What to Know Before You Trade Nano Index Options

December 20, 2022

Your Guide to Trading Nano Index Options

Interested in trading Nanos but concerned about the complexity of index options? Understanding these key details can help.

S&P 500® Index (SPX®) options offer benefits such as broad market exposure, potential risk reduction, and possible tax advantages. For individual traders, Nanos provide an accessible way to trade index options. However, they differ from single-stock or ETF options in several ways. Before trading, review these unique characteristics.

Advantages of Index Options

Professional traders use SPX options to hedge and manage portfolio risk. While SPX options have high notional values, Nanos offer a smaller notional size, allowing individual traders to tailor positions relative to their portfolio—making professional-style strategies more accessible.

Let’s define key terms: notional value, multipliers, exercise style, and settlement.

Understanding Notional Value

Notional value represents the total value an options contract controls, excluding margin. It reflects the maximum potential exposure on a long position.

For stocks, notional value is simple: 100 shares at $20 equals $2,000. Similarly, an option on that stock represents $2,000 of exposure regardless of the option’s premium.

Index options use a multiplier to calculate notional value. For example, SPX options have a $100 multiplier. If SPX trades at 3600, the notional value is $360,000 (3600 × $100).

Mini-SPX options also use a $100 multiplier but represent 1/10th of SPX, resulting in a $36,000 notional value. SPY options have similar exposure.

Nanos use a 1x multiplier and are 1/100th the size of XSP. If XSP trades at 360, a Nanos contract has a notional value of $360—making it far more accessible for individual traders.

You don’t pay the full notional value upfront when buying options, but your account must support the position. The premium determines your cost, and multipliers affect how that premium is calculated.

Multipliers and Premium Calculation

Standard options typically have a 100x multiplier. For example, a $1.50 premium equals $150 (100 × $1.50). SPX and XSP options follow the same rule.

Nanos are unique with a 1x multiplier. If priced at $1.00, you pay $1.00 (plus fees)—making cost calculation simple and transparent.

Exercise Style

Nanos are European-style, meaning they can only be exercised at expiration—reducing assignment risk and simplifying management. Stock and ETF options are typically American-style, allowing exercise anytime before expiration.

Settlement

Stock and ETF options settle with physical delivery of shares. Nanos settle in cash, based on the difference between strike price and settlement value—eliminating stock delivery concerns.

Tax Treatment

Nanos generally qualify for 60/40 tax treatment (60% long-term, 40% short-term)**, similar to other index options. Consult your tax advisor for details.

Understanding Nanos in Action

Let example below illustrates how notional value and premiums are calculated for Nanos options.

Suppose Nanos are trading at $370, and you want to purchase a 368 call option expiring on October 21.

To find the notional value, multiply the number of contracts by the multiplier and the strike price. In this case: 1×1×368=$368

That means a single Nanos contract gives you exposure to $368 of the S&P 500 Index.

Next, calculate the option premium: 1 × 1 × 4.25 = $4.25

For $4.25 (plus applicable fees and commissions), you could control $368 worth of the index—making Nanos a cost-effective way to participate in index options trading.

Before You Trade

Explore the Nanos contract specs and become familiar with their unique characteristics. Try scaling up with different options trading strategies using a simulated trading account with one of the brokerages that offer them. Remember, trading is about having more winning trades than losing ones. But before trading Nanos, you should discuss with your broker whether trading Nanos is right for you and review the Characteristics and Risks of Standardized Options (or Options Disclosure Document) from The Options Clearing Corporation regarding risks associated with trading options.

**Under section 1256 of the Tax Code, profit and loss on transactions in certain exchange-traded options, including SPX, XSP and Nanos options, are entitled to be taxed at a rate equal to 60% long-term and 40% short-term capital gain or loss, provided that the investor involved and the strategy employed satisfy the criteria of the Tax Code. Investors should consult with their tax advisors to determine how the profit and loss on any particular option strategy will be taxed. Tax laws and regulations change from time to time and may be subject to varying interpretations.

There are important risks associated with transacting in any of the Cboe Company products discussed here. Before engaging in any transactions in those products, it is important for market participants to carefully review the disclosures and disclaimers contained at: https://www.cboe.com/us_disclaimers/. These products are complex and are suitable only for sophisticated market participants. In certain jurisdictions, Cboe Company products are only permitted for investment professionals, certified sophisticated investors, or high net worth corporations and associations. These products involve the risk of loss, which can be substantial and, depending on the type of product, can exceed the amount of money deposited in establishing the position. Market participants should put at risk only funds that they can afford to lose without affecting their lifestyle. © 2025 Cboe Exchange, Inc. All Rights Reserved.

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