This ETF is comprised of stocks of various companies based in the technology sector of the market. PTF invests all of its assets in domestic securities, and its top holdings feature some of the biggest names in the tech sector, including Apple and IBM. The U.S. tech sector is one of the few left that is still exhibiting strong growth, while others have grown dormant. With new innovations year after year, an investment in a PTF will afford investors the opportunity to cash in on the inevitable forward momentum that the tech sector carries. What investors may fund surprising about this broad-based technology fund is that PTF spreads its assets across companies of various market cap sizes, with a bias towards those of medium capitalization.