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Yellowhammer is developing the world's first online "Performance Trading Platform" for advertisers who want their online media buying to operate at the intersection of branding and direct response. Its data-driven approach to creative optimization has enabled rapid growth for Yellowhammer in the real-time bidded exchange segment of the online advertising market.

2013 Agency 100 Rank: 1

3-year Growth: 6,740%

Year Founded: 2009

Website: www.yhmg.com

Twitter: @yellowhammermg

Location: New York, NY

Check out the complete Agency 100 list.

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