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BoJ Arbitrage Alert, Forecast Ideas for Tomorrow’s US Claims, Japan CPI: Sep 17, 2025

BoJ Arbitrage Alert, Forecast Ideas for Tomorrow’s US Claims, Japan CPI: Sep 17, 2025

Posted September 17, 2025 at 12:58 pm

Jose Torres

There’s an 83% chance the Bank of Japan will maintain its current interest rate at tomorrow’s meeting, according to our IBKR ForecastTrader. Meanwhile, odds of a raise are 13%, presenting investors with an arbitrage opportunity that can often occur in new, modern markets like ours. Folks can buy the “No Change” contract for $0.83 and the raise contract for $0.13 for a total of $0.96 and get $1.00 back regardless of policymakers hiking or remaining on hold.

Pricing of IBKR ForecastTrader Contracts regarding Bank of Japan rate decision

Playing It Safe on Volatile Claims

Initial unemployment claims have been volatile lately and reached a 47-month high in last week’s print. In light of the significant swings and recent developments signaling decelerating labor conditions, I find the risk-reward profile of the “Yes” answer at the 220k threshold attractive. It’s a level that is way below the median estimate of 240k and that hasn’t been breached since late July. It’s going for $0.94 and delivers $1.00 back to the investor on any number equal or greater than 221k. I’m avoiding the “No” answers here because another spike in filings could be in the cards soon.

Unemployment claims have been volatile
Pricing of IBKR ForecastTrader Contracts asking if unemployment claims will exceed 220,000

Range Trade Idea for Japan’s CPI

In consideration of Japan’s Consumer Price Index (CPI) hovering at 111.9, I find the pricing of some contracts south and north of that level attractive. I believe it’s unlikely that costs will decline more than 0.4% month over month (m/m) to reach the 111.4 threshold while also finding it improbable that inflation will arrive above 0.3% m/m to exceed 112.2. Against this backdrop I favor the “Yes” contracts from 110.8 to 111.4 as well as the “Nos” from 112.2 to 112.6. The values of the instruments are ranging from $0.70 to $0.95.

Pricing of IBKR ForecastTrader Contracts regarding Japan CPI

Source for Images: ForecastEx

Note: Prices are highest bids as of the morning of September 17, 2025. Red circles around the thresholds were inserted by J. Torres to highlight his preferred “Yes and No” answers throughout different levels.

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