What is the main structural difference between SPYM and VTI?

SPYM focuses exclusively on the S&P 500 index, which comprises large-cap US companies. In contrast, VTI targets the entire US stock market, encompassing large, mid, and small-cap companies. This fundamental difference in scope determines the breadth of investment exposure. While SPYM offers concentration in established large corporations, VTI provides a more comprehensive market representation, potentially offering greater diversification across different market capitalisations and company sizes.

How do the expense ratios of SPYM and VTI compare?

SPYM has an expense ratio of 0.02%, while VTI's expense ratio is 0.03%. Although VTI is marginally higher, both fees are exceptionally low and highly competitive within the ETF landscape. Over long periods, such small differences in percentage points have minimal impact on returns, especially given the low absolute values. The primary differentiator for investors often becomes the desired level of market exposure rather than a single basis point difference.

Are the top ten holdings similar between SPYM and VTI?

Yes, the top ten holdings for both funds are identical, consisting of major technology and consumer companies like NVDA, AAPL, and MSFT. However, the weightings differ significantly. For instance, NVDA holds 8.15% of SPYM but 6.87% of VTI. This variance occurs because VTI includes smaller companies and mid-caps, which dilute the relative weight of large-cap leaders compared to a pure large-cap index.

What level of liquidity do these funds offer?

Both funds demonstrate substantial liquidity and scale, although VTI is significantly larger. VTI holds approximately $692.2 billion in net assets, while SPYM has around $157.4 billion. High assets under management generally correlate with tighter bid-ask spreads and greater trading volume, making large-scale entry and exit easier. Investors often prioritise liquidity for efficiency, particularly when executing frequent trades or managing large positions within the market.

How do the dividend yields compare between the funds?

The dividend yields are very similar, with VTI offering 1.02% and SPYM offering 1.00%. This minor difference reflects the underlying composition of their respective indices. VTI’s inclusion of some mid-cap and value-oriented small-cap stocks may contribute to the marginally higher yield. Both funds represent low-to-modest distribution rates typical of growth-oriented market capitalisation weighted funds focused on major US companies.

What does it mean that VTI has 'Total Stock Market' exposure?

Total stock market exposure means that VTI attempts to mirror the performance of all publicly traded companies within the US, across large, mid, and small-cap segments. This differs from SPYM, which tracks only the S&P 500, a large-cap subset. VTI’s approach provides broader diversification across the economic spectrum, capturing the aggregate performance of the entire domestic equities market rather than just the biggest firms.

Why might the index methodology be unavailable for these funds?

The data currently lists 'not available' for the index tracking for both funds. This often happens in data feeds when specific index codes or links are not immediately mapped to the ticker or if the data source lacks real-time documentation access. Investors can typically find this detailed methodology on the issuers' websites or the S&P and CRSP documentation, but without it in the dataset, a direct verification of index mechanics is limited.

How long have these ETFs been in existence?

Both funds have long operational histories that provide significant track records. VTI was launched on May 24, 2001, while SPYM began on November 8, 2005. This timeline indicates that both products have navigated various economic cycles, including the dot-com bust, financial crises, and recent market shifts. Their longevity can enhance investor confidence in the stability and management of the structures.

How does sector concentration affect the performance of these funds?

Both funds carry high concentration in major technology firms, with the top five holdings heavily skewed towards tech giants like NVDA, AAPL, and MSFT. This concentration means that the funds’ performance will closely track the sector’s health. While SPYM’s concentration is slightly tighter due to its exclusion of smaller market segments, both funds share similar market risk profiles related to the tech sector’s volatility.

How would the difference in asset size affect an institutional investor?

Asset size, or AUM, affects market impact and liquidity. With VTI at $692.2 billion versus SPYM at $157.4 billion, VTI offers deeper liquidity pools. Institutional investors moving large capital sums often prefer larger AUM funds to minimise market impact and execute trades more efficiently, ensuring that the buy or sell orders do not significantly move the price against the investor.

What is the risk of 'market capitalisation weighting' for these funds?

Both funds typically use market capitalisation weighting, meaning larger companies have bigger weights. If the largest companies, which are currently tech-heavy, perform poorly, the funds will be disproportionately affected. This methodology can lead to overexposure to high-flying sectors and underexposure to smaller or value-oriented firms, creating inherent concentration risks that investors should evaluate carefully.

Are the dividend yields of 1.00% and 1.02% considered high?

In the context of general dividend strategies, yields of 1.00% and 1.02% are considered modest and typical for broad-market index funds focused on US large-cap growth companies. These funds prioritise capital appreciation over high income distribution. Investors seeking higher yields would generally need to explore dividend-focused ETFs or sectors like utilities or real estate, which are not the primary focus of these instruments.

SPYM vs VTI

Two funds, one decision: we compare cost, performance and what each ETF actually holds in September 2026.

This page compares SPDR Portfolio S&P 500 ETF (SPYM) and Vanguard Total Stock Market ETF (VTI) by examining their fees, holdings and dividends. It explores how each fund tracks its market: SPYM focuses on the S&P 500 index, while VTI aims to replicate the performance of the entire US stock market. Educational content, not financial advice.

Fund Snapshot

Key Fund Metrics

SPYM

Metric

VTI

0.02%

Expense Ratio

0.03%

1.00%

Dividend Yield

1.02%

$157.41B

Net Assets

$692.20B

508

Holdings

3,514

Nov 8, 2005

Inception Date

May 24, 2001

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Index Tracked

–

Fund Category

Large Blend

SPYM costs about $1.00 less per year for every $10,000 invested.

Shared Top Holdings

Holding	SPYM	VTI
NVDANVIDIA Corporation	8.15%	6.87%
AAPLApple Inc.	7.43%	6.30%
MSFTMicrosoft Corporation	5.55%	5.10%
AMZNAmazon.com, Inc.	3.77%	3.41%
GOOGLAlphabet Inc.	3.11%	2.70%
AVGOBroadcom Inc.	2.57%	2.37%
GOOGAlphabet Inc.	2.48%	2.12%
METAMeta Platforms, Inc.	2.22%	1.70%
MUMicron Technology, Inc.	1.74%	1.46%
TSLATesla, Inc.	1.55%	1.40%

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Investment Analysis

SPYM

Pros

The ETF offers a low expense ratio of 0.02%, enhancing cost efficiency for investors.
With $157.4 billion in net assets, it demonstrates significant market acceptance and liquidity.
It tracks the S&P 500, providing access to 500 large-cap US companies.

Considerations

It lacks exposure to small and mid-cap stocks, limiting diversification.
The index methodology is not available, potentially complicating assessment of tracking precision.
Dividend yield of 1.00% is modest compared to broader market alternatives.

VTI

Pros

It provides comprehensive exposure to the entire US stock market, including small and mid-caps.
At $692.2 billion, it is one of the largest and most liquid ETFs globally.
The dividend yield of 1.02% offers a slight edge over similar large-cap funds.

Considerations

The expense ratio is marginally higher at 0.03%, though still very competitive.
The index tracked is not available, which may concern some transparency-focused investors.
Top holdings weights show high concentration in major tech firms, mirroring index risks.

About SPYM and VTI

SPYM (SPYM)

This ETF aims to track a large-cap US equity benchmark, typically offering diversified exposure to hundreds of major companies. With a low expense ratio of 0.02%, it is designed for cost-efficient long-term portfolio building. It holds a significant amount of net assets, currently reported at approximately USD 157.41 billion, which can indicate liquidity and widespread institutional use. The fund provides exposure across various sectors of the US economy through its holdings, currently numbering around 508 companies. Investors might consider this as a core holding or a satellite position to complement other assets. As with all equity investments, the value of the ETF can fluctuate, and there is no guarantee of profit. It serves as a vehicle for gaining broad market exposure rather than trying to outperform specific stocks.

VTI (VTI)

This ETF offers broad exposure to the US equity market by tracking a comprehensive index of publicly traded companies. Designed as a large blend fund, it holds thousands of individual stocks, ranging from massive multinational corporations to smaller domestic firms. With an ultra-low expense ratio of 0.03%, it aims to provide cost-efficient long-term growth potential. The fund has a dividend yield of approximately 1.02%, reflecting the aggregate distributions from its holdings. Investors often consider this vehicle for core portfolio diversification, though it is essential to remember that stock market investments carry inherent risks, and values can fluctuate. Past performance is not indicative of future results, and returns are not guaranteed.

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SPYM vs VTI

Fund Snapshot