Nvidia, Micron, Tesla, SanDisk dominate US trading volume; SanDisk details NAND roadmap

Nvidia leads at 3.0% of total notional volume YTD, followed by Micron (2.8%), Tesla (2.1%), and SanDisk (1.5%). The top 10 stocks account for 16.4%. Some of these names show thinner liquidity than the average S&P 500 stock: SanDisk's bid-ask spread is 12.4 basis points vs 5.9 bps average; Tesla, Microsoft, and Alphabet also have smaller average order sizes at the best bid and offer. Separately, SanDisk announced its BiCS NAND roadmap delivered 54% more bits per wafer per generation across five nodes over nine years, a 27% average annual productivity gain.