US500 (S&P 500): How the Index Works and How the CFD Is Traded

• US500

What the S&P 500 is

The S&P 500 is a stock market index that tracks large companies listed in the United States. Many investors treat it as a broad measure of the US large-company stock market. A committee at S&P Dow Jones Indices selects the members using published rules on size, liquidity, profitability and US domicile. It is not a simple list of the biggest companies.

You cannot buy the index itself. People get exposure through index funds, futures, options or CFDs. On Exness, the S&P 500 is offered as a CFD under the symbol US500. Exness confirms that on its platforms the Dow Jones, Nasdaq and S&P 500 appear as US30, USTEC and US500.

How the weighting works

The S&P 500 is float-adjusted market-capitalisation weighted:

• Market capitalisation is the share price multiplied by the number of shares.
• Float adjustment counts only shares available to the public. Shares held by founders, governments or other strategic holders are left out.
• A company's weight is its float-adjusted value divided by the total value of all members.

As a result, the largest companies move the index more than the smaller members. When a few very large technology names rise or fall sharply, the whole index can move even if most other stocks barely change. Experienced traders watch this concentration, because a single company's earnings report can move US500.

Sector mix

The index covers all the standard GICS sectors, such as information technology, financials, health care, consumer discretionary, communication services, industrials, consumer staples, energy, utilities, real estate and materials. Information technology and technology-related communication companies currently carry a large share of the weight. This is why US500 often moves in the same direction as the Nasdaq-100. The S&P 500 is still broader and less tech-heavy, so the two can diverge. See USTEC (US Tech 100) and US30 (Dow Jones) for comparison.

What moves US500

• Earnings season. US companies report results on a regular schedule. Results and guidance from the largest members can shift the index, especially when they differ from expectations.
• Interest rates. Federal Reserve decisions and US Treasury yields affect how investors value future company profits. Higher yields tend to pressure valuations. Lower yields tend to support them. The effect is not guaranteed.
• Economic data. Inflation, jobs and growth figures change expectations for rates and profits.
• Risk sentiment. Geopolitical events, credit stress or sudden market shocks can produce fast, broad moves.

The economic calendar and fundamental analysis guide covers how traders follow these releases.

US500 CFD basics

A CFD (contract for difference) is an agreement to exchange the change in price between opening and closing a position. You do not own any shares. A CFD is traded on margin, which is the deposit the broker holds to keep the position open. Leverage lets you control a larger position than your margin, so profits and losses are both magnified. Read Index CFDs explained for the full mechanics.

Key terms:

• Point or pip: the smallest standard price step used to count price movement. Its size and value depend on the instrument's specification.
• Contract size: how much index exposure one lot represents.
• Spread: the difference between the bid and ask price.
• Swap: a charge or credit for holding a position overnight.

The contract size, pip size, minimum volume and spread for US500 are not covered in our sourced facts. Check the specification in the platform before trading.

Use the calculators to see what a position size means in money:

Exness conditions for US500 (sourced)

Notes:

• Exness says the indices leverage rollout dates may change. Check the current leverage for US500 in the platform or the Personal Area.
• Exness also notes that index trading on Standard MT4 accounts is available only for selected account currencies.
• HMR means a lower leverage, and therefore more margin, during the daily break and over the weekend.
• Exness also states that 0% stop out not supported in some countries; may vary.

On overnight costs, Exness states that by default all accounts are swap-free on listed instruments; the status can be lost. Clients registered from Pakistan are on the Islamic swap-free country list. Swap-free status still depends on Exness terms and can change, so check it in your Personal Area. See Swap fees and Account types.

Risk and the legal position in Pakistan

US500 can move sharply on earnings, rate decisions and news. With leverage, a small move against you can wipe out your margin quickly. Leveraged CFD trading can lose money fast. Practise on a demo account and read Risk management.

Also know the local rules:

• Per the SBP, the purchase of offshore forex/margin/CFD products by Pakistani residents violates section 4(1) of FERA 1947.
• Also, per the SBP, remitting foreign exchange to overseas forex/margin/CFD platforms is not allowed through any payment channel (FERA s.5(1)).
• Per the SECP, offshore forex/CFD platforms operate without regulatory approval in Pakistan, and per the SECP, offshore platforms have no Pakistani licence or oversight and offer no legal protection or recourse.

Read Law and regulators before deciding anything.

Frequent questions

Is US500 the same as the S&P 500?

US500 is the Exness CFD symbol that follows the S&P 500 index. You trade price changes and do not own shares.

Why does US500 often move with the Nasdaq?

Large technology companies carry heavy weight in both indices. The S&P 500 is broader, so the two do not always move together.

What leverage applies to US500 on Exness?

US500 is excluded from fixed index leverage. Exness lists a dynamic leverage rollout (US30, US500, USTEC, JP225 (+x10/x100): from 400 to unlimited, planned for 7 November 2026; rollout dates may change), and HMR applies at breaks. Confirm the current value in the platform.

How do I know the contract size and pip value?

Open the US500 specification in MetaTrader or the Exness terminal, then enter your volume in the pip calculator above.

When can I trade US500?

Differ by underlying instrument; servers run on UTC+0. Check the instrument schedule in the platform.

Is S&P 500 trading suitable for beginners?

Beginners can learn the index mechanics on a demo account. Real leveraged trading carries a high risk of fast losses. Start with Trading basics.