🌍Geopolitics/POLYMARKET/May 22, 2026
polymarket market
Diplomatic event

Will the Iran ceasefire continue through July 31?

PRISM
48.9%
MARKET (PUBLISH)
43.0%
MARKET (SETTLED)
0%
MOVE
-43pp

PRISM detected 5.9pp mispricing — market held

PRISM estimated 49% against the market's 43%. This time, the market was right — a calibration data point.

PRISM MISSED0% return
ISSUED FORECASTMay 21, 2026 at 4:57 AM
MODERATE · UNDERPRICED+5.9ppPRISM 49% · Market 43%
Live view diverged · PRISM reclassified to NONE with edge now +0.6pp. The issued forecast above is the historical commitment scored on the public ledger.
PRISM
48.9%
VS
MARKET
43.0%
EDGE DETECTED5.9pp
WEAK
MODERATE
STRONG
EXTREME
OUTCOME
NO
FORECAST
MODERATE
DIRECTION
UNDERPRICED
CONFIDENCE
LOW
ACCURACY EDGE
-37
PUBLISHED
May 22, 2026
VIEW LIVE PRISM FORECASTSEdge scoring updated every 2h
1

What happened

This market resolved NO on May 26, 2026. The market's pricing turned out to be more accurate than PRISM's assessment.

Forecast Tape

4 events
  1. May 21, 4:57 AMPUBLISHED

    Prism 49% vs market 43% — MODERATE UNDERPRICED

  2. May 22, 4:09 PMRE-ANALYZED

    Forecast MODERATE → NONE at Prism 57%

  3. May 22, 4:09 PMMARKET MOVED

    Market 43% → 54% (+11pp)

  4. May 26, 1:28 AMRESOLVED NO

    Resolved NO. Market was closer than Prism on this call.

2

What the market believed

MARKET PRICE · AT FORECAST TIME
43.0%

The market was pricing this event at 43.0% probability when PRISM generated its forecast. PRISM assessed this was too low — the market was underpricing the probability.

3

What PRISM believed

PRISM PROBABILITY
48.9%
EDGE DETECTED
5.9pp
FORECAST
MODERATE UNDERPRICED
Confidence
LOW
Kelly Reference
N/A
PRISM Sizing (¼ Kelly · cap 5%)
N/A
PRISM REASONING
  • Estimated probability: 57% that no qualifying U.S
  • kinetic strike on Iranian soil occurs before the deadline
  • Narrow resolution criteria and ongoing de-escalation talks slightly favor continuation of the ceasefire
FACTORS FOR
  • +Talks reportedly ‘very close’ to agreement reduce incentive for escalation
  • +Resolution only triggers on U.S.-launched aerial bombs, drones, or missiles on Iran
  • +Lower-level or proxy clashes do not break this market’s ceasefire definition
  • +Domestic U.S. politics currently disfavor large, overt Iran escalation
FACTORS AGAINST
  • Talks still described as too early to judge final agreement
  • Regional volatility raises tail risk of sudden escalatory strike
  • No formal, published long-term ceasefire framework is confirmed
  • U.S. leaders have preserved operational flexibility for strikes if provoked
RESOLUTION PATHS MODELED
No direct U.S. aerial, drone, or missile strike on Iranian soil47%
Crisis or proxy clashes occur but U.S. avoids qualifying kinetic action10%
Evidence 45%Cluster: us-iran
SOURCES (7)
last day
  • Iran confirms receiving new ceasefire proposals from US | Geo ...youtube.com

    Iran confirms receiving new ceasefire proposals from US | Geo News 12 AM Geo Bulletin | 22 May 2026. 8.4K views · 12 hours ago.

    May 21Open →
  • Iran-US Talks | Trump Confirms Final Ceasefire Deal After ...youtube.com

    Iran-US Talks | Trump Confirms Final Ceasefire Deal After Pakistan's Big Move! Iran Shock Return #Iran #USA #IranUSWar #MohsinNaqvi #Tehran #China #UAE ...

    May 21Open →
  • Rubio says progress made in Iran talks but warns Trump has ...youtube.com

    US Secretary of State Marco Rubio says there are signs of progress in efforts to secure a deal with Iran but warns major challenges remain, ...

    May 21Open →
  • Has Trump been defeated by Iran? | ABC News Daily podcastyoutube.com

    It's almost three months since Donald Trump began the Iran war, but is there any chance that America can achieve anything that looks like victory?

    May 22Open →
  • Dan Hoffman on Iran's economic squeeze, sanctions ...foxnews.com

    Former CIA Station Chief Dan Hoffman analyzes Iran's use of ceasefire to rearm, its economic squeeze from US blockades in the Strait of Hormuz and the ...

    May 22Open →
  • Headlines for May 22, 2026democracynow.org

    Republican leaders in the House of Representatives called off a vote Thursday on a war powers resolution seeking to end President Trump's ability to strike Iran ...

    May 22Open →
  • Iran US Talks - Field Marshal Asim Munir Official Visit to Iran ...youtube.com

    Iran US Talks - Field Marshal Asim Munir Official Visit to Iran| ARY News 6PM Headlines | 22 May 26. 1K views · 25 minutes ago.

    May 22Open →

PRISM RETRIEVES EVIDENCE FROM A CURATED LIST OF PRIMARY WIRES + OFFICIAL SOURCES

4

Why the gap existed

Prism's 5.9% edge call was wrong — market was right

CALIBRATION SCORECARD
PRISM ACCURACY
0.323
MARKET ACCURACY
0.286
EDGE
-36.5
Brier edge
The market's probability estimate was more accurate than PRISM's on this call.
5

How this forecast played out

1.PRISM analyzed Will the Iran ceasefire continue through July 31?, classifying it as underpriced at 43.0%.
2.Forecast classification: MODERATE UNDERPRICED — PRISM estimate 48.9% vs market 43.0%.
3.Kelly reference at forecast time: —% (¼ Kelly, capped at 5%; mathematical reference only — not a position recommendation).
4.Outcome: resolved NO.

Get live PRISM forecasts for Kalshi + Polymarket.

Edge scores, Kelly references, confidence levels, and resolution paths — updated every 2 hours, before the market corrects.

VIEW LIVE FORECASTS
PRISM: v0.9.150-publish-autopsy·Forecasted: May 22, 2026·Resolved: May 26, 2026·polymarket
For informational purposes only. Not financial advice. EdgeCal provides PRISM-generated market analysis and does not execute trades, manage funds, or guarantee returns. Past performance does not indicate future results.