FierceMarkets, the Washington, DC-based online and e-mail newsletter trade publisher, has been bought by B2B media and events company Questex Media Group. No financial details were disclosed.

Fierce is the publisher of vertical newsletters such as FierceWireless (its first newsletter), FierceIPTV, and FierceHealthcare for a total of about 20 newsletters. The Washington DC-based company was founded in 2000 and has expanded into events and 19 online news sites as well, beyond the e-mail newsletters...we understand the company had some angel money invested in it. Founrder and president Jeff Gisea will continue to run FierceMarkets as a subsidiary of Questex.

Questex was formed in 2005 from five former divisions of B2B company Advanstar, and is backed by Boston-based PE firm Audax Group. Release.

Updated: Folio has some details on the company’s revenues: FierceMarkets, which officially went on the block this past summer, did more than $5.2 million in revenue in 2007 and is profitable, and boasts 45 percent compound annual growth over the last five years, the story says, without citing its source.

• FierceMarkets keeps it in ‘vertical families’