Hourly Briefing ·
2 stories in this edition: Next US-Iran senior diplomatic meeting by December 31, 2026 priced at 43.0% on Polymarket, down 4.5 points, on $292K traded · Federal Reserve Hike rates by 0bps at their December 2026 meeting priced at 26.0% on Kalshi, up 6.0 points, on $763K traded
PredictionBubbles' movers board, on the same Oct. 30, 14:56 UTC crawl, lists the US-Iran senior diplomatic meeting contract among its downward political moves, in a…
No significant new platform headline in the last 30 minutes led this edition; news search recirculated only items already used or held out today (the Spain DGOJ licence…
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Polymarket’s contract on whether the next senior US-Iran diplomatic meeting will occur by December 31, 2026 was priced at 43.0%, down 4.5 probability points, with $292K traded in the supplied October 30 market snapshot.
According to PredictionBubbles’ movers board, the contract appeared among declining political markets in its Oct. 30, 14:56 UTC crawl. The price put a meeting before the deadline below an even chance in market-implied terms.
PredictionBubbles measures moves over 24 hours using probability-point changes, rather than relative percentage changes. The 4.5-point decline therefore describes a shift in the contract’s implied probability, not a 4.5% relative fall.
The supplied source page carries a later refresh timestamp of 30 Oct 2026, 15:12 UTC. PredictionBubbles says it updates the board every 15 minutes using prices from Polymarket and Kalshi. That later page timestamp is distinct from the crawl associated with the US-Iran contract in the supplied summary.
The material does not identify a diplomatic announcement or other specific catalyst for the decline. Nor does it provide the contract’s detailed settlement criteria or order-book depth. The reported trading volume offers context, but does not by itself establish how much liquidity was available when prices moved.
Kalshi’s contract on a 0bps Federal Reserve rate move at its December 2026 meeting was priced at 26.0%, up 6.0 percentage points over 24 hours, with $763K traded, as reported in the Oct 30, 2026, 11:24 AM ET update.
The contract concerns an unchanged rate outcome, despite using “Hike” in its wording. According to predictionbubbles.net, the question was the largest mover highlighted in its finance category.
The accompanying summary identified no significant new platform headline in the preceding 30 minutes. It said the news search had resurfaced material already used or excluded that day, leaving the supplied reporting without an identified fresh catalyst for the Fed contract’s move.
According to predictionbubbles.net, the underlying venue-price snapshot was taken on 30 Oct 2026 at 15:12 UTC. Its rankings cover Polymarket and Kalshi, refresh every 15 minutes and measure changes over a 24-hour window.
The tracker ranks markets by the absolute size of their probability-point moves, rather than by trading volume. The $763K traded provides context for the repricing, but the supplied material does not establish order-book depth or explain which trades drove the shift.