Why is the S&P 500 rising?

Short answer

The S&P 500 usually rises when big companies beat earnings expectations and when investors expect interest rates to fall.

What happened

The S&P 500 closed higher, with megacap tech and consumer names doing most of the heavy lifting.

Why it happened

Just a handful of huge companies — Apple, Microsoft, Nvidia, Amazon, Meta, Google — drive most of the index's moves. When their earnings or AI news are positive, the index goes up.

Why investors care

The S&P 500 is the world's most-tracked index. Retirement funds, ETFs and pensions everywhere are benchmarked to it.

How it affects ordinary people

If you own an S&P 500 ETF or a global ETF, your balance grew a little. Even non-US investors are affected because the S&P sets the global tone.

FAQ

How many companies drive the S&P 500?

Around 10 megacap stocks account for over a third of the index's value, so they have outsized influence on daily moves.