PEAK6 Investments

PEAK6 is a private investment and technology company whose activities span trading, financial technology, insurance and strategic investments. Founded in 1997 by Jenny Just and Matt Hulsizer, the business began as a proprietary equity options trading operation in Chicago before expanding into a diversified group of technology-focused companies and investments. PEAK6 now operates internationally and uses capital generated from its trading activities to support businesses and emerging technologies across several sectors. The company joined Form Energy's Series G financing round in August 2026 as a new investor, adding long-duration battery technology to a portfolio that has historically focused heavily on financial services and technology.