iSpot.tv, which tracks national TV ads and correlates digital responses, announced $21.9 million in Series B funding.
The iSpot.tv platform shows where and when national TV ads are running in real time and how each spot generates a digital response on Facebook, Twitter, YouTube or other associated media.
"Brands want to become more responsive with their TV campaigns, and our data is the first stop," said iSpot.tv founder and chief executive Sean Muller. "TV is changing rapidly, and we are excited to bring on investment partners that share our vision for the future of TV and its measurement."
The investment was led by New York-based Insight Venture Partners. "We invest in transformative companies, and iSpot has proven they are a clear leader in their market," said Brad Twohig, Insight's principal.
Since its launch in 2012, iSpot.tv has grown to more than 150 clients, including blue-chip brands, agencies and TV networks. It claims to have the world's largest TV advertising website with a library of more than 100,000 TV ads and more than 5 million monthly visitors.
Pitchbook now pegs iSpot.tv's valuation at $129.62 million.