Grade C · 62%RelatedOutcome mapping: inverse

Kalshi vs Polymarket: Tom Nolan wins

Two contracts on the same event, priced by two separate crowds. Where they disagree, one of them is wrong — or the contracts are not quite the same question.

Live comparison
Kalshi
99.0%
—
Polymarket
55.5%
+2.0 pts up
Disagreement
43.5 pts
Match confidence
62%
Theoretical edge
none

Side by side

MetricKalshiPolymarket
Probability99.0%55.5%
1h move—+2.0 pts up
24h move—+2.0 pts up
7d move—+11.5 pts up
24h volume$1.52M$615K
Liquidity—$146K
Spread—1.0¢
Open interest1,114,207—
ClosesOct 31, 22:50 ETOct 31, 23:59 ET
Resolution sourcehttps://www.dazn.com/en-UShttps://www.ufc.com/events
ContractOpen →Open →

Probability history

Both venues on one axis, with the gap beneath
KalshiPolymarket
No history available for this range yet.

How confident is this match?

Deterministic scoring first; the model may only downgrade
Title
65%
Entities
20%
Dates
86%
Threshold
100%
Polarity
85%
Rules
48%

Deterministic score 62%. Not yet semantically verified.

Soft flags
  • resolution_sources_differ
  • tie_handling_differs
  • data_release_rules_differ

A soft flag is an ambiguity the deterministic rules noticed but could not resolve. Any one of them keeps a pair out of Grade A.

These contracts have not been semantically verified yet, so no rule-by-rule comparison is available. The grade rests on deterministic scoring alone.

Theoretical cross-market edge

Grade A pairs only, from executable book prices with depth simulation
Theoretical edge is calculated only for Grade A pairs, where the two contracts appear materially equivalent for settlement analysis. This pair is graded C, so the venues are compared for probability and sentiment only.

Why are these diverging?

Explanation pending

An evidence-grounded explanation is written once this market gathers enough confirmed price and trade evidence. Every number on this page is already live.

Event timeline

No timeline events yet

Timeline entries appear once price or trade activity crosses a reporting threshold.

Notable trades on both venues

Past 24 hours, ranked by notional
MarketVenueTimeSidePriceSizeNotionalBefore+5 minMoveImpact
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:28 ET4 h agoTom Nolan buy45.0%121K$54,29555.5%71.5%+16.0 pts upExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:29 ET4 h agoTom Nolan buy45.0%107K$48,05554.5%64.0%+9.5 pts upExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:28 ET4 h agoTom Nolan buy45.0%73K$32,77055.5%71.5%+16.0 pts upExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:29 ET4 h agoTom Nolan buy45.0%18K$7,89154.5%64.0%+9.5 pts upExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:29 ET4 h agoTom Nolan buy45.0%18K$7,88654.5%64.0%+9.5 pts upExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:40 ET3 h agoTom Nolan buy31.0%24K$7,55270.0%0.5%−69.5 pts downExceptional
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket23:05 ET3 h agoTom Nolan sell99.9%2.6K$2,562———Normal
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:42 ET3 h agoTom Nolan buy72.0%3.0K$2,135———Normal
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:44 ET3 h agoTom Nolan buy98.3%2.0K$1,924———Normal
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:43 ET3 h agoTom Nolan buy86.4%2.2K$1,920———Normal
UFC Fight Night: Renato Moicano vs. Tom Nolan (Lightweight, Main Card)Sports · Polymarket ↗Polymarket22:48 ET3 h agoTom Nolan sell99.9%1.7K$1,730———Normal