Singapore-based chipmaker Avago Technologies (AVGO) is shaping a flat base as the company posts accelerating profit and sales growth. The stock, a leader in the highly rated Electronics-Semiconductor/Fabless industry group, is shaping a flat base and is hovering just below a 65.93 buy point. Shares rallied above that level in after-hours trading Monday, after news that Avago will be added to the S&P 500 index.