Economics & Macro · Arbitrage#188

Fed-Funds Futures Implied-Path Import

The fed funds futures market prices the expected policy rate at every upcoming meeting, and billions of dollars of hedging keep it honest. Converting those contracts into a per-meeting cut or hike probability is arithmetic, not forecasting. Whenever Polymarket's rate-decision market disagrees with the futures-implied number by more than fees, you take the futures side — you are importing a far deeper market's consensus rather than forming a view on the economy.

What you need to run it

  • CME fed funds and SOFR futures data with the standard implied-probability conversion
  • Handling for meeting-date mechanics and mid-month settlement conventions
  • Automated comparison and alerting when the two venues diverge

Where this applies

Markets on Polymarket where fed-funds futures implied-path import is the natural play:

  • Will the Fed cut rates at the September 2026 meeting?
  • Will the Fed hold rates steady through the end of 2026?
  • Will there be at least two rate cuts in 2027?

Capabilities this demands

Multi-venueData ingestionCustom code / API

At a glance

CategoryArbitrage
MarketEconomics & Macro
Requirements3
CapabilitiesMulti-venue, Data ingestion, Custom code / API
VenuePolymarket (CLOB, Polygon)

Build it

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