Learn how U.S. options trading works, including margin accounts, approval levels, contract terms, common strategies, Greeks, fees and risk management for disciplined decisions.
Pre-Trade Preparation for Options Trading: Account Opening and Permission Application
U.S. stock options trading differs significantly from stock trading in terms of account type, approval process and operating rules. This guide starts from a practical perspective and breaks down the key steps of account opening, strategy selection, parameter settings and risk management, helping investors build a systematic operating framework.
Account Type and Options Approval Levels
To trade U.S. stock options, investors first need to open a margin account, rather than a regular cash account. A margin account allows investors to trade using financing provided by the broker and is also a prerequisite for options trading. Different brokers have different minimum deposit requirements for margin accounts, generally ranging from USD 2,000 to USD 25,000.
Options trading permissions follow a tiered approval system. Brokers assess investors based on their experience, financial condition and risk tolerance. A typical four-level approval system is as follows:
| Approval Level | Allowed Operation Types | Typical Capital Requirement | Suitable Investor Type |
|---|---|---|---|
| Level 1 | Buying calls/puts, covered calls, cash-secured puts | Relatively low; some brokers have no minimum requirement | Options beginners |
| Level 2 | Level 1 + vertical spreads, iron condors, calendar spreads, etc. | Moderate; usually requires a margin account | Investors with some experience |
| Level 3 | Level 2 + naked short puts, ratio spreads, butterfly spreads | Relatively high; sufficient margin required | Advanced options traders |
| Level 4 | Level 3 + naked short calls, which carry theoretically unlimited risk | Highest; strict margin requirements | Professional traders |
When applying for options permission, brokers usually require investors to complete a questionnaire covering years of investment experience, annual income range, liquid net worth, investment objectives such as capital appreciation, income or speculation, and risk tolerance. Approval usually takes 1 to 5 business days. If the application is rejected or the approved level is lower than expected, investors may apply again after accumulating more stock trading experience.
Core Operating Parameters in Options Trading
Contract Specifications and Trading Units
One U.S. equity options contract represents 100 shares of the underlying stock. The premium shown in the quote is the price per share, so the actual trading cost = quoted price × 100. For example, if a call option is quoted at USD 3.50, the actual cost of buying one contract is USD 350. Some high-priced underlying stocks may offer mini options, with each contract representing 10 shares, but coverage is limited.
Investors should pay attention to the bid-ask spread when viewing quotes. Options with good liquidity, such as at-the-money options on AAPL or SPY, usually have spreads between USD 0.01 and USD 0.05. Less liquid options may have spreads above USD 0.50, significantly increasing trading costs. It is generally advisable to prioritize options contracts with average daily volume above 1,000 contracts and open interest (OI) above 500 contracts.
How to Choose a Strike Price
Strike price selection depends on the investor’s confidence in the underlying stock’s price direction and risk tolerance:
In-the-money options (ITM): They have higher intrinsic value, and their absolute Delta usually ranges from 0.60 to 0.90. They are more sensitive to changes in the underlying price, but the premium cost is higher. They are suitable for investors who want changes in the underlying stock price to be reflected more directly in the option price.
At-the-money options (ATM): Their absolute Delta is around 0.50, with the highest time value, larger Theta decay and higher Gamma. They are suitable for investors who have a directional view but are uncertain about the size of the move.
Out-of-the-money options (OTM): They have the lowest premium and the highest leverage, but the probability of being in-the-money at expiration is lower. Their absolute Delta usually ranges from 0.10 to 0.40. They are suitable for investors willing to bear a higher risk of total premium loss in exchange for higher leverage potential.
Practical suggestion: Beginners may start with ATM or slightly ITM options. Their premium cost is moderate and Delta sensitivity is relatively high, making it easier to understand the relationship between option prices and underlying stock prices in real trading. Deep OTM options may look cheap, but they have a higher probability of expiring worthless and are not suitable for beginners.
How to Choose an Expiration Date
Short-term options, expiring in 1 to 7 days, including 0DTE options that expire on the same day: time value decays extremely fast and Theta loss is severe. They are suitable for traders with very high conviction about short-term price direction. The risk is extremely high and they are not suitable for beginners.
Medium-term options, expiring in 30 to 90 days: time value decays relatively moderately, giving the underlying stock enough time to move in a favorable direction. This is the recommended time range for beginners.
Long-term options, known asLEAPS, with expiration dates longer than 9 months: time value decays the slowest, but premium costs are the highest. They are suitable for investors who use options as an alternative to holding the underlying stock for long-term directional positioning.
A practical principle for selecting expiration dates is that the remaining time should at least cover the expected catalyst event, such as earnings or a product launch, and include an additional buffer of 2 to 4 weeks to avoid being forced to close the position at an unfavorable time due to rapid time decay.
Operating Procedures and Parameter Settings for Common Options Strategies
Strategy One: Long Call
Suitable scenario: expecting the underlying stock price to rise significantly within a specific period.
Identify the underlying stock and directional view, which is bullish.
Select the expiration date: beginners are advised to choose contracts expiring in 30 to 60 days.
Select the strike price: beginners are advised to choose ATM or slightly ITM contracts, with Delta around 0.40 to 0.60.
Check the options chain and confirm the target contract’s bid price, ask price, volume and OI.
Check the Greeks: confirm Delta, which measures directional sensitivity; Theta, which measures daily time decay; and Vega, which measures volatility sensitivity.
Enter the order: choose a limit order and place it near the midpoint between the bid and ask prices to avoid executing directly at the seller’s quote.
Set a stop loss: it is generally advisable to close the position when the premium loss reaches 50% to 80%.
Using practical parameters as an example: Apple’s current stock price is USD 200. An investor buys one call option expiring in 45 days with a strike price of USD 200 and pays a premium of USD 6 per share, for a total cost of USD 600. If the stock price rises to USD 215, the option’s intrinsic value is about USD 15. After deducting the USD 6 cost, the net profit is approximately USD 9 per share, or USD 900 per contract. If the stock price stays below USD 200, the option expires worthless and the maximum loss is USD 600.
Strategy Two: Long Put
Suitable scenario: expecting the underlying stock price to fall, or providing downside protection for an existing stock position through a protective put.
The operating process is basically the same as a Long Call, except that the direction is bearish. When used as a downside protection tool, an investor buys one put option with a corresponding strike price for every 100 shares of stock held. If the stock price falls, gains from the put option may partially or fully offset losses on the stock position. Its function is similar to buying insurance for the stock, with the premium serving as the insurance cost.
Strategy Three: Covered Call
Suitable scenario: holding at least 100 shares of the underlying stock and expecting the stock price to rise moderately or move sideways in the short term.
Confirm that the account holds at least 100 shares of the underlying stock.
Select the expiration date: contracts expiring in 30 to 45 days are commonly used to benefit from time value decay.
Select the strike price: an OTM strike price 5% to 10% above the current stock price is commonly chosen, representing the investor’s acceptable selling price.
Sell one call option and collect the premium.
If the stock price is below the strike price at expiration: the option expires worthless, the investor keeps the premium and the stock, and may sell another call option.
If the stock price is above the strike price at expiration: the shares are called away at the strike price, and the investor receives the premium plus the stock sale proceeds.
The average monthly premium yield of covered calls is usually between 1% and 4%, depending on the volatility of the underlying stock and the selected strike price. It is a commonly used strategy for increasing cash flow from holdings. However, its limitation is that if the underlying stock price rises sharply, profit is capped at the strike price plus the premium, and the investor cannot participate in gains above the strike price.
Strategy Four: Bull Call Spread
Suitable scenario: expecting the underlying stock price to rise moderately and seeking to reduce premium cost while defining the risk-reward range.
Buy one call option with a lower strike price, such as an ATM USD 200 call.
At the same time, sell one call option with the same expiration month and a higher strike price, such as an OTM USD 210 call.
The net premium paid is the difference between the two premiums, resulting in a lower cost.
Maximum profit = (higher strike price - lower strike price) × 100 - net premium paid.
Maximum loss = net premium paid.
The advantage of a spread strategy is that it defines both the maximum loss and maximum profit range, reducing the risk exposure of a single directional view. The trade-off is that it gives up excess profit if the underlying price rises sharply.
How to Use Greeks in Practice
Greeks are not abstract theoretical concepts. They are quantitative parameters that directly determine profit and loss in every options trade. Understanding and applying Greeks is a key step in moving options trading from "gut feeling" to "evidence-based decision-making".
| Greek | Core Use in Trading | Typical Reference Values | Risk Warning Signal |
|---|---|---|---|
| Delta | Measures the option’s sensitivity to directional movement | Buyers often prefer 0.30 to 0.70 | An absolute value close to 1.0 indicates deep ITM status and weaker leverage effect |
| Gamma | Evaluates the stability of Delta | ATM options have the highest Gamma | ATM options near expiration have extremely high Gamma and can experience sharp price fluctuations |
| Theta | Calculates the daily time cost of holding the position | Negative for buyers and positive for sellers | Theta accelerates for ATM options in the final 30 days, which buyers should watch carefully |
| Vega | Assesses the impact of changes in volatility | Long-term options have higher Vega | Buying options when IV is high before earnings may lead to losses after IV falls due to "volatility crush" |
Practical point: before buying an option, first check the Theta value and calculate the daily time cost of holding the position. For example, if an option has a Theta of -0.15, it means that, all else being equal, the option’s value decreases by USD 0.15 per share, or USD 15 per contract, for each day it is held. If the planned holding period is 20 days, time decay alone would cause a theoretical loss of USD 300. Investors need to assess whether the expected movement in the underlying stock price is sufficient to cover this time cost.
Operating Framework for Risk Management
Position Management: Specific Rules for Capital Allocation
Single-trade limit: the capital invested in each options trade is generally recommended not to exceed 1% to 3% of total account assets. For example, with an account size of USD 50,000, the maximum investment in a single options trade would be USD 500 to USD 1,500.
Total position limit: the cumulative premium paid for all options positions should not exceed 10% to 20% of total account assets, helping ensure that overall account safety is not threatened under extreme conditions.
Diversify underlying assets: avoid concentrating all options positions in the same underlying stock. It is generally advisable to spread exposure across at least 3 to 5 different stocks.
Specific Execution Methods for Stop Loss and Take Profit
Premium-based stop loss: after buying an option, set a rule to close the position when the premium loss reaches 50% to 80%. Use stop-loss orders for automatic execution to avoid missing the stop-loss point due to hesitation or being away from the computer.
Time-based stop loss: if the position has already reached half of the planned holding period but the underlying stock price has not moved in a favorable direction, consider closing the position early to avoid accelerated Theta decay eroding the remaining value.
Profit management: when the premium profit reaches 100% to 200% of the invested cost, investors may consider partially closing the position to lock in profit, while continuing to hold the remaining position or setting a trailing stop.
Event Risk Management
Options trading around major events, such as earnings releases, Federal Reserve interest rate decisions and FDA drug approvals, requires particular caution:
Before earnings: implied volatility is usually high, and the premium cost of buying options is relatively expensive. If investors have a directional view, they may consider using spread strategies to reduce Vega exposure. If the direction is uncertain, they may wait until after the earnings release for IV to fall before entering.
After earnings: IV may drop sharply, known as volatility crush. Even if the directional view is correct, option buyers may still lose money due to Vega losses. Option sellers may benefit from the decline in IV at this stage.
Holding through an event period: if an options position is already held and the investor plans to hold through the event date, it is necessary to evaluate the combined impact of IV changes and price gaps on the position and set stop-loss conditions in advance.
Practical Calculation of Options Trading Fees
The fee structure of options trading is more complex than that of stock trading. Investors need to understand it comprehensively in order to accurately calculate trading costs:
Contract commission: charged per contract, usually USD 0.15 to USD 0.65 per contract. Multi-leg strategies, such as spreads, involve buying and selling multiple contracts at the same time, and fees are calculated based on the total number of contracts.
Platform usage fee: some brokers charge monthly or annual fees for providing real-time options quotes, advanced analysis tools and other services.
Exercise and assignment fees: when an option is exercised or assigned, brokers usually charge USD 5 to USD 20 per occurrence.
SEC and FINRA regulatory fees: charged at a very small percentage of the transaction amount when selling options, and the amount is usually small.
Taking a bull call spread as an example: buying one USD 200 Call and selling one USD 210 Call involves a total of 2 contracts. If the commission is USD 0.50 per contract, the total commission is USD 1. Including platform fees and possible regulatory fees, the total trading cost is approximately USD 2 to USD 5. Although the absolute amount is not high, when the premium itself is relatively low, such as a net debit of only USD 2 per share, trading fees may account for 5% to 10% of the premium, and their impact on actual return should not be ignored.
Questions About U.S. Options Trading
How should investors read key information in an Options Chain?
An options chain is a table showing all tradable options contracts for the same underlying stock, arranged by expiration date and strike price. When reading it, focus on the following columns: last traded price, bid, ask, daily volume, open interest, implied volatility, Delta, Gamma, Theta and Vega. Practical suggestion: prioritize contracts with narrow bid-ask spreads, ideally within USD 0.05, and high volume and OI to ensure sufficient liquidity. When placing a limit order, using the midpoint between the bid and ask as a reference may help obtain a better execution price.
After buying an option, how long should it be held before deciding whether to close the position?
There is no fixed standard for holding period, but it can be assessed from the following angles. First, if the underlying stock price has not moved in a favorable direction after half of the planned holding period has passed, consider closing the position to stop loss and avoid accelerated Theta decay during the remaining time. Second, if the preset profit target has been reached, such as the premium doubling, investors may partially close the position to lock in profit and set a trailing stop to protect the remaining position. Third, if the market environment changes significantly, such as a sudden event causing a trend reversal, the reasonableness of the position should be reassessed decisively. Avoid simply "holding on" indefinitely. Options have expiration dates and cannot be held indefinitely like stocks while waiting to recover losses. Time value decay is irreversible.
What is a Cash-Secured Put, and when is it suitable?
A cash-secured put means selling one put option while keeping enough cash in the account to buy 100 shares at the strike price. If the stock price is above the strike price at expiration, the investor keeps the premium income. If the stock price is below the strike price, the investor must buy 100 shares at the strike price. This strategy is suitable for investors willing to buy a specific stock below its current market price. By collecting the premium, the investor effectively reduces the purchase cost, with the effective purchase price = strike price - premium. The risk is that if the underlying stock price falls sharply, the investor must still buy the stock at the higher strike price, which may result in a large paper loss.
How can multi-leg spread orders be set up on a trading platform?
Mainstream options trading platforms generally support multi-leg orders. Taking a bull call spread as an example: after selecting the underlying stock in the options chain, click the corresponding expiration month, find the Call at the target strike price and select "buy", then find the Call at the higher strike price and select "sell". Then choose the "spread order" type. The platform will automatically calculate the net debit or net credit, and the investor submits the order as a limit order. The advantage of multi-leg orders is that both legs are executed at the same time, avoiding the risk that one leg is filled while the other is not due to price changes during separate order placement.
How can investors avoid common operational mistakes in options trading?
Common beginner mistakes and ways to avoid them include the following. First, placing orders without checking the Greeks. Before buying, investors should confirm whether Theta, or time cost, is within an acceptable range and whether IV is at a reasonable level. Second, overusing leverage. Although the cost of a single contract may look low, holding too many contracts magnifies risk, so position management rules should be followed strictly. Third, ignoring liquidity. Buying contracts with overly wide bid-ask spreads or very low OI may make it difficult to close the position later at a reasonable price. Fourth, holding until expiration without action. ITM options are automatically exercised at expiration, and if the account lacks sufficient funds to take delivery of shares, the position may be forcibly closed. OTM options expire worthless and the entire premium is lost. Investors should actively assess whether to close or roll the position to the next expiration month 1 to 2 days before expiration.
