From US News:
In the past 12 months, the information technology sector has been one of the highest-flying components of the U.S. market. The semiconductor industry has been part of this growth, with the Philadelphia Semiconductor Index up 8.6 percent in the first half of the year.
However, concerns about a slowdown in the Chinese economy and earnings warnings by a few companies in the space forced the shares of many semiconductor firms lower in June and early July.