Lam Research (LRCX) shares ended the last trading session 5.2% higher at $826.32. The jump came on an impressive volume with a higher-than-average number of shares changing hands in the session. This compares to the stock's 1.1% gain over the past four weeks.Lam Research extended its rally, driven by its strength across 3D DRAM and advanced packaging technologies. Further, growing etch and deposition intensity owing to increasing technology inflections in 3D architectures, is a positive. The company's techn ...