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Card 325 of 9752026-09-18 issue

Observed arrival · 2026-09-18

FESC: the derivatives-equivalence workbench

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Editorial interest 84/100 Selection signal · not a rating of the site

A research demo that finds alternative options-and-forward structures, verifies their payoffs exactly, and compares their estimated implementation costs.

Landing page captured for the 2026-09-18 issue.
For
Derivatives researchers and structured-trade designers
Worth noticing
It reduces structures to exact piecewise-linear payoffs over the union of their strikes, with no sampling tolerance.

Field notes

The workbench separates payoff identity from contract identity: structures are reduced across the union of their strikes, while settlement time, fixing, currency, rounding, and multiplier remain material metadata. Its examples include a mixed call/put/forward inventory with three verified alternatives and a forward spread that collapses to dated cash. Cost is calculated independently from equivalence, using bid, ask, and fee inputs; displayed quotes are illustrative rather than executable.

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PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

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Landing page observed 2026-09-18. The live site may have changed.