CARY –Cofounders Capital, a venture firm focusing on early stage startups launched in 2015, recently made its biggest investment to date: $1.3 million. The funds went to digital marketing startup marGo, also based in Cary. And the deal is much larger than the typical 6-figure investment made by the firm, which has raised $43 million in two funds since its launch by serial VC David Gardner. “This is our largest initial investment we’ve ever made,” declared Cofounders partner Tim McLoughlin, who joins the marGo board as part of the deal. So why such a big investment? “The Direct Sales...