[U.S. Stock Market Flat Ahead of Federal Reserve Rate Decision, Mixed Performance in Storage and Optical Communication Sectors, S&P 500 Hits Lowest Close Since August] BlockBeats News, September 16, according to BIT (bit.com) market data, the night before the Federal Reserve rate decision, the market was flat. U.S. stocks closed with the Dow Jones down 0.63%, the Nasdaq down 0.78%, and the S&P 500 index down 0.45%, marking the lowest close for the S&P 500 since August. In the U.S. semiconductor and storage sector: - Seagate Technology (STX) fell 4.10%; - Western Digital (WDC) fell 3.50%; - SanDisk (SNDK) fell 1.30%; - Micron Technology (MU) rose 0.39%; - NVIDIA (NVDA) rose 0.57%; - Intel (INTC) fell 0.05%; - Advanced Micro Devices (AMD) rose 2.19%; - Broadcom (AVGO) fell 1.58%. In the optical communication concept stocks: - Pure Photonics ETF (FOTO) fell 0.06%; - Marvell Technology (MRVL) rose 1.32%; - AAOI (Applied Optoelectronics) fell 0.49%; - LITE (Lumentum Holdings) rose 0.47%; - COHR (Coherent Corp.) rose 1.75%; - CIEN (Ciena Corporation) rose 4.60%; - FN (Fabrinet) fell 2.00%; - AXTI (AXT Inc.) rose 1.12%; - NOK (Nokia) rose 1.97%.