S&P 500 has officially hit a fresh record high today, quietly locking in one of the strongest wealth-creation stretches in U.S. market history. From the April 2025 lows, the benchmark index has added nearly $18 trillion in total market value. At midday, major indexes were hovering near historic highs in a shortened holiday session. The Dow Jones Industrial Average traded above 48,700, while the Nasdaq Composite remained slightly positive despite intraday volatility.