The Prediction Markets

Houthi military action against Saudi Arabia on...?

Closed
Sep 18, 2026
Traded
$123K
Venues
Polymarket
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This market has closed

Trading ended on Sep 18, 2026. The prices below are the last ones before it closed and no longer update. Browse open markets

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 3 days ago. Ages are as of when this page was built.

  • Polymarket
September 25
49.5%
Polymarket 49.5%polled, 79 h agoBest Yes 97.9¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
September 25
Last price
49.5%
As of
Polled 3 d ago
Buy Yes
97.9¢
Sell Yes
1¢
$100 on Yes pays
$102 (1.02x)
Volume
$66
Trade this on Polymarket
September 26
48.5%
Polymarket 48.5%polled, 79 h agoBest Yes 86¢ on Polymarket, $100 pays $116 (1.16x)
Polymarket
Contract
September 26
Last price
48.5%
As of
Polled 3 d ago
Buy Yes
86¢
Sell Yes
11¢
$100 on Yes pays
$116 (1.16x)
Volume
$372
Trade this on Polymarket
September 18
46.5%
Polymarket 46.5%polled, 79 h agoBest Yes 82¢ on Polymarket, $100 pays $122 (1.22x)
Polymarket
Contract
September 18
Last price
46.5%
As of
Polled 3 d ago
Buy Yes
82¢
Sell Yes
11¢
$100 on Yes pays
$122 (1.22x)
Volume
$487
Trade this on Polymarket
September 22
46%
Polymarket 46%polled, 79 h agoBest Yes 81¢ on Polymarket, $100 pays $123 (1.23x)
Polymarket
Contract
September 22
Last price
46%
As of
Polled 3 d ago
Buy Yes
81¢
Sell Yes
11¢
$100 on Yes pays
$123 (1.23x)
Volume
$632
Trade this on Polymarket
September 28
45.5%
Polymarket 45.5%polled, 79 h agoBest Yes 80¢ on Polymarket, $100 pays $125 (1.25x)
Polymarket
Contract
September 28
Last price
45.5%
As of
Polled 3 d ago
Buy Yes
80¢
Sell Yes
11¢
$100 on Yes pays
$125 (1.25x)
Volume
$1K
Trade this on Polymarket
September 24
43%
Polymarket 43%polled, 79 h agoBest Yes 75¢ on Polymarket, $100 pays $133 (1.33x)
Polymarket
Contract
September 24
Last price
43%
As of
Polled 3 d ago
Buy Yes
75¢
Sell Yes
11¢
$100 on Yes pays
$133 (1.33x)
Volume
$2K
Trade this on Polymarket
September 27
26.5%
Polymarket 26.5%polled, 79 h agoBest Yes 42¢ on Polymarket, $100 pays $238 (2.38x)
Polymarket
Contract
September 27
Last price
26.5%
As of
Polled 3 d ago
Buy Yes
42¢
Sell Yes
11¢
$100 on Yes pays
$238 (2.38x)
Volume
$516
Trade this on Polymarket
September 20
17.5%
Polymarket 17.5%polled, 79 h agoBest Yes 32¢ on Polymarket, $100 pays $313 (3.13x)
Polymarket
Contract
September 20
Last price
17.5%
As of
Polled 3 d ago
Buy Yes
32¢
Sell Yes
3¢
$100 on Yes pays
$313 (3.13x)
Volume
$2K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • September 25
  • September 26
  • September 18

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (other / general rate). Fee calculator. Estimates only, not advice.

About this market

Final prediction market prices for "Houthi military action against Saudi Arabia on...?". September 25 last traded at 49.5%. Next is September 26 at 48.5%. $123K has traded across 8 outcomes on Polymarket. The market closed on Sep 18, 2026.

This market will resolve to “Yes” if the Houthis take a qualifying military action against Saudi Arabia on the specified date, Arabia Standard Time (AST). Otherwise this market will resolve to “No.” A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by the Houthis, that directly impacts Saudi Arabia. An air strike includes bombs, air-to-surface missiles, and air-launched drones. A surface-to-surface missile strike includes one-way attack drones and surface-to-surface missiles such as cruise or ballistic missiles. The following actions do not constitute a qualifying military action: Munitions destroyed or intercepted before impact; Surface-to-air missile strikes; Small-arms fire; Ground incursions; Cyber operations; Naval gunfire and artillery fire; Howitzers, artillery pieces, mortars, and rocket artillery (e.g. MLRS systems); Minor surface-to-surface strikes, including short range loitering munitions, FPV drones, and ATGM strikes; Any threat, authorization, or announcement of force that has not been executed. Any munition that is intercepted or destroyed before impact does not constitute a qualifying military action. Debris, fragments, or any wreckage from intercepted munitions that land on Saudi Arabia do not constitute a military action regardless of any damage incurred. “Saudi Arabia” refers to the terrestrial territory of Saudi Arabia, including its internal waters. Saudi Arabia’s maritime territory and airspace are not encompassed. Where territorial borders are disputed, all territory claimed by and under the de facto control of Saudi Arabia as of market creation will qualify. The occurrence, attribution, and timing of a qualifying military action will be primarily determined based on a consensus of information available from the resolution sources. Where multiple sources conflict regarding the occurrence, attribution, or timing of a relevant military action, this market will remain open until the earlier of: i) the confirmation of the occurrence, attribution, and timing of the action based on a consensus of information available from the resolution sources or ii) 3 full calendar days (AST) from the date of the first credibly reported evidence of the action. If this period would extend past the end date, this market will remain open to allow for 3 full calendar days to pass. At the end of the third calendar day, if conflicting reports remain, the incident will be adjudicated based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this market will be official information from the government and military of Saudi Arabia and the Houthis and a consensus of credible reporting.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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