The SOX Shuffle: When Index Changes Signal More Than Just Math The Philadelphia semiconductor index, or SOX, has been on a tear lately.
This week's annual reconstitution brought four new chip stocks into the fold, replacing four others. On its surface, the SOX's 3. 7% gain in afternoon trades seems like a minor blip.
However, these changes signal that the semiconductor industry is shifting gears. The SOX is more than just a mathematical construct; it's a gauge of the industry's pulse.