First Trust NASDAQ Cybersecurity ETF(NASDAQ:CIBR)

CIBR is a specialized fund focusing on cybersecurity companies as classified by the Consumer Technology Association(CTA), which means it holds primarily software and networking companies, but also branches out from the tech sector into more diversified industries like aerospace & defense. This slightly expanded focus is the major distinction between CIBR and other similar funds, most of which have small, tech-dominated portfolios. It weights holdings by liquidity, which makes sense given the funds small-cap exposure. It also caps the weighting of the securities of the five most liquid companies at 6% each, while the securities of the remaining companies are capped at 3%. The index is rebalanced quarterly.