Ladder of bands (ladder). 4. Multi-band
Several bands placed on day one covering a range above and below spot, never
touched. Only the rung holding the price earns, so a four-rung ladder runs at
about a quarter utilisation.
Inputs: every one has a default, so none is required:
geometry. Geometry
How the rungs are laid out
default 0, from 0 to 3 in steps of 1
0 = Equal width (contiguous). Every rung the same width in price.
1 = Geometric (contiguous). Every rung the same RATIO, so they widen
as price rises.