The world's most valuable ETF offers a low-cost way to invest in the entire U.S. stock market.

The Fidelity 500 Index Fund tracks the S&P 500 index, one of the main benchmarks for U.S. stocks. The index covers about 80% of the investable market capitalization of the U.S. equity market. The S&P ...

The Fidelity Spartan International Index Fund offers a low-cost way to get exposure to that asset class: It tracks the Morgan Stanley Capital International Europe, Australasia and Far East Index. As ...

Just over three dozen exchange-traded funds (ETFs) provide dedicated exposure to REITs, but in terms of size, it's the ...

Tom Lee, a veteran Wall Street strategist, says the S&P 500 could hit 15,000 by 2030.