Hartford Holding Company, LLC. - HARTFORD HOLDING … EQUITIES. Hartford Holding Company acquires small-cap, mid-cap, and large-cap businesses with fixed-income components on the stock market. HHC also invests heavily in publicly-traded Real Estate Inves EQUITIES. Hartford Holding Company acquires small-cap, mid-cap, and large-cap businesses with fixed-income components on the stock market. HHC also invests heavily in publicly-traded Real Estate Investment Trusts (REITs), which …