Grabbing a spot on Crain’s Fast 50 list in the recent past meant navigating a grueling, obstacle-course economy. Not so anymore.

With many markets looking bright, more New York City firms are taking a straight path to growth and racking up giant revenue gains. This year, every firm on our annual list of the fastest-growing privately held and publicly traded firms had revenue growth above 150% from 2010 to 2013. The list ranks New York area companies by revenue growth in that same period.

To make the Fast 50, firms needed four years in business and annual revenue of $10 million or more in 2013. We made some exceptions (noted). For firms with very low 2010 revenue, we used two-year growth.

No. 2: LiveIntent

Twitter handle@LiveIntent
Principals: Matt Keiser, CEO; Dave Hendricks, president
Headquarters: Manhattan
Three-year growth rate: 20,900%
2013 revenue: $21 million

Profitable? No

Local employees: 115

Total employees: 125

What it does: Offers email advertising services

How it grew: LiveIntent makes it easier for marketers and publishers to place ads in email newsletters. It acts as an intermediary, with a technology platform that places promos in missives sent by more than 600 publishers, as well as in a client’s own newsletter. And the firm’s real-time ad exchange enables split-second decisions about the right ad to place, based on such factors as the reader’s location and the time a newsletter is sent.

The result is a way for advertisers to reach a more targeted audience and for publishers to turn email newsletters into more efficient revenue generators.

Access to an extensive inventory of advertising space has helped LiveIntent grow since it was founded in 2009. “Nobody has the inventory that LiveIntent has,” said customer Amy Bartle, director of media and digital marketing for La Quinta Management.

Investors have taken note: The company has raised $32.6 million in three rounds of venture-capital financing.

Anne Field

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