Head-to-head · ETF vs ETF
SPDR S&P 500 ETF Trust vs Vanguard S&P 500 ETF
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SPY vs VOO: the verdict
How SPY and VOO compare today, and what CleaRank Financial AI makes of it.
The verdict
CleaRank Financial AI
Level on score
SPY
VOO
60/100
AI score
60/100
+10.0%
1-year change
+10.1%
22.2%
Volatility (30d, yearly)
22.1%
44.6
RSI (14-day)
44.6
The verdict
The gap is narrow, and no one factor pulls the two apart by much.
Key difference
Size is where the two funds differ most. VOO runs $1.74T in net assets, while SPY has $809.2B.
Outlook
SPY sits between its 50-day average at $765.00 and its 200-day at $730.99. VOO sits between its 50-day average at $703.73 and its 200-day at $671.89.
Price, side by side
Both prices start at 0% on the first day of the period you pick, so the moves compare directly.
Rebased price
-6%-4%-2%0%-3.6%-3.7%
Nov '26
-4%-2%0%-2.7%-2.7%
Sep '26Oct '26Nov '26
-2%0%+2%+4%+6%+1.6%+1.6%
Jun '26Jul '26Aug '26Sep '26Oct '26Nov '26
-5%0%+5%+10%+15%+10%+10%
Dec '25Feb '26Apr '26Jul '26Sep '26Nov '26
-10%0%+10%+20%+30%+40%+36%+36%
Oct '24Mar '25Aug '25Jan '26Jun '26Nov '26
Over 1 year: SPY gained 10.0% and VOO gained 10.1%, level on the period.
Key metrics
Size and recent performance for each.
Size and market performance
SPY
VOO
$809.2B
Size (net assets / market cap)
$1.74T
40.6M
Volume (shares, last session)
6.1M
79%
Position in 52-week range
79%
-2.0%
Price against 50-day average
-2.0%
Reading
Of the two, VOO is the cheaper fund to own. Its expense ratio is 0.03%, while SPY's is 0.095%. On a $10,000 holding, SPY would cost $9.50 a year and VOO $3.00. VOO is also the larger fund, with $1.74T in net assets compared with $809.2B for SPY.
Momentum and sentiment
The indicators behind each AI score, side by side.
Indicators side by side
SPY
VOO
60/100
AI score
60/100
44.6
RSI (14-day)
44.6
-2.0%
Price against 50-day average
-2.0%
+2.6%
Price against 200-day average
+2.6%
Technicals
SPY is in a mixed trend, trading 1.97% below its 50-day average and 2.59% above its 200-day average. Its 14-day RSI is 44.5, in the neutral zone, with the MACD line negative. VOO is in a mixed trend, trading 1.98% below its 50-day average and 2.58% above its 200-day average. Its 14-day RSI is 44.6, in the neutral zone, with the MACD line negative. VOO sits higher in its 52-week range, at 81% against 79% for SPY.
Sentiment
SPY fell 3.68% over the past month and fell 2.68% over three months. VOO fell 3.31% over the past month and fell 2.64% over three months.
Risk and practical tips
How much each moves, how much return each has paid for that risk, and what to watch if you hold either.
Risk measures
SPY
VOO
22.2%
Volatility (30d, yearly)
22.1%
0.66
Sharpe ratio
0.68
Risk
They move about the same on a typical day, 1.16% for SPY and 1.15% for VOO. Their worst falls in the price history were 33.6% for SPY (February 2020 to March 2020) and 33.9% for VOO.
ProTips
- For SPY, watch the 20-day EMA at $758.11 above the price and the 200-day SMA at $730.99 below it.
- For VOO, watch the 20-day EMA at $697.73 above the price and the 200-day SMA at $671.89 below it.
- Costs compound: SPY charges $9.50 a year on $10,000 and VOO $3.00.
SPY vs VOO: long-term scenarios
Simulated paths from each price history. A range of outcomes, not a forecast.
Simulated growth of $10,000
$10K$20K$30K$40K$42.8K$42.8K$21.3K$21.3K
202620282030203220342035
SPY
VOO
$10,612
Downside, 2035 (10th)
$10,615
$21,310
Base case, 2035 (median)
$21,316
$42,793
Upside, 2035 (90th)
$42,807
In the median simulated path, $10,000 in SPY grows to about $21,300 and $10,000 in VOO grows to about $21,300 by 2035. The paths come from each asset's own volatility and capped historical trend; they are statistical outcomes, not forecasts.
SPY vs VOO: questions people ask
Answered from the figures on this page.
Frequently Asked Questions
Which is better, SPY or VOO?+
They score the same on CleaRank's model, 60/100. This describes the data on this page and is not a personal recommendation.
Which has performed better over the past year, SPY or VOO?+
VOO has the better one-year record. Its price rose 12.15% over the past year, against 10.05% for SPY.
Which is cheaper to own, SPY or VOO?+
Cost is the main gap here. VOO's expense ratio is 0.03%, compared with 0.095% for SPY.
Which pays more income, SPY or VOO?+
VOO pays the higher yield, at 1.07% against 0.99% for SPY. Yield is the payout divided by the price, so it moves whenever either of those does.
Which is riskier, SPY or VOO?+
They carry about the same risk on the measures we track. Average daily move: 1.16% for SPY, 1.15% for VOO. Worst fall in the price history: 33.6% for SPY, 33.9% for VOO.
Which has stronger momentum right now, SPY or VOO?+
Both MACD lines are negative. Readings above 70 or below 30 mark stretched momentum.
Which fund is larger, SPY or VOO?+
VOO is the bigger of the two funds, with $1.74T in net assets. SPY holds $809.2B.
How would $10,000 have grown in SPY or VOO?+
Invested in December 2016, $10,000 would be worth $39,967 today in SPY and $40,379 in VOO.
Which is closer to its 52-week high, SPY or VOO?+
VOO sits closer to its peak: it is 3.70% under its 52-week high of $718.47. SPY is 4.06% under its own high of $781.62.