Recent July core CPI data showing a pickup to 1.8% year-over-year, with the underlying measure excluding fresh food and energy at 1.9%, alongside yen weakness near 160, have reinforced trader expectations for a 25 basis point rate increase at the Bank of Japan's September 17-18 meeting. Persistent price pressures from import costs, Middle East developments, and robust global demand have prompted internal BOJ signals favoring an earlier and potentially accelerated pace of tightening from the current 1% policy rate. Market-implied odds reflect this consensus, supported by government alignment and upcoming official speeches that could further clarify the path. The decision remains data-dependent ahead of the resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated25 bps increase 86%
No change 13%
50+ bps increase 1.0%
50+ bps decrease <1%
$345,681 Vol.
$345,681 Vol.
50+ bps decrease
<1%
25 bps decrease
<1%
No change
13%
25 bps increase
86%
50+ bps increase
1%
25 bps increase 86%
No change 13%
50+ bps increase 1.0%
50+ bps decrease <1%
$345,681 Vol.
$345,681 Vol.
50+ bps decrease
<1%
25 bps decrease
<1%
No change
13%
25 bps increase
86%
50+ bps increase
1%
The resolution source will be official information from the Bank of Japan, including the statement or release from its September 2026 meeting, scheduled for September 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s September 2026 meeting with relevant data is issued.
If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound.
If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size.
If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.
Market Opened: Jun 17, 2026, 7:24 PM ET
Resolver
0x69c47De9D...The resolution source will be official information from the Bank of Japan, including the statement or release from its September 2026 meeting, scheduled for September 17-18, 2026, as listed on the official Bank of Japan calendar (https://www.boj.or.jp/en/mopo/mpmsche_minu/index.htm). This market may resolve as soon as the statement or release of the Bank of Japan’s September 2026 meeting with relevant data is issued.
If the specified rate is defined by an upper and lower bound, the relevant change will be the change to the upper bound.
If the specified rate is changed to a level not expressed in the displayed options, the change will be rounded according to the following guidelines. Increases or decreases of less than 25 bps will be rounded to 25 bps (e.g. an increase or decrease of 10 bps would be considered to be an increase or decrease of 25 bps). Increases or decreases of greater than 25 bps will be rounded to the nearest 25 bps and will be rounded away from 0 in cases of equidistance (e.g., an increase or decrease of 37.5 bps would be considered to be an increase or decrease of 50 bps). Displayed options of “Increase” or “Decrease” will include policy rate increases or decreases of any size.
If the specified meeting is postponed to a date and time before the start of the next scheduled meeting, this market will resolve based on the outcome of that postponed meeting. If the specified meeting is cancelled, or postponed such that no decision is announced by the start of the next scheduled meeting, this market will resolve to the “No Change” bracket. Emergency changes to the specified rate not resulting from the specified meeting will not be considered.
Resolver
0x69c47De9D...Recent July core CPI data showing a pickup to 1.8% year-over-year, with the underlying measure excluding fresh food and energy at 1.9%, alongside yen weakness near 160, have reinforced trader expectations for a 25 basis point rate increase at the Bank of Japan's September 17-18 meeting. Persistent price pressures from import costs, Middle East developments, and robust global demand have prompted internal BOJ signals favoring an earlier and potentially accelerated pace of tightening from the current 1% policy rate. Market-implied odds reflect this consensus, supported by government alignment and upcoming official speeches that could further clarify the path. The decision remains data-dependent ahead of the resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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