SimpleFunctions

20+ · Will __ ships transit the Strait of Hormuz on any day by May 31

20+ is priced at 49¢ on Polymarket. Current book: 52¢ bid, 54¢ ask, 2¢ spread. This outcome ranks #1 of 4 inside Will __ ships transit the Strait of Hormuz on any day by May 31?.

Price history

49¢ current

18¢
50¢
May 25, 2026May 25, 2026

Contract brief

This market will resolve to “Yes” if IMF Portwatch publishes a daily number of transit calls (“Arrivals of Ships”) for the Strait of Hormuz equal to or above the listed value for any date between market creation and May 31, 2026. Otherwise, this market will resolve to “No”. The number of daily transit calls/arrivals includes container, dry bulk, roll-on/roll-off, general cargo, and tanker ships. Ships not reported by IMF Portwatch will not be considered. This market will resolve as soon as IMF Portwatch publishes a daily number of transit calls equal to or above the specified level, or once data has been published for the final date in the specified period and no such value has been published. If no data has been published for the final date of the specified period within 14 calendar days (ET) after the end of that period, this market will resolve based on data published up to that point. Revisions to previously published data points, made within this market’s timeframe, will be considered. However, they will not disqualify a previously published data point from qualifying. Revisions to previously published data points after data is published for May 31, 2026, however, will not be considered. The resolution source for this market will be IMF Portwatch, specifically the transit calls data published for the Strait of Hormuz at https://portwatch.imf.org/pages/cb5856222a5b4105adc6ee7e880a1730, both in the chart and through downloadable files.

Outcome

20+

Rank

#1 of 4

Leader

20+ 52¢

Range

6¢-52¢

Family volume

$1.1M

Identifier

0x9bdb4d01...b108

May 25, 2026, 9:38 PM UTC · 18m ago

Implied probability

49¢
Latest venue quote
May 25, 2026, 9:38 PM UTC · 18m ago

Bid

52¢

Ask

54¢

Spread

24h volume

$21K

Family rank

#1 of 4

4 outcomes · Will __ ships transit the Strait of Hormuz on any day by May 31?

Closes

May 31, 2026

Family volume

$1.1M

Orderbook snapshot

52 / 54¢

Polymarket
2¢ spread
BidSize
52¢10
51¢101
50¢2.3K
49¢1.7K
48¢1.0K
47¢15
45¢473
43¢5
AskSize
54¢125
55¢250
56¢34
57¢369
58¢376
60¢210
64¢654
65¢1.6K

Contract terms

What resolves this market.

YES condition

This market will resolve to “Yes” if IMF Portwatch publishes a daily number of transit calls (“Arrivals of Ships”) for the Strait of Hormuz equal to or above the listed value for any date between market creation and May 31, 2026. Otherwise, this market will resolve to “No”. The number of daily transit calls/arrivals includes container, dry bulk, roll-on/roll-off, general cargo, and tanker ships. Ships not reported by IMF Portwatch will not be considered. This market will resolve as soon as IMF Portwatch publishes a daily number of transit calls equal to or above the specified level, or once data has been published for the final date in the specified period and no such value has been published. If no data has been published for the final date of the specified period within 14 calendar days (ET) after the end of that period, this market will resolve based on data published up to that point. Revisions to previously published data points, made within this market’s timeframe, will be considered. However, they will not disqualify a previously published data point from qualifying. Revisions to previously published data points after data is published for May 31, 2026, however, will not be considered. The resolution source for this market will be IMF Portwatch, specifically the transit calls data published for the Strait of Hormuz at https://portwatch.imf.org/pages/cb5856222a5b4105adc6ee7e880a1730, both in the chart and through downloadable files.

Venue

Polymarket

Closes

May 31, 2026

Identifier

0x9bdb4d01…b108

SF Signal
SF Index
7457.69
Regime
taker

Event family

Will __ ships transit the Strait of Hormuz on any day by May 31.

The same race as a probability stack: rank, volume, and where this contract sits against the other outcomes.

Total volume

$1.1M

Outcomes

4

Highest price

20+ 52¢

Current share

23%

Indicators

Yield, cliff risk, volatility, and regime.

CRI

1

VR

0.89

IAR

1.8/h

EE

22.000

Overround

-0.1%

LAS

0.04

Regime

taker

Score

0.625

Full indicator table

1
VR
0.89
IAR
1.8/h
22.000
Overround
-0.1%
LAS
0.04

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.