iShares Defense Industrials and Tech Active ETF (IDEF)

The iShares Defense Industrials and Tech Active ETF is an actively managed fund from BlackRock's iShares. It invests in companies involved in defense and related industrial and technology activities, such as aerospace and defense manufacturers and firms supplying technology used in national security.

Rather than tracking an index, the fund's portfolio managers select holdings based on their own research, which allows them to adjust the portfolio's mix across defense contractors, industrial suppliers and technology providers. The fund's holdings can include companies from the United States and other countries, giving it a thematic focus on the defense sector and the businesses that support it.