1 billion listing in 2010.

The company launched its IPO on Monday and is expected to price the deal on Sept. 18.

Co-founder and executive chairman Jack Ma has spoken with investors in New York and Boston so far this week, presenting the company's growth strategies and addressing concerns over its corporate governance.

Alibaba has kept tight control over the IPO, leaving a vacuum at the helm of the group of banks managing the offering - a move that has led to a complicated arrangement and left some bankers complaining it has created additional layers of work, according to people familiar with the situation.

(Reporting by Jessica Toonkel and Olivian Oran in New York and Elzio Barreto in Hong Kong; Editing by Ian Geoghegan)

Stocks treated in this article : Yahoo! Inc., Softbank Corp, Agricultural Bank of China Ltd