'Lots Of Happy Bulls' Are Making This Wall Street Veteran Nervous: Signs That 'A Meltup Is Underway' - Invesco QQQ Trust, Series 1 (NASDAQ:QQQ), NVIDIA (NASDAQ:NVDA)
Wall Street's unstoppable bull run raises concerns for market observers, including Ed Yardeni. Optimism and complacency could lead to a 'meltup'.