Question 1

What is the S&P 500?

Accepted Answer

The S&P 500 is a stock market index that tracks the 500 largest publicly traded companies in the United States, weighted by market capitalization — meaning larger companies (like Apple, Microsoft, or Amazon) carry more weight in the final number than smaller ones. It's considered the most representative gauge of the US economy and of global equities, and serves as a benchmark for thousands of investment funds worldwide.

Question 2

What moves its price?

Accepted Answer

The S&P 500 moves mainly on expectations about corporate earnings, the Federal Reserve's interest rate policy, US inflation and employment data, and overall risk sentiment in global markets. When the economy shows signs of strength and rates stay stable or fall, the index tends to rise; during periods of uncertainty — like recession risk or an aggressive rate hike — it tends to fall or become more volatile. Quarterly earnings from its largest components can also move the whole index given their outsized weight.

Question 3

How is it traded?

Accepted Answer

You can't buy the S&P 500 directly the way you'd buy a stock. The most common ways to trade it are through ETFs that track it (like SPY), contracts for difference (CFDs) offered by regulated brokers, or futures for more advanced traders. Each instrument has its own cost, leverage, and margin requirements, so it's worth comparing before choosing which broker to trade it with.

Indices — S&P 500

Market radar

Trading resources

Related news

About