Capital Index | 1,592 followers on LinkedIn. Capital Index is a global online brokerage specialising in CFDs, Financial Spread Betting and Spread Trading on a range of financial instruments including Foreign Exchange (FX), Commodities, Indices and Metals. With operations in the UK and the Bahamas the company is staffed by experienced traders and professionals with distinguished reputations in the financial market, offering in-depth knowledge, strong client focus and total commitment to ethical standards. They are supported by an advanced technical infrastructure that provides an outstandingly efficient, rapid online trading environment.