美股存储概念盘前普涨，SanDisk涨超3%

Group 1 - The core viewpoint of the article highlights a pre-market surge in the U.S. storage sector, with notable increases in stock prices for key companies [1] Group 2 - SanDisk experienced a rise of over 3% in its stock price [1] - Micron Technology and Western Digital both saw stock price increases of over 2% [1]