Why this structure behaves this way
Bull Call Ladder is shaped by positive delta and short vega exposure
The two short calls outweigh the single long call, leaving net short gamma and vega above the short strikes. Delta starts positive near the long strike and fades to negative if the stock runs past the upper short strike.
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.