Stock index prices
Find data and news on the world’s major stock indices, all the information you need to spot a stock index opportunity and open a position.
View live prices on key indices. Select your market to view real-time prices, its chart and more.
Find your next trade
Discover opportunity on a new market every Sunday. Sign up to have our trade of the week delivered to your inbox for free, and watch our experts highlight potential trades on a commodity, forex pair, or stock.
Latest indices news
How are stock indices priced?
Stock indices are priced in a range of ways, based on the value of their constituents. A price-weighted index, for example, gives greater emphasis to the higher-priced stocks among its constituents. So the higher a constituent company’s share price, the more influence that company has on the index’s movement.
By contrast, a capitalisation-weighted index gives emphasis to the companies among its constituents with the highest market capitalisation – or rather, the market value of their outstanding shares.
At IG, we base our index market prices on futures contracts in the underlying market.
What influences stock index movement?
The price of a stock index is influenced by a range of factors. As a collection of share prices, perhaps the most obvious factor that affects index movement is the price of its constituent stocks. However, indices are also affected by a range of economic and political events.
You might be interested in…
Find out more about how we can help your index trading, with low margins, competitive spreads and more 24-hour markets than anywhere else.
Choose from our easy-to-use web platform, apps for trading on the move, and advanced options for experienced traders.
Become a better stock index trader with the free, interactive courses on IG Academy.