USD/JPY at the 159 line: the technical structure before the BoJ meeting
In an environment where policy variables run in both directions, organise the analysis around range boundaries rather than a directional forecast.
How the range formed
USD/JPY traded a 157.60 to 159.00 range through mid-October, closing at 158.61 on 13 October and 158.29 on 14 October, oscillating in the middle of the band. The range exists because two opposing policy variables are active at the same time.
On the downside: the Bank of Japan raised its policy rate to 1.25% on 18 September, members have taken a hawkish line on a timely hike, and speculation about official intervention in the currency market persists. The 30 October meeting is expected to hold, but December remains open. On the upside: the market prices a cumulative probability above 85% for a Fed hike before year-end, and safe-haven demand sustained by Middle East geopolitical risk is supporting the dollar.
The upper boundary: 159.00
The 159.00 area corresponds to a previous swing high and is also a zone where the market is sensitive to official intervention. As price approaches it, resistance comes not only from the chart but from policy. Confirming a genuine break requires a daily close above the level followed by a retracement that does not trade back inside the range.
The lower boundary: 157.60
The 157.60 area marks the mid-October low. A break below with a weak bounce would suggest the market is starting to price further BoJ tightening, shifting the next reference down to around 156.50. At that point, watch Japanese government bond yields in parallel: if yields rise alongside, the driver comes from policy expectations rather than short-term flows.
What to do in the middle of the range
Entering in the middle of the range, around 158.30, means placing a stop a long way from both boundaries, which usually produces a poor risk-reward ratio. The more common approach is to wait for price to reach a boundary, observe the reaction, and only then assess the trade — not to forecast direction from the middle.
Before and after the meeting
Around the 30 October meeting, reduce position size and allow a wider stop distance. The first move after a decision often carries a large emotional component. Letting the first hour pass and observing whether price returns to the pre-statement range is usually more robust than entering at the moment of release.