🏛Politics/POLYMARKET/May 26, 2026
polymarket market
Diplomatic event

US announces new Iran agreement/ceasefire extension by June 7?

PRISM
78.0%
MARKET (PUBLISH)
60.5%
MARKET (SETTLED)
0%
MOVE
-61pp

PRISM detected 10.0pp mispricing — market held

PRISM estimated 78% against the market's 61%. This time, the market was right — a calibration data point.

PRISM MISSED-100% return
ISSUED FORECASTMay 26, 2026 at 10:23 PM
MODERATE · UNDERPRICED+10.0ppPRISM 78% · Market 61%
PRISM
78.0%
VS
MARKET
60.5%
EDGE DETECTED10.0pp
WEAK
MODERATE
STRONG
EXTREME
OUTCOME
NO
FORECAST
MODERATE
DIRECTION
UNDERPRICED
CONFIDENCE
MEDIUM
ACCURACY EDGE
-242
PUBLISHED
May 26, 2026
VIEW LIVE PRISM FORECASTSEdge scoring updated every 2h
1

What happened

This market resolved NO on June 8, 2026. The market's pricing turned out to be more accurate than PRISM's assessment.

Forecast Tape

4 events
  1. May 24, 4:08 PMPUBLISHED

    Prism 76% vs market 76% — NONE FAIR

  2. May 25, 12:08 PMMARKET MOVED

    Market 76% → 57% (-18pp)

  3. May 26, 10:23 PMRE-ANALYZED

    Forecast NONE → MODERATE at Prism 78%

  4. Jun 8, 6:03 AMRESOLVED NO

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

2

What the market believed

MARKET PRICE · AT FORECAST TIME
60.5%

The market was pricing this event at 60.5% probability when PRISM generated its forecast. PRISM assessed this was too low — the market was underpricing the probability.

3

What PRISM believed

PRISM PROBABILITY
78.0%
EDGE DETECTED
10.0pp
FORECAST
MODERATE UNDERPRICED
Confidence
MEDIUM
Kelly Reference
N/A
PRISM Sizing (¼ Kelly · cap 5%)
N/A
PRISM REASONING
  • Verified reporting indicates a ceasefire extension framework is 95% complete but lacks a formal US announcement
  • The short deadline and requirement for a public statement create execution risk
FACTORS FOR
  • +Draft MOU includes 60-day ceasefire extension
  • +Both sides report deal is 95% complete
FACTORS AGAINST
  • No formal US announcement yet
  • Short window to June 7
RESOLUTION PATHS MODELED
US formally announces finalized MOU with ceasefire extension65%
US announces simple ceasefire extension without full MOU13%
Evidence 55%Cluster: us-iran
SOURCES (5)
last day
  • U.S. and Iran Close in on a Framework Accord - The Soufan Centerthesoufancenter.org

    ... agreement and extends, for at least 60 days, the ceasefire in place since April 7. During that time (which can be extended by mutual consent), the two ...

    May 26Open →
  • As Trump pursues Iran agreement, Republicans split over next stepse.jewishinsider.com

    Among the details reportedly in the draft agreement: a 60-day extension of the ceasefire, a lifting of the U.S. blockade of the Strait of Hormuz, Iran's ...

    May 26Open →
  • Iran live updates: Iran's internet blackout partially lifted after 87 daysabc7chicago.com

    Trump later announced the open-ended extension of the ceasefire and the continuation of a U.S. blockade until negotiations are concluded "one way or the other.".

    May 26Open →
  • Iran deal progress is murky after US military says it carried out 'self ...whec.com

    President Donald Trump insists a peace deal is close on the 88th day of the Iran war, but Iran on Tuesday denounced U.S. airstrikes as a sign of “bad faith ...

    May 26Open →
  • Washington | International Crisis Groupcrisisgroup.org

    President Trump described negotiations with Iran as "proceeding nicely", and went into to call for an expansion of the Abraham Accords that "should start with ...

    May 26Open →

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

4

Why the gap existed

Prism's 17.5% edge call was wrong — market was right

CALIBRATION SCORECARD
PRISM ACCURACY
0.608
MARKET ACCURACY
0.366
EDGE
-242.4
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 US announces new Iran agreement/ceasefire extension by June 7?, classifying it as underpriced at 60.5%.
2.Forecast classification: MODERATE UNDERPRICED — PRISM estimate 78.0% vs market 60.5%.
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: v0.9.185-analysis-path-replacement·Forecasted: May 26, 2026·Resolved: June 8, 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.