Vanguard's Russell 1000 Growth ETF has outperformed the S&P 500 over 15 years. See how steady contributions and compounding-not stock picking-can drive long-term results, and what risks come with tech-heavy funds like VONG
For investors aiming to build significant wealth over decades, research from J.P. Morgan Asset Management and Vanguard's investor education consistently points to a simple formula: invest regularly in a low-cost index fund and let compounding do the heavy lifting. Rather than trying to outsmart the market or pick winning stocks, the data shows that steady contributions to a diversified fund have historically produced stronger results for most people.
The Vanguard Russell 1000 Growth ETF (VONG) is a case in point. Over the past 15 years, VONG has delivered an annualized return of about 16%, outpacing the S&P 500 and drawing attention from long-term investors. The fund's portfolio is packed with large-cap growth names that dominate many U.S. equity accounts, including Nvidia, Apple, Alphabet, and Broadcom. Technology stocks make up more than half of VONG's holdings, with communication services accounting for another sizable share.
The Power of Compounding
What does this mean in practical terms? According to calculations using the Investor.gov compound interest calculator, a $10,000 initial investment in VONG, with $100 added each month, could grow to roughly $1.2 million over 30 years if the fund achieves a 15% annualized return. While that figure is slightly below VONG's historical average since its 2010 launch, it illustrates how the bulk of long-term gains come from compounding-not from the amount invested. In this scenario, only about $46,000 would come from the investor's own contributions, with the rest generated by growth over time.
Vanguard's own educational materials emphasize that starting early and contributing consistently-even in volatile markets-are the most effective ways to harness compounding. The fund's low expense ratio of 0.06% means investors keep more of their returns, paying just $0.60 per $1,000 invested each year. VONG's portfolio turnover rate is also low at 10%, compared to the 73% average for similar large-cap growth funds, which can help minimize trading costs and taxes.
What's Inside VONG
VONG tracks the Russell 1000 Growth Index, which includes many of the most influential U.S. companies. As of the latest disclosure, Nvidia represented about 13.8% of the fund, Apple 6.7%, Alphabet's share classes 11.1%, and Broadcom 5.2%. Technology and AI-related stocks dominate the portfolio, making it highly concentrated in sectors that have driven much of the market's recent gains. This concentration can be a double-edged sword: while it has fueled strong returns, it also means the fund is more exposed to downturns in tech and communication services.
Morningstar awarded VONG a Gold Medalist Rating as of May 31, 2026, reflecting strong scores on factors linked to future outperformance. But not all growth ETFs are created equal. Index providers use different criteria to define "growth," and VONG's underlying index incorporates price-to-book ratios alongside traditional growth metrics, which can help filter out some of the most overvalued stocks.
Risks of Concentration
While VONG's performance has been impressive, its heavy tilt toward technology and AI stocks introduces concentration risk. If these sectors experience a prolonged slump, VONG could underperform more diversified funds. According to reporting by Financial Sumo, the dominance of mega-cap tech stocks in major indexes has reached historic levels, with the so-called "Magnificent Seven" now accounting for over 40% of the S&P 500. This level of concentration can amplify both gains and losses, depending on market conditions. VONG's forward price-to-earnings ratio has declined from 31 in late 2025 to about 25 by mid-2026, but valuations remain elevated compared to historical norms.
J.P. Morgan Asset Management's study of the Russell 3000 Index from 1980 to 2020 found that about 40% of individual stocks delivered negative absolute returns, and roughly two-thirds underperformed the index over four decades. This underscores why broad-based funds like VONG can be a more reliable way for most investors to participate in market growth without the risks of picking individual winners and losers.
Long-Term Discipline
VONG's track record highlights the value of sticking to a disciplined investment plan. Investors who contribute regularly and avoid reacting to short-term volatility have historically benefited most from compounding. Missing just a handful of the market's best days can significantly reduce long-term returns, according to J.P. Morgan's Guide to Retirement. While no fund delivers a steady return every year-VONG experienced setbacks in 2022 and lagged the S&P 500 in 2023-2024-its long-term results show that growth-oriented index funds can recover from downturns and outperform over full market cycles.
For those considering a growth ETF, it's important to understand the underlying index, sector exposures, and potential risks. Identical contribution schedules can produce very different outcomes depending on the fund's holdings and market conditions. As always, suitability depends on your time horizon, risk tolerance, and financial goals.
Index investing and sector concentration are recurring themes in today's market. For a deeper look at how AI-driven stocks are shaping risk and opportunity, see this analysis of the real threats facing the current tech rally: AI stock rally faces risks beyond bubble fears.
According to Vanguard, the compounding math that drives long-term results applies to any low-cost, diversified index fund-not just VONG. But as the landscape of growth indexes evolves, investors should pay close attention to what's inside their funds and how those exposures align with their own financial plans.
Data from Morningstar shows that as of June 2026, VONG managed over $18 billion in assets, with a trailing 15-year annualized return of 16.1%. The S&P 500, by comparison, returned 12.9% annualized over the same period. VONG's expense ratio remains among the lowest in its category, and its portfolio turnover is well below the industry average, helping to reduce costs for long-term holders.
Index funds have become a cornerstone of U.S. retirement and brokerage accounts because they offer broad diversification, low fees, and transparency. But not all index funds are equally diversified. Growth-focused ETFs like VONG can deliver strong returns when their favored sectors are in favor, but they also carry higher risk if those sectors stumble. Investors should weigh the benefits of compounding and low costs against the potential for sector-driven volatility, and consider how a fund's holdings fit within their broader portfolio strategy.
