A credit spread is an options strategy where you simultaneously sell one option and buy another on the same underlying asset, with different strike prices or expiration dates. The sale generates a premium (the credit you collect upfront); the purchase of the protective option reduces maximum loss. Your profit is the net credit collected, and your loss is capped at the difference between strikes minus the credit received. This defined risk appeals to traders seeking controlled exposure.
Types of Credit Spreads
A vertical credit spread involves options of the same expiration but different strikes. A call credit spread profits when the underlying price stays below your short strike at expiration; a put credit spread profits when price stays above it. You can also structure spreads across different expiration dates (horizontal or calendar spreads) to adjust risk and capital requirements.
Trading Considerations
Credit spreads limit profit to the premium collected but also cap maximum loss—this trade-off appeals to traders seeking predictable outcomes. Margin requirements vary by broker and spread type; vertical spreads typically require less margin than naked options because the long side provides insurance. Market volatility affects option premiums: higher volatility increases premium available but also increases risk of hitting your maximum loss. Monitor positions actively, especially as expiration approaches, and adjust or close spreads if the underlying moves unexpectedly.
