Why this structure behaves this way
Strip is shaped by negative delta and long vega exposure
The extra long put skews net delta negative at entry, so the position profits more from a decline than an equivalent rally. Both legs bleed theta and gain from IV expansion like a straddle, just asymmetrically weighted.
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.