The Magnificent 7 entered 2025 among the Top 10 most extensive

The Magnificent 7 entered 2025 among the Top 10 most extensive US stocks. But before making an outsized bet on gains from these technology giants, investors should consider a few lessons from market history.

It’s challenging to stay ahead. For example, only three of the 10 biggest companies from 1980 made the 2000 list—and none of them were in 2025’s Top 10.

Industries ebb and flow. Technology-focused firms currently dominate the list. But in 1980, six of the 10 largest companies were in the energy sector.

New technology doesn’t benefit only tech firms. Throughout history, companies across various industries have leveraged technology to drive innovation and growth.