According to Bitget market data, on July 21, U.S. stock markets opened with a collective rebound in AI semiconductor and crypto-related stocks. SanDisk (SNDK) rose 8.59%, Micron Technology (MU) climbed 7.75%, SK Hynix increased 7.38%, Marvell Technology (MRVL) gained 6.93%, Applied Optoelectronics (AAOI) was up 6.10%, and AMD rose 4.95%. As for crypto-related stocks, Circle (CRCL) surged 7.25%, Bitcoin mining company Bitdeer (BTDR) rose 5.45%, and MicroStrategy (MSTR) gained 3.49%. https://(wublock123.com)/news/us-stocks-open-ai-semiconductor-crypto-stocks-rebound-sandisk-up-8-65040