BEARISH
Short Combo Strategy Lab
What is a short combo?
A short combo is the bearish mirror of the long combo: sell an out-of-the-money call and buy an out-of-the-money put, approximating a short stock position.
It's flat between the two strikes but behaves like short stock beyond them — profiting as the stock falls below the put strike and losing without limit if it rallies past the call strike.
Execution Legs:
1
Buy an OTM put at strike A.
2
Sell an OTM call at strike B (higher).
BearishHigh ProfitUnlimited Loss
Institutional Playbook & Ideal Timing
🎯 Ideal Timing & Volatility Environment:
High IV regime (IV Rank > 50%) where options premiums are overpriced. Ideal right before/after earnings for IV crush, during elevated market fear/VIX spikes, or in rangebound consolidation between Put and Call Walls.
🎯 Strike & DTE Target:
45 to 60 DTE. Buy ATM 50-delta Put to capture high downside velocity.
🛡️ Exit & Risk Rules:
Take profit at 50% of max profit (for credit/neutral) or 100%–200% ROI (for debit). Cut losses at 100% of debit paid (or 2x credit collected). Close before expiration if delta expands beyond 70.
Greeks Sensitivity & Mechanics
🛡️ −Vega (Short Vol)
Benefits from IV drop (IV crush). Avoid buying before vol spikes.
⏳ +Theta (Decay Income)
Earns time value decay every day that passes without moves.
⚠️ −Gamma (Pinning)
Risk accelerates on wild moves; prefers stable consolidation.
Directional Bias (Δ)
Negative Delta (−Δ): Profits as underlying stock drops.
Interactive Payoff Simulator
Expiration Payoff
Interactive Parameters
Stock Price ($)
$100.00
Days to Expiry (DTE)
30 Days
Lower Strike A ($)
$90.00
Higher Strike B ($)
$110.00
Max Profit
Unlimited
Max Loss
Substantial
Breakeven
$107.50
Risk / Reward
1 : 1.50
Net Delta (Δ)
-0.42
Net Gamma (Γ)
+0.015
Net Theta (Θ)
-1.80
Net Vega (ν)
+3.50