PolymarketOtherDevelopingUpdated 5m ago

Bab el-Mandeb Strait effectively closed by November 30?

As of Oct 16, 2026, 8:47 PM ET, Polymarket priced this market at 11.5% (little changed over 24 hours). It had $38.7K traded in the past 24 hours, $121.4K of order-book liquidity and a bid-ask spread of 1.0 pts. probcast.co rates the support behind this price as moderate.

Market probability
11.5%
Little changed over 24 hours

Thin market where small orders can move the price, traded by a small group of accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

ThinTight spread

Order-book liquidity

$121.4K

Bid-ask spread

1.0 pts

24h volume

$38.7K

Total volume

$42.6K

It would take roughly $8.6K of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

A few accounts
40%of the traded money came from the single largest account

Accounts

37

Trades

45

over 3 days

Largest order

$1.5K

$4.5K traded across these 45 trades (last 3 days).

A small group of accounts did most of the trading — neither one whale nor a broad crowd.

Recent trade activity$4.5K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to “Yes” if IMF PortWatch publishes a 7-day moving average of transit calls (“Arrivals of Ships”) for the Bab el-Mandeb Strait less than or equal to 10 for any date between market creation and the listed date. Otherwise, this market will resolve to “No”.

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to “Yes” if IMF PortWatch publishes a 7-day moving average of transit calls (“Arrivals of Ships”) for the Bab el-Mandeb Strait less than or equal to 10 for any date between market creation and the listed date. Otherwise, this market will resolve to “No”. This market will resolve as soon as IMF PortWatch publishes a 7-day moving average of transit calls for the Bab el-Mandeb Strait equal to or below 10, or once data has been published for the listed date and no such value has been published. If no data has been published for the listed date within 14 calendar days (ET) after that date, this market will resolve based on the data published up to that point. Revisions to previously published data points made before data has been published for the listed date will be considered; however, they will not disqualify a previously published data point from qualifying. Revisions made after data has been published for the listed date will not be considered. The resolution source for this market will be IMF PortWatch, specifically the “Arrivals of Ships” data published for the Bab el-Mandeb Strait at https://portwatch.imf.org/pages/6b1814d64903461b98144a6cc25eb79c.

Resolution source: portwatch.imf.org

What could move this market next?

  • The market's deadline arrivesNovember 30, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

  • Confirmation at the resolution source (portwatch.imf.org)

    The rules name this source as the basis for settlement.

Derived from the contract's own mechanics as of Oct 16, 8:52 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Probability by deadline

The same event, priced across deadline contracts on this venue.

Extending the deadline from Nov 30 to Dec 31 adds about 5.5 percentage points of implied probability.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±14 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

medium classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
49Medium
Where the price path tends to go next1430 observed
  • Choppy / mean-reverting98%
  • Stable consensus1%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~4w
PredictabilityStable

Secondary read: leaning toward Thin market.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Change (pts)1H0.06H0.024H0.07D0.0

Related markets