Bear Call Spread

Core Thesis

A Bear Call Spread is a defined-risk bearish or neutral-income structure. You sell upside insurance near resistance and cap tail exposure with a higher-strike long call.

Structure

• Short call at lower strike $K_s$.
• Long call at higher strike $K_l$.
• Same expiration; net credit $C$.

Expiration Payoff Mathematics

$$\Pi_T = C - \max(S_T-K_s,0) + \max(S_T-K_l,0)$$

• Max profit: $C$.
• Max loss: $(K_l-K_s)-C$.
• Break-even: $K_s + C$.

Greek Profile

• Negative delta with positive theta.
• Negative gamma near short strike; upside breaks can escalate losses quickly.
• Short vega; volatility expansion against an upside move is the adverse regime.

Strike and Tenor Design

• Set short strike above expected trading range/resistance.
• Choose wing width from allowed loss per trade, not from premium alone.
• Typical tenor 20-45 DTE; avoid tight spreads during high-gap catalysts.

Management Framework

• Harvest credit early when most extrinsic decays.
• If spot approaches short strike early, roll up/out or exit.
• Near expiration, reduce pin risk by closing if spot is close to short strike.

Failure Modes

• Selling calls in squeeze-prone names with asymmetric upside tails.
• Overconfidence in technical resistance without volatility context.
• Holding losing positions too long because max loss is "defined."

Practical Checklist

• Is break-even above your invalidation level with room for noise?
• Is spread width sized for overnight gap stress?
• Is this better than a pure directional short given borrow/liquidity constraints?