Vanguard 500 Index Fund Sees Mixed Technical Signals The Vanguard 500 Index Fund (VOO) closed at $529.39 on March 24, 2025, amid mixed technical indicators. While trading volume surged, bearish signals like a negative MACD and proximity to resistance at $530.50 suggest short-term challenges. However, its long-term fundamentals remain strong, reflecting broader market resilience.45