By Market Capitalization
The largest companies carry the greatest weight in the index. It is the most common method. Example: S&P 500, Nasdaq 100.
“Invest in the pulse of the world's economies.”
Global Indices
The indicators that move the markets. Diversify your portfolio by investing in complete baskets of leading companies, with a single trade and institutional-grade exposure.
$50T+Global Market Cap
24/5Markets Open
100+Indices Available
What Are Global Indices?
Global indices are statistical indicators that group and represent the collective performance of a set of financial assets, generally shares of companies belonging to a specific market, sector or region.
Instead of buying each stock individually, indices let you invest in an entire market at once, gaining diversified exposure, reducing concentration risk and simplifying the management of your portfolio.
Indices act as thermometers of the economy: when they rise, they reflect confidence and growth; when they fall, they signal caution or retreat. They are essential for institutional investors, pension funds, ETFs and traders worldwide.
How Do Indices Work and How Are They Calculated?
Indices are not bought directly like shares; they represent a mathematically calculated value
Stock indices are built by selecting a specific group of companies according to criteria such as market capitalization, economic sector, liquidity or geography. Once selected, the index calculates its aggregate value using different methodologies:
By Share Price
Companies with a higher share price carry more weight, regardless of their actual size. Example: Dow Jones Industrial Average.
Equal Weighting
Every company carries the same weight in the calculation, no matter its size. Example: Some sector ETFs.
Key Fact:
Indices are recalculated constantly during market hours (every second, or even more often). They are also reviewed periodically to add emerging companies and remove those that no longer meet the criteria, so they always stay up to date.
Types of Global Indices
Indices can be classified by different criteria: geography, sector, company size or strategy
Geographic Indices
They group companies from a specific country or region. They let you invest in the economy of an entire nation or continent.
Examples:
- • S&P 500 (U.S.)
- • FTSE 100 (United Kingdom)
- • DAX 40 (Germany)
- • Nikkei 225 (Japan)
Sector Indices
They bring together companies from a specific industry: technology, healthcare, energy, finance, consumer goods, etc.
Examples:
- • Nasdaq 100 (Technology)
- • S&P Healthcare (Healthcare)
- • Energy Select Sector (Energy)
- • XLF (Finance)
By Capitalization
They classify companies by their market size: large-cap, mid-cap and small-cap.
Examples:
- • Russell 2000 (Small-Cap USA)
- • S&P MidCap 400
- • MSCI World Large Cap
Thematic Indices
Focused on specific trends or strategies: sustainability, innovation, dividends, low volatility.
Examples:
- • MSCI ESG Leaders (Sustainability)
- • ARK Innovation ETF (Innovation)
- • S&P Dividend Aristocrats
The World's Most Important Indices
Get to know the indicators that set the pulse of global economies and move trillions of dollars every day
Nasdaq 100
US Tech 100 | NQ
It groups the 100 largest non-financial technology companies listed on the Nasdaq market. It is the benchmark index for innovation, technology, software, internet and biotech.
It includes giants such as Apple, Microsoft, Amazon, Nvidia, Tesla, Meta, Alphabet (Google) and many more. It is highly volatile but carries enormous growth potential.
🚀 High Volatility💻 Technology🌎 Global
$15T+Market Cap
100Companies
Dow Jones Industrial Average
DJIA | US30
The oldest and most emblematic index in the United States. It groups 30 leading companies from the industrial, technology, financial and consumer sectors.
It is weighted by share price, which makes it unique. It includes companies such as Boeing, Coca-Cola, McDonald's, Visa, Goldman Sachs. It reflects the health of the traditional U.S. economy.
🏛️ Traditional📈 Stable🇺🇸 Blue Chips
$8T+Market Cap
30Companies
S&P 500
Standard & Poor's 500 | SPX
The most important index in the world. It represents the 500 largest companies in the United States by market capitalization, covering roughly 80% of the U.S. market.
It is the global reference for institutional investors, pension funds and ETFs. Diversified across every sector: technology, healthcare, finance, energy, consumer goods. It is the benchmark par excellence.
⭐ Global Benchmark🎯 Diversified💼 Institutional
$40T+Market Cap
500Companies
DAX 40
Deutscher Aktienindex | GER40
The leading index of Germany and Europe. It groups the 40 largest companies listed on the Frankfurt Stock Exchange, representing German industrial and export strength.
It includes giants such as Volkswagen, Siemens, BMW, Allianz, SAP, Bayer. It is the thermometer of the European economy and a key indicator for global investors interested in Europe.
🏭 Industrial🇪🇺 Europe📊 Export-Driven
$1.5T+Market Cap
40Companies
Nikkei 225
日経平均株価 | JPN225
The most important index in Japan and Asia. It groups the 225 largest companies listed on the Tokyo Stock Exchange, reflecting Japanese technological and industrial strength.
It includes iconic companies such as Toyota, Sony, SoftBank, Nintendo, Mitsubishi, Honda. It is price-weighted (similar to the Dow Jones) and is key to understanding Asian markets.
🎌 Japan🚗 Automotive🎮 Technology
$4T+Market Cap
225Companies
FTSE 100
Financial Times Stock Exchange | UK100
The main index of the United Kingdom. It represents the 100 largest companies by capitalization listed on the London Stock Exchange (LSE).
It includes global companies such as Shell, BP, HSBC, Unilever, AstraZeneca. Many of its companies have international operations, so it reflects both the British economy and global trends.
🇬🇧 United Kingdom🏦 Financial🌍 Global
$2.2T+Market Cap
100Companies
Advantages of Investing in Global Indices
Indices offer unique benefits that make them essential tools for any portfolio
Automatic Diversification
With a single trade you invest in dozens or hundreds of companies, drastically reducing the risk of concentrating in one asset.
High Liquidity
The most important indices have enormous trading volumes, letting you enter and exit the market easily and with tight spreads.
Full Transparency
You know exactly which companies make up the index, their weights and how it is calculated. No hidden surprises or abusive fees.
Lower Costs
Investing in indices through ETFs or CFDs is far cheaper than buying each of their component stocks individually.
Ideal for Macro Strategies
Indices reflect broad economic trends, making them perfect for investors who analyze whole economies rather than individual companies.
Institutional Access
The same indices used by pension funds, hedge funds and investment banks are now within your reach from a retail account.
Lower Single-Stock Risk
If one company fails or runs into trouble, its impact on your portfolio is minimal compared with holding that stock alone. The index dilutes the risk.
Automatic Rebalancing
Indices are updated periodically, dropping weak companies and adding new leaders, without you having to do anything.
Investment Strategies with Indices
Indices adapt to many trading and investing styles, from conservative to aggressive
Long-Term Buy & Hold
How does it work? You buy an index (usually through an ETF) and hold it for years, taking advantage of the historical growth of the markets.
Goal: Benefit from long-term economic growth without worrying about short-term volatility.
Ideal for: Passive investors, retirement funds, and people looking to build wealth gradually.
Intraday Trading (Day Trading)
How does it work? You take advantage of the daily volatility of indices by opening and closing positions within the same day, using CFDs and leverage.
Goal: Capitalize on short-term moves driven by news, market openings or economic events.
Ideal for: Active traders with technical knowledge, discipline and strict risk management.
Swing Trading (Positions of Days/Weeks)
How does it work? You hold positions for several days or weeks to capture market “waves” based on technical analysis.
Goal: Take advantage of medium-term trends without the pressure of day trading or the commitment of the long term.
Ideal for: Investors with limited time but with technical knowledge and analytical skills.
Portfolio Hedging
How does it work? If you hold a stock portfolio, you can sell (go short) an index such as the S&P 500 to protect yourself from broad market declines.
Goal: Reduce losses in crisis or correction scenarios without having to sell your individual stocks.
Ideal for: Institutional investors, fund managers or individuals with large portfolios seeking protection.
Sector Rotation
How does it work? You shift your exposure between different sector indices (technology, healthcare, energy) according to the phases of the economic cycle.
Goal: Maximize returns by taking advantage of which sectors perform best in expansion, recession or recovery.
Ideal for: Investors with a macroeconomic view and knowledge of economic cycles.
Dollar Cost Averaging (DCA)
How does it work? You invest a fixed amount of money in an index every month, regardless of price, buying more when it falls and less when it rises.
Goal: Reduce the impact of volatility and average out your entry price over time.
Ideal for: People with a regular income who want to build wealth without worrying about perfect timing.
Comparison: Leading Global Indices
Understand the key differences so you can choose the right index for your strategy
| Index | Companies | Calculation Method | Volatility | Profile |
|---|---|---|---|---|
| Nasdaq 100 | 100 | Capitalization | High | Technology and growth |
| S&P 500 | 500 | Capitalization | Medium | Diversified, global benchmark |
| Dow Jones | 30 | Price | Low-Medium | Traditional blue chips |
| DAX 40 | 40 | Capitalization | Medium | German/European industrial |
| Nikkei 225 | 225 | Price | Medium | Japanese industrial and technology |
| FTSE 100 | 100 | Capitalization | Medium | British multinationals |
Practical Cases and Usage Examples
Learn how indices are used in real investing and trading situations
Long-Term Investor Building Wealth
Profile: Ana is 35, works at a company and wants to invest for her retirement. She has no time to follow individual stocks.
Strategy: She decides to invest $500 a month in an S&P 500 ETF using Dollar Cost Averaging (DCA).
Rationale: The S&P 500 has historically delivered an average return of 10% a year. It diversifies automatically across 500 companies and rebalances on its own.
Projected outcome: Over 25 years, investing $500/month at a 10% annual return, Ana would accumulate roughly $650,000 USD, without having to manage anything actively.
Day Trader Taking Advantage of Nasdaq Volatility
Profile: Carlos is an active trader who works from home. He looks to take advantage of the daily moves of the technology market.
Strategy: He trades Nasdaq 100 CFDs during the first 2 hours after the Wall Street open, using technical analysis and news.
Rationale: The Nasdaq is highly volatile and liquid, perfect for day trading. Big tech news moves the index sharply.
Example outcome: Carlos buys the Nasdaq at 15,000 points. The index rises 1.5% in 3 hours (225 points). With 1:10 leverage and $2,000 invested, he books a gain of $300 in just a few hours (costs not included).
Investor Protecting a Portfolio with a Hedge
Profile: María holds a $100,000 portfolio of U.S. stocks. She expects volatility around the presidential elections.
Strategy: Without selling her stocks, she opens a short position (sell) on the S&P 500 for $20,000.
Rationale: If the market falls, her stocks will lose value, but her short position on the S&P 500 will gain, offsetting part of the losses.
Example outcome: The market falls 8%. Her portfolio loses $8,000, but her short position on the S&P 500 gains $1,600. Net loss reduced to $6,400 thanks to the hedge.
Investor Using Sector Rotation with Indices
Profile: Luis is an experienced investor who follows economic cycles. He identifies that the economy is coming out of a recession.
Strategy: During the recession he invested in healthcare and consumer staples indices (defensive). Now he rotates into technology and consumer discretionary (cyclical).
Rationale: In an economic expansion, cyclical and growth sectors outperform defensive ones. Sector indices let him do this easily.
Example outcome: He sells his positions in healthcare indices (which rose 8% during the recession) and buys the Nasdaq 100. In the expansion phase the Nasdaq rises 25%, multiplying his gains versus staying in defensive sectors.
Risks and Important Considerations
Market Volatility
Although indices are less volatile than individual stocks, they remain subject to sharp falls in economic crises, pandemics or wars. A decline of 20-30% is possible.
Leverage Risk
If you trade with CFDs and leverage, you may lose more than your initial investment. Leverage amplifies both gains and losses.
Concentration in a Few Companies
In indices such as the Nasdaq 100 or S&P 500, the 10 largest companies account for more than 30% of the total weight. If those companies fall, the index suffers disproportionately.
Geographic and Political Risk
Indices are exposed to political events in their countries: elections, regulatory changes, geopolitical tensions, trade wars, etc.
They Do Not Eliminate Systemic Risk
Indices diversify the individual risk of companies, but they do NOT protect against broad market declines (systemic crises such as 2008 or 2020).
Active Trading Costs
If you trade frequently (day trading), spreads, commissions and overnight financing costs can significantly reduce your gains.
Final Warning: Indices are powerful tools, but they do not guarantee gains. It is essential to have professional analysis, strict risk management and an understanding of your investor profile before trading. At STX Markets, we support you with strategic intelligence, professional execution and ongoing education to maximize your chances of success.
Ready to Invest in the Global Markets?
At STX Markets we give you access to more than 100 global indices with professional analysis, institutional execution and strategic support. Trade with confidence, transparency and full control.