Home/Options strategies/Scenario Lab · Put Ratio Backspread

Bearish strategy · Scenario Lab

Test a Put Ratio Backspread across possible paths

Market outlook Strongly bearish

Short higher-strike put with two long lower-strike puts. Use the lab to see how the position responds before committing to a single forecast.

Scenario Lab

See how the position changes

Move the underlying, clock, and implied volatility independently. Values before expiration use a Black–Scholes estimate; expiration values use intrinsic payoff.

Sell put 1
Buy put 2

The catalog’s default strikes and premiums are illustrative. No ticker lookup or market data is used.

Selected scenario
Estimated P/L before expiration by underlying move and time remaining
UnderlyingToday30 days14 days7 daysExpiration
-15%
-10%
-5%
0%
+5%
+10%
+20%
IV lens

At expiration

Intrinsic payoff checkpoints

Time value has gone to zero. IV no longer changes the result.

Profit or loss at expiration
UnderlyingMoveP/L
-15%
-10%
-5%
0%
+5%
+10%
+20%

Model boundary: theoretical estimates use dividend-adjusted Black–Scholes for European exercise or a 100-step binomial estimate for American exercise. Fees, spreads, discrete dividend dates, early assignment behavior, and liquidity effects are excluded. Calculation, not advice.

Why this structure behaves this way

Put Ratio Backspread is shaped by negative delta and long vega exposure

Extra long puts give net positive gamma and vega below the strike — the position benefits from a sharp drop and rising IV. Theta bleeds against you while the stock sits between strikes.

This page uses the catalog’s illustrative default legs so you can compare direction, time, and volatility effects in one place. Edit the assumptions above to test a different starting point.