Wall Street's 2026 rally has broadened well beyond the megacap stocks that have dominated the market in recent years. But just as more stocks are joining the advance, investors are entering a period of the calendar that has historically been remarkably volatile during midterm election years.
The S&P 500 Equal-Weighted Index is up about 15% so far in 2026, outperforming the roughly 12% gain in the traditional S&P 500, according to Yahoo Finance. That gap is significant because the regular S&P 500 is weighted by market capitalization, giving giants such as the largest technology companies an outsized influence over its performance.
