Why this structure behaves this way
Strap is shaped by positive delta and long vega exposure
The extra long call skews net delta positive at entry, so the position profits more from a rally than an equivalent decline. 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.