Reddit wants to take digital ad market share away from Facebook and Google. : What do Sen. Kamala Harris, Toyota, Charles Schwab and Jordan Peele's new movie "Us" all have in common? They all turned to Reddit to deploy ad campaigns and connect with consumers. The social network's growth in popularity with a broad range of advertisers has attracted new investors and is driving up its valuation. The company announced Monday it has raised $300 million at a $3 billion valuation. That's up from a $1.8 billion valuation when the company took in a $200 million in investment in 2017.