Lightbank is a financial organization that specializes in making venture capital investments in "disruptive" technology companies in the United States including seed investments, Series A round and late-stage investments.  It combines investment with guidance and direct involvement with the companies it invests in. Unlike most investors in technology companies, it does not concentrate its investments in Silicon Valley, but prefers to have a presence across the United States. It was founded by Brad Keywell and Eric Lefkofsky. It is headquartered in Chicago and it has made investments in companies in Chicago, New York City, Omaha (Nebraska) and the Bay Area.
 
Investments
Lightbank has invested in a number of companies including the deal-of-the-day website Groupon. In fact, Lightbank's Eric Lefkofsky and Brad Keywell are credited as co-founders of Groupon, along with principal founder Andrew Mason. Other Lightbank investments include Mediaocean, InnerWorkings, loyalty startup Belly, test preparation service BenchPrep and Qwiki.