U.S. stocks rose this week, ending a losing run

U.S. stocks rose in the week ending Sept. 25, 2026, MarketWatch reported. The Dow — 30 big U.S. companies — gained 460 points, or 0.9%, to 51,810, ending three weeks of losses. The S&P 500, a wider mix, rose 0.5%. The Nasdaq, many tech companies, also rose, Investopedia reported. That lifts retirement accounts like 401(k)s, but gains can vanish fast.