Bank of Japan: past results & live odds
Bank of Japan is a yearly series of prediction markets listed on Polymarket. This page tracks the event trading now, the results of the last 8 that resolved — with the odds the market gave the winner 24 hours before close — and how often the favorite of that moment actually won. Over the last 8 resolved events where the price history proves who the favorite was 24 hours before close, the favorite won 8 of 8 (100%), priced at 98% on average.
Trading now
Bank of Japan Decision in October?No change 96% · 25 bps increase 4% · 50+ bps increase <1% — resolves Oct 30, 2026 · $194K traded
- Bank of Japan Decision in December? — 25 bps increase 70%, No change 30%
Recent results
| Event | Resolved | Winner | Winner's odds 24h before | Favorite 24h before |
|---|---|---|---|---|
| Bank of Japan Decision in September? | Sep 18, 2026 | 25 bps increase | >99% | 25 bps increase >99% — won |
| Bank of Japan Decision in July? | Jul 31, 2026 | No change | >99% | No change >99% — won |
| Bank of Japan Decision in June? | Jun 16, 2026 | 25 bps increase | 99% | 25 bps increase 99% — won |
| Bank of Japan Decision in April? | Apr 28, 2026 | No change | 98% | No change 98% — won |
| Bank of Japan Decision in March? | Mar 19, 2026 | No change | 99% | No change 99% — won |
| Bank of Japan decision in January? | Jan 23, 2026 | No change | 99% | No change 99% — won |
| Bank of Japan decision in December? | Dec 19, 2025 | 25 bps increase | 97% | 25 bps increase 97% — won |
| Bank of Japan decision in October? | Oct 30, 2025 | No change | 91% | No change 91% — won |
Sources: settlements and events from Polymarket's public Gamma API; odds 24 hours before close (the earlier of the scheduled end and the actual close) from Polymarket's public CLOB price history. A “—” means the price history doesn't prove it, so that event is left out of the favorite count rather than estimated.