Gyrfalcon — market data and index series

Gyrfalcon Trading LLC archives order-book data from regulated event contract markets and publishes rules-based reference index series derived from it.

Each series tracks one club's season as a paper portfolio of event contracts. Positions are set by published rules with no discretion, marked continuously at a depth-weighted mid across regulated event contract markets, and fixed once a day. The rules are written down, and the series is built so that a third party holding the methodology and the public data can arrive at the same number.

Series

MLB

Open the MLB index

NFL

Open the NFL index

The archive

Order-book snapshots and candles from regulated event contract markets, collected continuously since August 2026 and stored exactly as received. Polling runs every one to five minutes for a league in season, and on a live order-book stream while markets are active.

The archive is append-only. Nothing in it is ever updated or deleted; a correction is a new record that points at what it supersedes. Every derived figure records the data version and the code version that produced it, so any number we have published can be traced back to the bytes it came from.

Who runs this

Gyrfalcon Trading LLC. Questions about the series, the methodology, or licensing: eli@gyrfalcon.trading