Valued at a market cap of $19.4 billion, NiSource Inc. (NI) is an energy holding company that provides natural gas and electricity services. The Merrillville, Indiana-based company is also investing heavily in modernizing infrastructure, upgrading electric transmission and distribution, deploying cleaner energy sources, and maintaining strong regulatory relationships. Companies worth$10 billion or more are typically classified as “large-cap stocks,” and NiSource fits the label perfectly, with its market ...