What is the Nostra score?
A 0 to 100 rating of a trader’s skill, re-scored every week.
Definition
The Nostra score is a 0 to 100 rating of a Polymarket trader’s track record, built from public data and re-scored every week.
In more detail
It weighs win rate (35%), return on money staked (25%), months finished in profit (20%), how many resolved positions it rests on (10%) and total realised profit (10%).
Traders need at least 30 resolved positions to be ranked, so one lucky bet can’t top the list. A score describes past results and doesn’t predict future ones.
How Nostra uses it
Every trader page, leaderboard and smart group in Nostra uses the score.
How the score worksRelated terms
Keep exploring
More from Nostra: rankings by topic, trader profiles, smart groups and plain-English guides.
Polymarket glossary
All 20 terms, from odds and resolution to smart money.
Top traders
Profiles for the 500 best-scored Polymarket traders, with stats and recent calls.
Smart groups
20 self-updating groups, from The Nostra 30 to Weather Wizards.
Smart money
Markets where 3 or more top-scored traders back the same side, checked every 6 hours.
How the score works
What goes into a Nostra score, how often it updates and where it falls short.
Guides
Plain-English guides to finding and following traders on Polymarket.
Nostra for iPhone
See Polymarket’s smart money on your iPhone
Nostra scores about 1,750 traders every week and lets you know when the best of them make a move.
Free to download · iPhone