原文:
An aside regarding the valuation of the S&P 500: A bit over half of its jaw-dropping 58% two-year total return in 2023-24 was attributable to the spectacular performance of just seven stocks, those of the so-called “Magnificent Seven” – Apple, Microsoft, Alphabet (parent company of Google), Amazon, Meta Platforms (parent company of Facebook), Nvidia, and Tesla. These are great companies – some are the best companies ever – and these seven stocks have grown to represent a startling one-third of the total market value of the 500-stock index. (Please bear in mind that I don’t claim to be an expert on stocks in general or tech stocks in particular.)
Because of these companies’ greatness, their stocks are highly valued, and there’s a popular perception that their elevated valuations are responsible for the S&P 500’s unusually high average p/e ratio. The fact is their p/e ratios average out to roughly 33. This is certainly an above average figure, but I don’t find it unreasonable when viewed against what I believe to be the companies’ exceptional products, significant market shares, high incremental profit margins, and strong competitive moats. (A lot of the Nifty-Fifty stocks First National City Bank owned when I got there in 1969 were selling at p/e ratios between 60 and 90. Now that’s high!) Rather, I think it’s the average p/e ratio of 22 on the 493 non-Magnificent companies in the index – well above the mid-teens average historical p/e for the S&P 500 – that renders the index’s overall valuation so high and possibly worrisome.