PMCPredictMarketCap
ArbitrageCross-PlatformThe Forecast
TrendingCryptoPoliticsSportsEconomicsEntertainment
PredictMarketCapPredictMarketCap
CategoriesTrending

Data from Polymarket, Kalshi & Limitless

Total Active Markets
Count of all non-resolved markets currently tracked across Polymarket, Kalshi, and Limitless.
109,704
Total Volume
Lifetime trading volume across all platforms. Polymarket and Kalshi report volume directly; Limitless volume is cumulative USDC traded.
$5,511,063,202
24h Volume
24-hour trading volume. Polymarket and Kalshi report this directly. Limitless does not break out 24h volume separately, so it is not included.
$448,344,933
Total Open Interest
Polymarket: sum of pool liquidity. Kalshi: open interest (contracts outstanding). Limitless: uses total volume as a proxy — no separate OI metric is available.
$2,572,636,101
PMPolymarket$2.21BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.KLKalshi$343.43MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.LMLimitless$16.90MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.
AnalysisMarch 17, 2026

What $250M in Prediction Markets Says About the Iran War

Since US-Israel strikes began on February 28, traders on Polymarket and Kalshi have wagered over a quarter billion dollars on the war's trajectory — from regime change and ceasefire timelines to oil price thresholds and Iranian retaliation. Here's what the money says.

By PredictMarketCap Editorial Team|40+ markets, $258.0M volume
$36M
Regime change volume
77%
Oil hits $100/bbl
14%
Ceasefire by Mar 31
24%
US ground forces enter

The Oil Price Probability Curve

The most striking dataset isn't a single market — it's the full set of crude oil threshold markets on Polymarket. Together, they reveal the market's implied probability distribution for where oil prices are heading by end of March. And the shape of that distribution tells a nuanced story about how traders are pricing supply disruption risk.

Oil Price ThresholdProbabilityPeak (10 days)ImpliedVolume
$85/bbl100%100%
$5.8M
$90/bbl100%100%
$1.8M
$95/bbl100%100%
$2.3M
$100/bbl77%99%
$7.2M
$105/bbl68%—
$2.0M
$110/bbl50%93%
$3.6M
$120/bbl28%84%
$3.6M
$130/bbl18%—
$1.5M
$140/bbl10%—
$1.2M
$150/bbl7%37%
$5.2M
$180/bbl2%9%
$2.4M
$200/bbl1%9%
$5.8M

The key insight: Oil at $110 is a coin flip (50%). But the tail risk has collapsed — $150 oil was at 37% last week and is now at 7%. $200 oil peaked at 9% and is now 1%. Traders initially priced in a severe supply shock scenario (Hormuz closure, sustained Iranian counterstrikes on Gulf oil facilities) but have since dialed that risk way down. The market is saying: oil will be expensive, but not catastrophically so.

The $120 threshold saw the most dramatic swing: it peaked at 84% probability before falling to 28% today. That 56-percentage-point collapse over 10 days represents a massive repricing of the war's economic impact.

Deep dive: The Anatomy of a War Premium — hour-by-hour data showing how each major event (Hormuz closure, Russia waiver, selective ship passage) reshaped the full oil probability curve in real time.

Regime Change: The Market Is Skeptical

Despite the stated US goal of “inducing regime change,” prediction markets are increasingly bearish on it happening quickly. Every regime change market has declined over the past 10 days, with the $36M “regime fall by March 31” contract dropping from 13% to 3%.

Will the Iranian regime fall by March 31?Polymarket
Mar 7: 13%→Now: 3%↓ -10pp$35.8M
Will the Iranian regime fall by June 30?Polymarket
Mar 7: 33%→Now: 27%↓ -6pp(peaked 34%)$18.1M
Will the Iranian regime fall before 2027?Polymarket
Mar 7: 44%→Now: 39%↓ -5pp(peaked 45%)$10.5M
Will the Iranian regime fall by April 30?Polymarket
Mar 7: 23%→Now: 13%↓ -10pp$6.2M
Khamenei out as Supreme Leader of Iran by June 30?Polymarket
Mar 7: 100%→Now: 100% flat$8.2M
Iran leadership change by March 13?Polymarket
Mar 7: 10%→Now: 0%↓ -9pp(peaked 14%)$5.6M

Note the timeline structure: March 31 is at 3%, April 30 at 13%, June 30 at 27%, before 2027 at 39%. The market is saying regime change is possible but not fast — and the longer the timeline, the higher the probability. This is consistent with a view that airstrikes alone won't topple the regime, but sustained pressure might.

Ceasefire: Don't Hold Your Breath

The ceasefire markets tell a clear story: this war isn't ending soon. Ceasefire by March 15 peaked at 18% before resolving to 0%. March 31 ceasefire has fallen from 27% to 14%. Even April 30 — two months out — is only at 41%.

US x Iran ceasefire by March 15?Polymarket
Mar 7: 9%→Now: 0%↓ -8pp(peaked 18%)$11.7M
US x Iran ceasefire by March 31?Polymarket
Mar 7: 27%→Now: 14%↓ -13pp(peaked 45%)$10.6M
US x Iran ceasefire by April 30?Polymarket
Mar 7: 50%→Now: 41%↓ -9pp(peaked 60%)$2.7M
Iran x Israel/US conflict ends by March 15?Polymarket
Mar 7: 5%→Now: 0%↓ -5pp(peaked 11%)$3.0M

Interestingly, the ceasefire markets saw brief spikes (March 15 reached 18%, March 31 reached 45%) before collapsing. These spikes likely correspond to diplomatic signals or rumors that the market quickly dismissed as the military campaign continued.

Escalation Risk: Ground Invasion Unlikely, But Not Impossible

“US forces enter Iran by March 31” is one of the most volatile markets — it peaked at 55% before falling to 24%. The market swung 33 percentage points in 10 days, reflecting genuine uncertainty about escalation.

US forces enter Iran by March 31?Polymarket
Mar 7: 34%→Now: 24%↓ -11pp(peaked 55%)$10.8M
US forces enter Iran by March 14?Polymarket
Mar 7: 19%→Now: 0%↓ -18pp(peaked 28%)$9.6M
Will France, UK, or Germany strike Iran by March 31?Polymarket
Mar 7: 19%→Now: 5%↓ -14pp(peaked 23%)$3.9M
Will another country strike Iran by March 31?Polymarket
Mar 7: 50%→Now: 17%↓ -34pp(peaked 65%)$2.9M
Will the US officially declare war on Iran?Polymarket
Mar 7: 1%→Now: 1% flat(peaked 2%)$3.1M
US/Israel strike on Fordow nuclear facility by March 31?Polymarket
Mar 7: 30%→Now: 19%↓ -11pp$440K

The coalition question: “Will France, UK, or Germany strike Iran?” dropped from 19% to 5%, and “Will another country strike Iran?” fell from 50% to 17%. The market has largely concluded this remains a US-Israel operation without broader coalition involvement. Meanwhile, formal war declaration sits at a persistent 1% — traders expect continued operations without congressional authorization.

Iranian Retaliation: Confirmed and Priced

The retaliation markets confirm what's already happened: Iran struck Israel on March 4 and again on March 10 (both resolved at 100%). The Strait of Hormuz closure market is also at 100%, confirming at least a partial blockade has occurred. These resolved contracts represent over $50M in trading volume.

Will Iran strike Israel on March 10?Polymarket
Mar 7: 46%→Now: 100%↑ +54pp$20.3M
Will Iran strike Israel on March 6?Polymarket
Mar 7: 31%→Now: 0%↓ -30pp(peaked 39%)$19.1M
Will Iran strike Israel on March 4?Polymarket
Mar 7: 100%→Now: 100% flat$6.4M
Will Iran close the Strait of Hormuz before 2027?Polymarket
Mar 7: 97%→Now: 100%↑ +3pp$5.5M

What the Money Is Saying

Taken together, $250M+ in prediction market volume paints a coherent picture of how traders — putting real money on the line — expect this conflict to unfold:

  1. The war continues through March and likely beyond. Ceasefire by March 31 is at 14%. Even April 30 ceasefire is below 50%. Traders expect sustained military operations.
  2. Regime change is possible but slow. The declining trajectory of regime change markets (from 13% to 3% for March, with longer timelines holding higher) suggests airstrikes alone won't be decisive. The market prices a ~40% chance of regime change before 2027.
  3. Oil will be expensive but not catastrophic. The implied distribution centers around $100–$110/bbl. The tail risk of $150+ oil has largely been priced out, suggesting traders believe the Hormuz disruption will be limited or that alternative supply routes will compensate.
  4. Ground invasion is unlikely. Peaked at 55% but now at 24%, the ground forces market suggests the campaign will remain primarily aerial.
  5. This stays US-Israel. Coalition involvement has been priced down to single digits. NATO expansion of the conflict is not what the market expects.

Methodology

This analysis covers 40+ prediction markets on Polymarket and Kalshi related to the 2026 Iran conflict, oil prices, and associated geopolitical events. Price data spans March 7–17, 2026 (PredictMarketCap began tracking these markets on March 7). “First price” refers to the earliest recorded price in our dataset, not the market's opening price. Volume figures represent total all-time volume traded per contract. All probabilities represent real-money market prices, not editorial predictions. Data sourced from platform APIs and updated continuously.

Track these markets live

All markets in this analysis update in real time on PredictMarketCap.

Politics MarketsEconomics MarketsArbitrage Scanner
Published March 17, 2026predictmarketcap.com