Vanguard Mega-Cap Growth ETF (MGK) holds a highly concentrated portfolio of 127 stocks, with the top 10 positions accounting for approximately 65% of assets. As of December 31, 2025, its largest weightings include Apple (11.4%), Microsoft (10.8%), Amazon (9.6%), Nvidia (7.2%) and Alphabet (6.9%). The fund’s focus on mega-cap technology and communication services names drives its growth orientation; these five sectors together represent roughly 80% of the ETF’s total net assets. MGK’s market-cap weighted methodology means that the fund’s performance is closely tied to the largest U.S. growth companies, creating potential for outsized gains during strong tech cycles but concentration risk if the largest names underperform.

MGK’s expense ratio stands at 0.07%, below the industry average for actively managed peers and materially lower than the 0.16% charged by SPDR Dow Jones Industrial Average ETF (DIA). With net assets of $27.3 billion, MGK ranks among Vanguard’s largest growth ETFs. Investors should note the fund’s 12-month trailing distribution yield of 0.45%, compared with DIA’s 1.75%. While MGK’s lower yield reflects its growth focus and limited exposure to dividend-paying value names, the reduced fees enhance long-term total return potential for growth-oriented portfolios.

Over the past three years through January 2026, MGK has delivered an annualized return of 21.8%, outpacing the S&P 500 Growth Index’s 19.3%. However, its standard deviation of 24.2% exceeds the broad market’s 17.6%, reflecting higher volatility driven by concentrated mega-cap positions. In periods of sharp market pullbacks—such as the 7.6% drawdown in June 2024—MGK declined more steeply than diversified benchmarks. Investors should weigh MGK’s strong growth track record against the potential for larger swings during sector rotations away from technology.

Looking ahead, MGK’s performance will hinge on the earnings trajectory of dominant growth names, particularly in artificial intelligence and cloud computing. Vanguard projects earnings-per-share growth of 12–15% for the fund’s top five holdings in fiscal 2026. With interest rate expectations moderating, valuation multiples could expand further for technology leaders, benefiting MGK. Nonetheless, investors must consider concentration risk, low income generation and the potential for sector rotation into value-oriented assets should inflationary pressures reemerge.