A new exchange-traded fund (ETF) has been launched that replicates the stock portfolios of some of the world's billionaires. This ETF aims to attract investors by emulating the strategy of Cathie Wood's ARKK ETF, which is known for its focus on innovative and high-growth companies. Market participants and promoters emphasize loyalty to the ETF and suggest that it has the potential to generate substantial returns. The ETF is referred to with the ticker $ZACK and is associated with the hashtag #ETF500, indicating a possible focus on a broad or diversified portfolio. The strategy promoted alongside includes a simple approach involving the SPY ETF.