U.S. stocks closed lower on Thursday, Aug. 21, with the Dow Jones Industrial Average down a preliminary 1.3%, the S&P 500 down 0.86% and the Nasdaq Composite down 1%. Moderna fell 23.5%, while Marvell Technology Group rose 5.8%. Memory-related shares broadly gained, including Micron Technology at about 4%, SanDisk at about 2% and Seagate Technology at 2.12%. Cryptocurrency-related stocks also advanced: MSTR rose 7.81%, CRCL 6.42%, COIN 7.58%, BMNR 6.62%, SBET 7.20% and PURR 7.35%, BlockBeats reported.