The Vanguard Mega Cap Growth ETF (MGK) aims to replicate the performance of the CRSP US Mega Cap Growth Index. It achieves this through a passively managed, full-replication strategy, meaning it invests in all constituents of the index. This provides investors with a straightforward and diversified avenue to gain exposure to the largest, growth-oriented companies within the U.S. market. For 75% of its total assets, specific investment limitations are in place: the fund is generally prohibited from acquiring more than 10% of the outstanding voting shares of any single company. Additionally, it typically cannot invest more than 5% of its total assets in the securities of any one issuer, unless necessary to closely align the portfolio with the target index's composition. These limitations do not, however, extend to obligations issued by the U.S. government or its associated agencies and instrumentalities.