The Shiller P/E ratio gives insight into how expensive the S&P 500 is by looking at earnings over the past decade. The only time the S&P 500 has been more expensive than it is now was during the ...

Palantir trades at 87 times sales -- the most expensive stock in the S&P 500 today, and among the priciest in the index's history. Of the 231 S&P 500 companies that have ever reached a price-to-sales ...

After posting three consecutive years of double-digit returns, only the eighth time it has happened since 1926, the stock market's most important index, the S&P 500 (SNPINDEX: ^GSPC), has had a slow ...