DuPont Fabros is a mega operator of wholesale data centers.

When it talked to upstart Facebook, there was actually some skepticism. Would Facebook hit critical mass? Well, DuPont took a bet on the company - and it's certainly paid off.

In fact, DuPont has other top-notch customers, like Microsoft (NASDAQ: MSFT), Yahoo (NASDAQ: YHOO), and Google (NASDAQ: GOOG).

And, now DuPont has achieved another milestone; that is, the company went public today -- the ticker is "DFT". The company raised about $640 million.

DuPont focuses on long-term triple-net leases (which, of course, contain nice annual rental increases). A key differentiator is the focus on power capacity. Interestingly, part of the business model includes charging for power usage.

Although, there is signficant customer concentration. For example, about 86% of annualized rent comes from Microsoft and Yahoo.

So far today, shares of DuPont are up about 6.5% to $22.29.

Also visit DealProfiles.com if you want to check out other recent IPO activity.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements.

Internet 'plumber' DuPont Fabros raises $640 million in IPO originally appeared on BloggingStocks on Fri, 19 Oct 2007 14:45:00 EST. Please see our terms for use of feeds.