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Vanguard S&P 500 ETF vs State Street SPDR Portfolio S&P 500 ETF
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Comparative Analysis
SPYM wins this head-to-head comparison against VOO, primarily driven by its lower expense ratio and slightly more favorable sector allocation for the current market environment. While both ETFs track broad large-cap U.S. equities and exhibit similar performance across longer timeframes, SPYM's cost advantage and its marginally higher weighting in technology, a sector showing resilience, give it a slight edge. Investors seeking broad market exposure with a focus on cost efficiency will find SPYM to be the more compelling option. VOO, while a strong performer and a staple for many portfolios, falls slightly behind due to its higher expense ratio. Its historical performance is commendable, especially over longer periods like 3, 5, and 10 years, where it matches or slightly outperforms SPYM on a risk-adjusted basis. However, in a direct comparison focused on immediate cost benefits and tactical sector positioning, SPYM presents a more attractive proposition for the cost-conscious investor.
Key Differentiator
The key differentiator between VOO and SPYM is cost efficiency. SPYM boasts a lower expense ratio of 0.02% compared to VOO's 0.03%, translating to a $1 per $10,000 annual saving for investors. While both ETFs offer similar broad market exposure and have demonstrated comparable performance over various timeframes, this fee difference is a tangible advantage for SPYM, especially for long-term investors where cumulative savings can become significant. This makes SPYM the more economical choice for achieving diversified large-cap U.S. equity exposure.
Joint Outlook
The outlook for both VOO and SPYM is largely tied to the performance of the U.S. large-cap equity market. Given their similar sector exposures and broad diversification, they are expected to move in tandem with overall market trends. A rotation out of technology or a significant market downturn would present a risk to both, though SPYM's higher tech weighting could exacerbate losses in such an event. Over the next 6-12 months, expect continued volatility but a generally positive trend for large-cap U.S. equities, assuming no major macroeconomic shocks. SPYM's cost advantage remains its strongest selling point, making it the preferred choice for investors prioritizing efficiency. VOO remains a solid, reliable option for broad market exposure, but its slightly higher fees make it less compelling in a direct comparison where cost is a key factor.
Price Analysis Comparison
Asset Metrics
| Metric | VOO | SPYM |
|---|---|---|
| 52 Week Range | $578.46 - $718.47 | $74.06 - $92.00 |
| Prev. Close | $715.20 | $91.55 |
| Net Assets | 1.74T | 173.63B |
| 24h Volume | 6.17M | 13.25M |
SPYM offers a marginally better valuation proposition due to its lower expense ratio of 0.02% compared to VOO's 0.03%. This translates to a cost of $2.00 per $10,000 invested for SPYM versus $3.00 for VOO, a direct saving for the investor. SPYM's lower fees mean more of the underlying investment's performance is retained by the investor over time. Both ETFs hold significant weightings in the Technology sector, with SPYM at 40.45% and VOO at 38.72%. This is a key area of comparison, as technology has been a dominant sector. SPYM's slightly higher allocation here, combined with its lower expense ratio, positions it favorably from a cost-efficiency and potential growth perspective within the current market structure.
Market Performance
| Metric | VOO | SPYM |
|---|---|---|
| Volatility (30D, annualized) | 10.76% | 10.52% |
| 24h Range | $704.80 - $713.58 | $90.24 - $91.37 |
| Market Strength (RSI) | 49.4 | 49.8 |
| Trend (SMA 50) | Bullish | Bullish |
Both assets exhibit similar volatility levels (~11%). Market momentum is currently Bullish for both.
Technical Indicators
| Indicator | VOO | SPYM |
|---|---|---|
| RSI (14) | 49.37 | 49.76 |
| 50-Day MA | $706.68 | $90.44 |
| 200-Day MA | $665.95 | $85.22 |
Both VOO and SPYM are exhibiting neutral momentum, with their respective RSI values hovering around 49.37 for VOO and 49.76 for SPYM, indicating neither is overbought nor oversold. Their MACD values are also modest, with VOO at 2.64 and SPYM at 0.36, suggesting a lack of strong directional trend at present. Both ETFs are trading slightly below their 20-day exponential moving averages (VOO at 709.20, SPYM at 90.77), which are themselves just above their 50-day simple moving averages (VOO at 706.68, SPYM at 90.44). This positioning suggests a consolidation phase rather than a strong trend. Price action for both ETFs shows them trading above their 200-day simple moving averages (VOO at 665.95, SPYM at 85.22), which confirms a longer-term uptrend remains intact. The stochastic indicators are also closely matched, around 47.43 for VOO and 47.21 for SPYM, reinforcing the current neutral technical stance. Neither ETF shows a clear technical advantage over the other at this moment, with both consolidating within their established long-term upward trends.
AI Analyst Sentiment
AI rating: CleaRank Financial AI's overall score for each asset, the same score shown on its own analysis page. It combines price trend and momentum with valuation, analyst and insider data where they exist.
VOO
AI Score: 78/100
SPYM
AI Score: 78/100
The RSI values for both funds are close to 50, suggesting a lack of strong buying or selling pressure. Their MACD lines are also showing minimal divergence, further supporting a neutral sentiment. The fact that both ETFs have identical YTD returns of 12.72% implies that market sentiment towards their underlying holdings is broadly aligned. Without specific analyst coverage or insider activity data, sentiment must be inferred from price action and broad market trends, which currently point to a balanced market view for these large-cap equity exposures.
Risk Stratification
| Metric | VOO | SPYM |
|---|---|---|
| Sharpe Ratio | 0.92 | 0.92 |
The primary risk for both VOO and SPYM lies in broad market downturns, as they are highly correlated to the performance of the U.S. large-cap equity market. A significant economic shock, geopolitical event, or a sharp rise in interest rates could negatively impact their underlying holdings. For VOO, a specific risk is its slightly higher expense ratio (0.03%) compared to SPYM's 0.02%, which represents a persistent drag on returns over the long term, especially in lower-return environments. This cost difference, while small, is a quantifiable risk to outperformance. SPYM's risk is marginally increased by its higher concentration in the Technology sector (40.45% vs. VOO's 38.72%). While technology has been a strong performer, any sector-specific headwinds, regulatory changes, or a rotation out of growth stocks could disproportionately affect SPYM. However, given the current market environment where technology continues to show resilience, this concentration risk is currently outweighed by the benefit of lower fees and similar performance metrics.
Comparative ProTips
- Prioritize SPYM for its lower expense ratio, which offers a direct cost advantage for long-term investors.
- Monitor technology sector performance, as SPYM's higher allocation could lead to greater volatility compared to VOO.
- Consider VOO if a slightly broader diversification across sectors is preferred, despite the marginally higher cost.
Monte Carlo Projection (10yr)
Simulated growth of $10,000 in each asset, from its own historical volatility and trend. Statistical outcomes, not forecasts.
Actionable Trade Plans
Compare entry, exit, and risk management levels for both assets
Select Your Trade Bias
Risk Tolerance
Conservative
3%
Aggressive
Portfolio Value
$
✎
Position Size: $200 - $300 per asset
VOO
Current: $707.43
ENTRY ZONES
Conservative
$672.06
Aggressive
$707.43
RISK MANAGEMENT
STOP LOSS
$651.90
MAX LOSS
-3%
Volatility-Adjusted Stop Loss
Calculated based on volatility and technical support levels.
Profit Targets (Based on Conservative)
+5% from current
$742.80
+10% from current
$778.17
+15% from current
$813.54
SPYM
Current: $90.58
ENTRY ZONES
Conservative
$86.05
Aggressive
$90.58
RISK MANAGEMENT
STOP LOSS
$83.47
MAX LOSS
-3%
Volatility-Adjusted Stop Loss
Calculated based on volatility and technical support levels.
Profit Targets (Based on Conservative)
+5% from current
$95.11
+10% from current
$99.64
+15% from current
$104.17
Calculate Your Trade
Disclaimer
This comparison involves assets with varying risk profiles. The content is for educational purposes only. The verdict weighs trend, valuation and risk together. Past correlation does not guarantee future lockstep movement. Trading involves risk of loss. Note: The AI favored SPYM based on relative valuation. This is valid for the specified timeframe only.
Frequently Asked Questions
Which is a better buy, VOO or SPYM?+
SPYM is a slightly better buy due to its lower expense ratio of 0.02% compared to VOO's 0.03%. Both ETFs offer similar broad market exposure and have demonstrated comparable performance, but SPYM's cost advantage provides a direct benefit to investors over time.
How do VOO and SPYM compare on expense ratios?+
SPYM has a lower expense ratio of 0.02%, costing $2.00 per $10,000 invested annually. VOO has a slightly higher expense ratio of 0.03%, costing $3.00 per $10,000 invested annually.
What are the sector allocations for VOO and SPYM?+
SPYM has a higher allocation to Technology (40.45%) compared to VOO (38.72%). Both ETFs have significant exposure to Technology, Financial Services, and Communication Services.
What is the dividend yield for VOO and SPYM?+
VOO offers a dividend yield of approximately 1.05%, while SPYM offers a yield of approximately 1.00%. Both provide a modest income stream.
How have VOO and SPYM performed over the past year?+
Over the 12 months to October 15, 2026, VOO's price rose 15.7% and SPYM's rose 15.8%. These are price changes; dividends are not included.
Which is more volatile, VOO or SPYM?+
They have been about equally volatile. Over the 30 days to October 15, 2026, VOO's annualized volatility was 10.8% and SPYM's 10.5%, measured from daily closing prices.