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ETF Overlap Tool: VUG vs MGK

Compare portfolio holdings overlap, mega-cap growth concentration, and expense ratio differences between Vanguard Growth Index Fund ETF Shares (VUG) and Vanguard Mega Cap Growth Index Fund ETF Shares (MGK).

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ETF Overlap Overview & Key Metrics
VOO (503 Total) QQQ (101 Total) ONLY IN VUG 8 Stocks (53.6% Weight) MODERATE HOLDINGS OVERLAP 41 Shared Stocks (82.0%) 81.3% Weight Duplication ONLY IN MGK 9 Stocks (53.6% Weight)
Overlap by Weight
81.3%
⚡ High Growth Overlap
Expense Ratio Gap
0.04% vs 0.07%
VUG is 1.8x cheaper than MGK
Unique Holdings
419 vs 17 Stocks
~53.6% Weight Difference
Sector Allocation Breakdown
Information Technology
56.32%
Communication Services
15.45%
Consumer Discretionary
11.5%
Industrials
4.81%
Healthcare
4.59%
Financials
4.14%
Consumer Staples
1.39%
Real Estate
0.98%
Materials
0.52%
Energy
0.3%
Information Technology
58.58%
Communication Services
16.6%
Consumer Discretionary
11.15%
Healthcare
4.79%
Financials
4.38%
Industrials
2.42%
Real Estate
1.25%
Materials
0.42%
Consumer Staples
0.41%

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Stock Holdings Breakdown (VUG vs MGK)

73 Assets
Asset Sector VUG Weight MGK Weight Combined (50/50) Status
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Showing 1 to 20 of 73 holdings

VUG vs MGK: Portfolio Overlap & Investment Strategy Guide

When evaluating Vanguard Growth Index Fund ETF Shares (VUG) versus Vanguard Mega Cap Growth Index Fund ETF Shares (MGK), investors are comparing two distinct ETF strategies. VUG holds 0 total assets while MGK contains 0 total assets. Across both portfolios, they share 41 common stock holdings, representing a 81.3% portfolio overlap by weight.

Sector Concentration & Shared Stock Holdings

While both funds invest in equity markets, their internal sector allocations create meaningful differences in portfolio performance and volatility:

  • Primary Sector Focus: VUG concentrates its largest allocation in Information Technology (56.32%), whereas MGK allocates its highest weighting to Information Technology (58.58%).
  • Top Shared Holdings: Key overlapping stocks held in both funds include NVIDIA Corporation (NVDA), Apple Inc (AAPL), Microsoft Corporation (MSFT), Alphabet Inc (GOOGL).
  • Holdings Distribution: VUG features 0 holdings compared to 0 holdings in MGK, affecting single-stock concentration risk.

Strategic Portfolio Insight: High Overlap & Concentration Risk

Holding both VUG and MGK results in significant portfolio duplication with a 81.3% weight overlap. Because a major portion of performance is driven by identical holdings across both funds, owning both simultaneously creates high redundancy without providing meaningful diversification.

Expense Ratio Comparison & Performance: VUG vs MGK

Beyond portfolio holdings overlap, fund management fees, dividend yields, and sector diversification play a vital role in long-term compounding returns:

1. Annual Management Fee Impact

VUG charges a lower expense ratio of 0.04% compared to MGK at 0.07%. VUG is 1.8x cheaper, saving long-term investors approximately $3 per year for every $100,000 invested.

2. Volatility, Risk & Long-Term Growth Potential

VUG and MGK react differently to changing interest rates, market cycles, and sector rotations. Diversifying across funds with different underlying indexes helps reduce portfolio drawdown risk during broader market corrections.

Snowball Portfolio Lab Insight

Want to analyze how combining VUG and MGK impacts your total portfolio yield, sector distribution, and historical dividend income? Model your custom asset allocation in the Snowball Analytics Portfolio Lab.

Frequently Asked Questions: VUG vs MGK ETF Overlap
What is the portfolio overlap percentage between VUG and MGK?
Vanguard Growth Index Fund ETF Shares (VUG) and Vanguard Mega Cap Growth Index Fund ETF Shares (MGK) have a 81.3% overlap by weight and share 41 identical stock holdings. VUG holds 0 total assets while MGK holds 0 total assets.
What is the main difference between VUG and MGK?
The main difference between VUG and MGK lies in sector allocation, expense ratio, and portfolio breadth:
  • Sector Focus: VUG's largest sector is Information Technology (56.32%), whereas MGK's largest sector is Information Technology (58.58%).
  • Expense Ratio: VUG has an expense ratio of 0.04%, while MGK charges 0.07%. VUG is 1.8x cheaper than MGK.
  • Portfolio Breadth: VUG holds 0 total stocks vs MGK's 0 stocks.
Is it good to hold both VUG and MGK in the same portfolio?
Holding both VUG and MGK results in a 81.3% portfolio weight overlap across 41 common holdings. Because VUG and MGK have a high portfolio weight overlap of 81.3%, holding both creates significant redundancy. Investors often select one primary fund as a core asset rather than duplicating holdings.
Which ETF has lower management expense fees: VUG or MGK?
VUG has an expense ratio of 0.04%, while MGK charges 0.07%. VUG is 1.8x cheaper than MGK.
Which ETF is better for long-term investors: VUG or MGK?
The ideal choice depends on your investment strategy: VUG (0.04% expense ratio) provides exposure to Vanguard Growth Index Fund ETF Shares, while MGK (0.07% expense ratio) offers exposure to Vanguard Mega Cap Growth Index Fund ETF Shares. Comparing sector concentration and historical volatility helps align your choice with long-term goals.
Do VUG and MGK pay dividends?
Yes, both VUG and MGK pay quarterly dividend distributions to shareholders derived from underlying dividend payments of portfolio companies.