Directional Trading · Options Trading Guide

A debit vertical pairs a purchased option with a sold option of the same type and expiration. It reduces premium outlay in exchange for a capped payoff.

Build a bull call spread

Buy the lower strike call and sell the higher strike call on the same underlying and expiration. Consider buying a 100 call for $6 and selling a 110 call for $2.50. Net debit is $3.50 per share, or $350 for one standard spread. At expiration, maximum value is the $10 strike width, so maximum gross profit is $650 and maximum option loss is the $350 debit.

Map the intermediate outcomes

At $105 expiration value is $500, leaving $150 gross profit. At $103.50 the spread breaks even. At $110 or above the payoff is capped. A rise to $130 does not produce more than the same $650 maximum gross profit. Before expiration, time value on both legs means the mark can differ from the final payoff diagram.

Reverse the construction for a bearish view

A bear put spread buys the higher strike put and sells the lower strike put. Buying a 100 put and selling a 90 put for a net $4 debit gives $400 maximum option loss, $600 maximum gross profit and a $96 expiration breakeven for one standard spread. The long put gains as price falls, while the short put limits gains below $90.

Keep both legs under control

The bounded expiration calculation assumes the complete position is maintained and settled coherently. Early assignment, mismatched exercise instructions or a leg left open can create stock exposure and additional costs. Use a spread order where appropriate and verify quantities and expirations. Compare the capped reward with the actual target instead of automatically choosing the cheapest debit. If the thesis calls for only a small move, a very distant short strike may add cost without supporting the intended outcome.

Try it yourself

A five point bull call spread costs $1.80. What are maximum gross profit and maximum option loss for two standard spreads?

Show the worked answer

Each spread can gain (5 minus 1.80) × 100 = $320 and lose $180. Two spreads can gain $640 or lose $360 before costs and operational complications.

Further reading

Educational material. Examples and rates are hypothetical, not trade recommendations. Product terms, eligibility and risks vary by venue and jurisdiction.

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