Social ad targeting firm 33Across raises $13.1M

33Across, an ad tech startup that uses vast amounts of social data to target audiences, has raised an additional $13.1 million. The Series C round, led by new investor Pelion Ventures and including current investors Flybridge Capital, Greycroft Partners, First Round Capital, iNovia Capital, Panorama Capital, QED Investors, Metamorphic Ventures, and Great Oaks Ventures, brings the company's total funding to more than $26 million.

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