Fed Decision in December draws $298K in 24 hours, with a 25 bps increase at 79%

The December Fed decision market showed a 79% implied probability of a 25 bps increase, according to polydict.app’s Polymarket snapshot dated Oct 15, 04:52 AM UTC. The listing recorded $299K in trading volume over 24 hours and an end date of Dec 10, 2026.

The supplied headline put that volume at $298K, while the source board displayed $299K. Both gave the increase outcome a 79% probability. The material does not explain the volume discrepancy or provide an earlier odds reading to establish whether expectations had changed.

October and December show different expectations

The October Fed decision market favored no change at 76%, according to polydict.app. Its 24-hour volume was $5.3M, and its listed end date was Oct 29, 2026. It appeared first on the supplied board, compared with December’s position at 28.

Together, the two listings show different leading outcomes for the two decisions: unchanged rates in October and a 25 bps increase in December. Each listing also indicated four additional outcomes, but the supplied snapshot did not show their individual prices. These readings therefore do not establish the probability of a combined October-to-December policy path.

A market snapshot, not a policy announcement

The supplied summary reported no significant new platform headline during the preceding 15 minutes. The figures offer a view of trading activity and implied expectations, rather than evidence of a newly announced Fed decision or an identified catalyst for repricing.

According to polydict.app, the displayed markets use Polymarket’s order book and settle under its contracts. Shares trade between $0 and $1, with a successful outcome paying $1 per share and an unsuccessful outcome paying nothing; resolution depends on the applicable rules and source.

What it means for prediction markets

• December pricing favors an increase: The 79% reading makes a 25 bps increase the displayed leading outcome, not a confirmed policy result.
• October attracts more trading: The October contract’s $5.3M in 24-hour volume substantially exceeds December’s $299K, despite their different leading outcomes.
• Direction of movement is unproven: A single odds snapshot cannot show whether traders have recently become more or less confident in a December increase.
• Contract details remain important: Listed end dates and displayed probabilities do not replace the rules governing settlement.