UPDATE: The value of Interxion shares reached about 19% over their IPO price at the peak of their first day of public trading on the New York Stock Exchange.

INXN share value ranged between US$13.75 and $15.49 during the day.

This was a breaking news update. Following is our story published on 27 January, titled "Interxion ups IPO size in response to high demand":

Netherlands-based colocation provider Interxion increased the amount of shares it will put on the stock market in an Initial Public Offering. The increase from a previous plan to sell 18.6m shares to 20.4m shares came in response to high demand from investors, according to a Dow Jones Newswires report.

The company's shares are expected to start trading on the New York Stock Exchange on Friday under the symbol INXN. As of 27 January, the provider expected its publically traded stock to be priced between US$11 and US$13 per share.

Depending on how the shares are actually priced ÔÇô which reportedly is expected to happen on Thursday evening ÔÇô Interxion stands to raise up to US$354m from the offering.

There are 11 underwriters of the IPO, including Jefferies, Oppenheimer, Credit Suisse, RBC, Piper Jaffray and others. Offering book runners are Bank of America Merill Lynch, Citi and Barclays.

Interxion operates 28 data centers in 11 countries. Its total revenue for nine months ended 30 September 2010 was Ôé¼152.8m (about US 198m), with EBITDA of Ôé¼34.3m (about US$44.5m). Its full-year 2009 revenue was Ôé¼171.7m (about US$222.6m), with EBITDA of Ôé¼62.7m (about US$81.3m).