What type of companies does a Semi-Conductor ETF invest in?

A Semi-Conductor Exchange-Traded Fund (ETF) specifically targets companies that are involved in the semiconductor industry. This includes firms that design, manufacture, and sell semiconductors, which are essential components used in a wide range of electronic devices, including computers, smartphones, and many other types of technology.

Investing in a semi-conductor ETF allows investors to gain exposure to the performance of the semiconductor sector as a whole. This sector can be critical to the technological landscape, making it an attractive investment area for those looking to capitalize on innovations in electronics, computing, and telecommunications.

The other options presented are distinct industries that do not overlap with semiconductors, which further justifies that the correct answer is indeed related to the semiconductor industry specifically.