Buy To Open (BTO)

Options Trading
intermediate
7 min read
Updated Jan 5, 2026

What Is Buy To Open?

Buy To Open (BTO) is an options order type used to establish a new long position in options contracts. When you Buy To Open, you are purchasing call or put options from the marketplace, becoming the holder of those options and gaining the right to buy or sell the underlying asset at a predetermined price.

Buy To Open (BTO) is an options order type used to establish a new long position in options contracts. When you Buy To Open, you are purchasing call or put options from the marketplace, becoming the holder of those options. This creates a new position in your account, giving you the right to buy or sell the underlying asset at a predetermined price within a specified timeframe. The BTO order is the entry mechanism for options traders seeking leveraged exposure to price movements without the capital requirements of owning the underlying security. Each standard options contract represents 100 shares of the underlying asset, meaning a small premium can control significant underlying value. Understanding BTO is essential because it differs fundamentally from regular stock purchases. When you buy stock, you own the asset indefinitely with no time constraint. When you Buy To Open an options contract, you own a wasting asset that expires worthless if the underlying doesn't move favorably before expiration. BTO serves as the foundation for numerous options strategies including directional speculation, hedging existing positions, and volatility trading. Whether buying calls for bullish exposure or puts for bearish bets, the BTO order initiates your participation in the options market with defined maximum risk equal to the premium paid.

Key Takeaways

  • Order type for establishing new long options positions
  • Purchases call or put options to gain leveraged exposure
  • Maximum risk limited to premium paid
  • Provides leverage with defined risk parameters
  • Used for speculation, hedging, and income strategies
  • Time-sensitive due to option expiration
  • Profit from directional moves and volatility changes
  • Each contract represents 100 shares of underlying

How Buy To Open Works

Buy To Open orders purchase options contracts that do not currently exist in your account. You specify the underlying asset, strike price, expiration date, and option type (call or put) through your brokerage platform. The order executes when a seller agrees to the price, creating a new options position credited to your account with the specified contract terms. Each contract represents 100 shares of the underlying asset and costs a premium that represents the maximum risk on the trade. This premium is determined by intrinsic value (the amount the option is in-the-money) plus extrinsic value (time value and volatility premium). The mechanics of BTO execution involve the options clearinghouse assigning an options writer to each buyer. Your brokerage routes the order to an options exchange where market makers provide liquidity. Upon execution, the premium is debited from your account, and the options contract appears as a new position ready for management. Time decay begins immediately after purchase, with the option losing extrinsic value each day as expiration approaches. This theta decay accelerates in the final weeks before expiration, making timing and strike selection crucial for BTO profitability and success.

Tesla Earnings BTO Case Study

Tesla's January 2024 earnings demonstrates successful BTO call option execution.

1TSLA trading at $238 pre-earnings
2Analyst consensus: $2.50 EPS expected
3BTO 1 contract TSLA Feb $250 Call at $4.50
4Total cost: $450 (1 contract × 100 shares × $4.50)
5Breakeven: $254.50 ($250 strike + $4.50 premium)
6Earnings result: $3.10 EPS (+24% beat)
7Stock gaps up to $276 (+16%)
8Option value rises to $32.50
9Exit position for $3,250 (+$2,800 profit)
10622% return in one trading day
Result: The BTO strategy provided exceptional leverage during Tesla's earnings surprise. The $450 initial investment captured a $2,800 profit, representing a 622% return. This example illustrates how BTO orders can amplify gains when timing and direction are correct, though it also highlights the risk of total loss if the trade moves against the position.

BTO vs Buy To Close Orders

BTO and BTC orders serve opposite purposes in options trading.

AspectBuy To Open (BTO)Buy To Close (BTC)Position ImpactCash Flow
PurposeOpen new long positionClose existing short positionCreate new positionEliminate position
Order TypeOpening orderClosing orderEntry pointExit point
Cash FlowMoney out (premium)Money out (premium)Debit paidDebit paid
RiskLimited to premiumLimited to premiumDefined riskDefined risk
Use CaseSpeculation and hedgingRisk managementMarket entryPosition exit
TimingAt trade initiationDuring position lifeEntry timingExit timing

When to Use Buy To Open

Buy To Open is used when you want to establish new options positions for speculation or hedging. Execute BTO when you have a strong directional view on an underlying asset. Use BTO for volatility plays when options are underpriced. Apply BTO for leverage when you want exposure without full share ownership. Consider BTO for hedging existing positions with correlated assets.

Call vs Put Options in BTO

Buy To Open can be used for both call and put options with different directional biases. BTO calls profit when the underlying asset rises above the strike price plus premium. BTO puts profit when the underlying asset falls below the strike price minus premium. Calls are used for bullish positions, puts for bearish positions. Both provide leverage and defined risk.

Risk Management for BTO Orders

Effective risk management is crucial for BTO success. Never risk more than you can afford to lose. Use position sizing based on account size and risk tolerance. Set stop losses or time-based exits. Monitor time decay and volatility changes. Have a predefined exit strategy. Consider position delta and gamma exposure.

Time Decay and BTO Timing

Time decay works against BTO positions as options approach expiration. Choose expiration dates that provide sufficient time for your thesis. Consider implied volatility levels when selecting strikes. Time your entries around key events or technical levels. Monitor theta decay as expiration approaches. Use appropriate time frames for your strategy.

BTO Order Execution

BTO orders require careful execution to minimize costs. Use limit orders to control premium paid. Consider market hours for best liquidity. Monitor bid-ask spreads. Use appropriate order routing. Consider partial fills and price improvement. Track execution quality and slippage.

Advanced BTO Strategies

Advanced traders use BTO for complex strategies. Combine calls and puts for spreads. Use BTO for calendar spreads. Apply BTO in iron condors. Consider diagonal spreads. Use BTO for volatility arbitrage. Implement systematic approaches with defined rules. Combine with technical analysis for optimal timing.

Tax Implications of BTO

BTO positions have specific tax treatment. Short-term capital gains for positions held less than one year. Long-term rates for positions over one year. Options premium may be deductible. Consider wash sale rules. Track cost basis accurately. Consult tax professionals for complex situations. Understand tax efficiency of different strategies.

Common BTO Mistakes

Many traders make mistakes with BTO orders. Overpay for premium due to poor execution. Choose inappropriate expiration dates. Ignore time decay effects. Fail to consider implied volatility. Use excessive leverage. Lack proper risk management. Emotional decision-making instead of systematic approach. Not understanding option Greeks.

FAQs

Buy to open (BTO) is an options order used to establish a new long position by purchasing call or put options. It creates a new position in your account, giving you the right to buy or sell the underlying asset at a predetermined price. BTO is the entry point for options trading strategies.

Buy to open creates a new options position by purchasing options you don't currently own. Buy to close eliminates an existing short options position by purchasing back options you previously sold. BTO is an opening transaction that starts a trade, while BTC is a closing transaction that ends a trade.

No, you cannot lose more than the premium you pay for a BTO order. Options trading involves defined risk - your maximum loss is limited to the premium paid for the options contract. This makes BTO orders much safer than short selling stocks, where losses can be unlimited.

The cost of a BTO order depends on the premium of the options contract. Premiums are quoted per share, and each contract represents 100 shares. For example, if an option costs $2.50 per share, one contract costs $250 ($2.50 × 100). Costs vary based on strike price, expiration, volatility, and market conditions.

Use buy to open when you want to speculate on price movements with leverage, hedge existing positions, or generate income through options strategies. BTO is appropriate when you have a strong directional view, want defined risk, or need leveraged exposure without owning the underlying asset.

If your BTO option expires worthless, you lose the entire premium paid for the contract. The option ceases to exist, and you have no further rights or obligations. This is the maximum risk of any BTO position - the premium paid. You can avoid this by selling to close before expiration or letting OTM options expire.

Yes, you can buy to open both call and put options. Buy to open calls when you are bullish on the underlying asset. Buy to open puts when you are bearish. Both provide leverage and defined risk, but calls profit from upward moves while puts profit from downward moves. Choose based on your market outlook.

You can hold a BTO position until the option expires. However, time decay works against you as expiration approaches, reducing the option's value. Most traders close positions well before expiration. Consider your thesis timeframe, volatility, and risk management when choosing how long to hold a BTO position.

The Bottom Line

Buy To Open (BTO) is the fundamental order type for entering options positions, providing leveraged exposure with defined risk. While BTO orders offer the potential for significant profits through leverage and directional bets, they require understanding of time decay, volatility, and proper risk management. Success depends on selecting appropriate strikes, timing entries well, and maintaining discipline in position management. Key implementation guidance: avoid buying options with excessive implied volatility (check IV rank/percentile), select expirations that allow adequate time for your thesis to play out while minimizing theta decay, and never risk more than 2-5% of portfolio on any single options position to manage the binary nature of long options outcomes.

At a Glance

Difficultyintermediate
Reading Time7 min

Key Takeaways

  • Order type for establishing new long options positions
  • Purchases call or put options to gain leveraged exposure
  • Maximum risk limited to premium paid
  • Provides leverage with defined risk parameters