$NDX -1.5% intraday on Fed day, how does it close? Last twenty cases (most recent first): +0.4%, -2.8%, -1.7%, -1.3%, -2.3%, -0.8%, -2.5%, -1.0%, -1.6%, -1.4%, -0.8%, +0.4%, -2.4%, -1.8%, -2.4%, +1.5%, +1.5%, +0.1%, -3.3%, +0.4%. Last time w/ +1% gain was 2002/03