S&P 500 ^GSPC · SNP
$7,757.85 +0.59% (+$45.28)
Summary
S&P 500 is a stock index: one number that says how a chosen group of companies is doing together. Companies in it: 503. The ten largest make up 39% of the index. An index cannot be bought itself; you buy a fund that tracks it, for example SPY.
- Companies
- 503
- Ten largest
- 39%
- Rising today
- 283 of 503
- P/E of its companies
- 24.5
- Typical company, 1 year
- +6.9%
What speaks for it
- Average yearly growth over the last ten years: 14%.
- 61% of the companies are up over the last year.
- It is easy to buy through funds: SPY, VOO, IVV.
What to watch
- The ten largest companies make up 39% of the index, so a few names move it.
- 39% of the index is in one sector (Technology).
An index has no Bulios Score and no Fair Price of its own - both are computed from the results of a single company. The valuation below is counted from the companies that make the index up.
Price
Performance
- 1 month
- -0.7%
- 3 months
- +2.7%
- This year
- +13%
- 1 year
- +15%
- 3 years
- +83%
- 5 years
- +70%
- 10 years
- +260%
- Avg. market cap
- $1.65T
- P/E
- 24.5x
- Forward P/E
- 21.1x
- P/S
- 3.6x
- P/B
- 5.4x
- P/FCF
- 25.4x
- EV/EBITDA
- 18.1x
- Dividend yield
- 1.07%
- ROIC
- 22.5%
- ROE
- 48.8%
- Gross margin
- 54.8%
- Operating margin
- 29.8%
- Net margin
- 26.5%
- Payout ratio
- 26.2%
- Net debt/EBITDA
- 1.2x
- Bulios Score
- 70
Weighted average of every company of the index (503). Banks and insurers are left out of the gross margin, the ROIC and the EBITDA figures.
Where is it within the last year?
Near the yearly high- Against the 50-day average
- +0.1%
- Against the 200-day average
- +5.9%
It is 1.7% below its highest and 22% above its lowest of the last year. The long-term trend points up: it is above its 200-day average.
How many companies are rising?
A mixed picture- Rising 283
- Flat 1
- Falling 219
- Above the 50-day average
- 52%
- Above the 200-day average
- 53%
- Up over a year
- 61%
- Typical company, 1 year
- +6.9%
Rising today: 283 of 503 companies. 53% of them are above their 200-day average. Over the last year a typical company of the index changed by +6.9%.
Which companies weigh the most?
Concentrated- 1 NVNvidia NVDA +2.5% 7.9%
- 2 AAApple AAPL +1.3% 7.5%
- 3 MSMicrosoft MSFT +0.2% 6.0%
- 4 AMAmazon AMZN -0.1% 3.7%
- 5 GOAlphabet GOOGL -1.6% 3.1%
- 6 GOAlphabet GOOG -1.6% 2.5%
- 7 AVBroadcom AVGO +1.0% 2.5%
- 8 MEMeta META +0.5% 2.4%
- 9 MUMicron MU +2.0% 1.6%
- 10 TSTesla TSLA +3.4% 1.5%
The ten largest make up 39% of the index. Companies in all: 503.
Composition by the holdings of SPY as of Oct 18, 2026.
How is it spread?
| Sector | Weight | Today | 1 month |
|---|---|---|---|
| Technology | 39% | +1.6% | -3.1% |
| Financials | 11% | +0.6% | +0.1% |
| Communication services | 9.8% | -1.4% | -4.5% |
| Healthcare | 9.5% | -0.4% | +6.5% |
| Consumer cyclical | 8.8% | +0.3% | +2.6% |
| Industrials | 7.3% | +1.0% | -2.0% |
| Consumer defensive | 4.6% | -0.6% | +7.7% |
| Energy | 3.7% | +0.3% | +9.5% |
| Utilities | 2.0% | +0.4% | +3.0% |
| Basic materials | 1.8% | +0.4% | +3.3% |
| Real estate | 1.7% | -0.8% | -0.7% |
Largest sector: Technology (39%). Best over the last month: Energy (+9.5%).
By company size
- Mega cap 65%
- Large cap 35%
- Mid cap 0.2%
By the company's market value: Mega cap from $200B, Large cap from $10B, Mid cap from $2B, Small cap from $300M, Micro cap below $300M.
Largest size group: Mega cap (65%).
How has it done?
Growing over the long run- A year on average, 10 years
- +14%
- Deepest drop
- -25%
- Yearly volatility
- 13%
Average yearly growth over the last ten years: 14%. Deepest drop in these years: 25% below the earlier high.
Who joined and who left?
- + Added Twilio Inc. - Removed Warner Bros. Discovery
- - Removed Corteva, Inc.
- + Added Vylor Inc.
- + Added Pandora Media, Inc. - Removed The Trade Desk
- + Added Bloom Energy Corporation - Removed Molson Coors Beverage Company
- + Added Illumina - Removed Builders FirstSource, Inc.
The last change was on Oct 6, 2026.
How expensive are its companies?
Usual valuation- P/E of the companies inside
- 24.5
- Average Bulios Score
- 70 out of 100
Weight by Bulios Fair Price
- Undervalued 16%
- Fairly valued 5.6%
- Overvalued 78%
On average the companies inside trade for 24.5 times their yearly profit. By Fair Price, 78% of the rated weight comes out as overvalued.
Counted from every company of the index (503). Each company counts by its weight. We use the metrics, the Bulios Score and the Fair Price of the companies themselves.
How do I buy it?
Funds that track this index. They differ in where they are domiciled, what they cost and whether they pay dividends out.
| Fund | Domicile | Size | 1-year change | Dividends | |
|---|---|---|---|---|---|
SP SPY SPDR S&P 500 ETF Trust | United States | 0.09% | $814.0B | +15% | Pays out |
VO VOO Vanguard 500 Index Fund | United States | 0.03% | $1.70T | +15% | Pays out |
IV IVV iShares Core S&P 500 ETF | United States | 0.03% | $880.2B | +15% | Pays out |
