Trade: Bank of Japan Decision in July?
Resolution criteria on PolyGram: The Statement on Monetary Policy for the Bank of Japan's Monetary Policy meeting for July is scheduled to be released on July 31, 2026 (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market will resolve to the amount of basis points the upper bound of the short-term policy interest rate is changed by versus the level it was prior to the Bank of Japan's July 2026 meeting. If the short-term policy interest rate is changed to a level not expressed in the displayed options, the change will be rounded up to the nearest 25 and will resolve to the relevant bracket. (e.g.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
- Liquidity
- $5K
- Total Volume
- $518
- 24h Volume
- —
- Open Interest
- $507
Market outcomes
| 50+ bps decrease | 4% YES | 96% NO |
| No change | 66% YES | 35% NO |
| 50+ bps increase | 7% YES | 94% NO |
| 25 bps decrease | 5% YES | 96% NO |
| 25 bps increase | 33% YES | 67% NO |
Market context
The Bank of Japan will announce its monetary policy decision on 31 July 2026, with the Statement on Monetary Policy released that same day. This market resolves based on the change in basis points to the upper bound of the short-term policy interest rate relative to its level before the meeting. Any change not matching the displayed options will be rounded up to the nearest 25 basis points. The current crowd-implied probability of 4% YES reflects minimal expectation of a rate adjustment at this particular meeting.
The BOJ has maintained a cautious approach to policy normalisation since lifting rates from negative territory. Historical precedent suggests the central bank typically signals major shifts well in advance through forward guidance rather than surprising markets with unscheduled moves. The July meeting falls within the BOJ's regular schedule, and markets have generally priced in a hold unless explicit pre-meeting communications suggest otherwise. Previous rate decisions in 2024 and early 2025 showed the institution moving incrementally when adjusting policy, with substantial lead time given to financial markets.
Traders should monitor inflation data releases through June 2026, wage growth announcements, and any BOJ communications or speeches from Governor Ueda in the weeks preceding the meeting. Currency movements and global monetary policy shifts, particularly from the US Federal Reserve, will influence market expectations. The BOJ's quarterly Outlook for Economic Activity and Prices, typically released alongside policy decisions, may signal future direction even if July itself sees no rate change. Polymarket's order book currently reflects the low probability, with tighter spreads likely to emerge only if fresh economic data or BOJ commentary shifts expectations materially.
Wikipedia Context
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Bank of JapanThe Bank of Japan is the central bank of Japan. The bank is often called Nichigin (日銀) for short. It is headquartered in Nihonbashi, Chūō, Tokyo.
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Bank of Japan HeadquartersBank of Japan Headquarters is the head office complex of the Bank of Japan (BOJ), located in Nihonbashi, Chuo, Tokyo, Japan. It occupies a large urban block and a smaller annex on the southern side. The main building of the Bank of Japan headquarters is open for tours.
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Currency Museum of the Bank of JapanThe Currency Museum of the Bank of Japan , formally known as the Currency Museum, Institute for Monetary and Economic Studies, Bank of Japan , is a museum about Japanese currency located in front of the Bank of Japan building in Chūō, Tokyo.
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Bank JanardhanJanardhan Rao, known by his stage name Bank Janardhan, was an Indian actor in the Kannada film industry. He was well-known for his comedy and drama roles in various Kannada films and television series. Some of the notable films of Janardhan as an actor include News (2005), Shhh! (1993) and Tharle Nan Maga (1992). He acted in Kannada television serials such a
How this market resolves
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
How to trade this market step by step
The mechanics for trading "Bank of Japan Decision in July?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
- Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
- Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
- Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
- Size your position. If you stake 100 USDC at 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
- Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
- Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.
How active is this market?
$518 in lifetime turnover and $5K of resting liquidity puts this market in the below the median by volume for japan contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Key terms
- YES / NO share
- A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.
- CLOB
- Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.
- Liquidity
- USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.
- UMA optimistic oracle
- The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.
- Slippage
- The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.
- Conditional token
- ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.
Frequently asked questions
How does this market resolve?
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
When does this market close?
This prediction market is scheduled to close on 31 July 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
How can I trade on "Bank of Japan Decision in July?"?
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
What happens when the market resolves?
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Risk and regulatory note
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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