IG Group Holdings is a London-based company with a global presence. The Group consists of a number of market-leading brands, including IG Index – the world's longest-running and largest financial spread betting firm.

IG Index was founded in 1974 to enable people to trade the price of gold as an index rather than trading the commodity itself, making the market far more accessible and removing the prohibitive costs surrounding commodity trading. Thus 'Investors Gold' Index was born. The name was soon shortened to IG Index, paving the way to introduce a wide range of other products over the years ahead.

The company expanded rapidly, underpinned by market-leading technology which supported round-the-clock client trading. IG Index became the first spread betting firm to introduce online dealing in 1998, capitalising on the emergence of the internet and an increased awareness of investment products.

The company became IG Group in 2000.

IG Markets, IG Markets Japan and Nadex were all added to the Group as it continued to grow and it is now one of the UK’s top 200 firms and is listed on the FTSE 250. The Group has also developed internationally, opening ten offices across the world during the past five years.