The US stock market is delivering a harsh lesson to investors. A large-scale analysis covering nearly a century — from 1926 to 2025 — and data on 29,754 companies reveals a shocking reality: the vast majority of securities have not generated long-term capital gains for their holders. Only 1,082 companies (approximately 3.7% of the total) generated all the net wealth of the stock market. The remaining stocks, on average, showed returns lower than those of short-term US Treasury bills, which are traditionally considered one of the most conservative instruments.
Looking at median values rather than averages paints an even more dismal picture. Half of all stocks depreciated by 6.9% over their history. The overall average growth of 30,000% is solely the achievement of a handful of giants that "pulled up" the statistics. This phenomenon, known as "extremely narrow market breadth," is currently more pronounced than ever.
Capital is Created by a Few
Just five companies have generated more than one-fifth of all the wealth created by the market since 1926. Apple leads with $5.02 trillion (about 5.5% of the total), followed by Nvidia with $4.58 trillion. The top five also include Microsoft, Alphabet, and Amazon. These tech giants, part of the so-called "Magnificent Seven," now control 24.2% of the total accumulated market capitalization.
The speed of capital concentration is staggering. As recently as 2018, it took 89 companies to generate half of the market's net wealth. Just nine years later, a similar amount of capital is concentrated in the hands of only 46 corporations. Meanwhile, the total market capitalization grew from $43 trillion to $91 trillion over this period. This dynamic coincided with the rapid growth of Big Tech and the triumphant march of artificial intelligence.
Conclusion for Investors
The key takeaway from this analysis has remained unchanged for decades: only a small group of companies consistently wins on the stock exchange. Trying to guess the next champion is an extremely risky endeavor. It is far more advantageous for investors to put their money into diversified index funds rather than trying to pick individual "golden stocks." The modern market is a field for patient strategists, not for hunters of quick profits.
Expert Comment: The data on the US stock market is a powerful argument in favor of passive investing and a clear warning for those who ignore the risks of concentration. In the world of cryptocurrencies, where volatility and the "winner effect" are even more pronounced, this lesson takes on particular significance. Choosing individual assets without deep analysis and diversification is a direct path to capital loss.