The probability that the Federal Reserve will increase interest rates by 25 basis points after the July 2026 meeting dropped sharply by 28.1 percentage points on Polymarket in the last 24 hours, falling from 35.4% to 7.2%. This significant drop occurred despite whales directing $859K in net buying toward YES contracts during the same period.
Whale buy volume of $1.39 million exceeded their sell volume of $527K, involving 243 unique whale traders, signaling strong whale interest in the YES outcome. However, this whale demand diverged from the overall price move, as indicated by the flow divergence flag. The 24-hour Polymarket volume stood at $1.26 million, representing a substantial share of the market’s lifetime volume of $14.03 million, with 9,771 unique traders participating in this market.
Polydata’s on-chain mid-price for YES contracts was 18.1%, notably higher than Polymarket’s breaking price of 7.2%, highlighting a discrepancy between the decentralized exchange’s order book data and the traded price.
This juxtaposition of falling market-implied odds and strong whale buying activity points to a complex dynamic in the market’s assessment of the Fed’s next move. The sharp price decline reflects a reassessment of the likelihood of a rate hike, while whale flow indicates continued interest or hedging on that outcome. Together, these signals underscore heightened uncertainty and active positioning in this key macroeconomic event market.
| Market | Will the Fed increase interest rates by 25 bps after the July 2026 meeting? |
|---|---|
| Market ID | 1654959 |
| 24h price change | +28.1 pp |
| YES now (PM Breaking) | 7.2% |
| YES ~24h ago (est.) | 35.4% |
| YES (Polydata overview) | 18.1% |
| Whale net flow (24h) | $859K |
| Whale buy / sell (24h) | $1.39M / $527K |
| Unique whales (24h) | 243 |
| Volume 24h (PM) | $1.26M |
| Unique traders (Polydata) | 9,771 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-15. Data: Polydata API v3. On-chain figures are public. Realized PnL is computed over resolved markets only and excludes open positions, so it is conservative versus the Polymarket UI. This is not investment advice.