Pound Sterling retreats as Japanese Yen attracts modest buying

• GBP/JPY edges lower as the Japanese Yen strengthens across the board.
• Intervention fears and expectations of a September BoJ rate hike support the Yen.
• The Pound Sterling lacks a fresh catalyst as UK markets close for the Summer Bank Holiday.

GBP/JPY trades on the back foot on Monday as the Japanese Yen (JPY) strengthens against its major peers. The Pound Sterling (GBP), meanwhile, lacks a fresh domestic catalyst as UK markets remain closed for the Summer Bank Holiday. At the time of writing, the cross trades around 216.40, retreating from an intraday high near 216.85.

The Yen attracts buyers after USD/JPY briefly moved above the psychologically important 160.00 mark, a level that has previously prompted Japanese authorities to intervene in the foreign exchange market. Finance Ministry data released on Friday showed that Japan spent a record ¥15.4 trillion, around $96.5 billion, supporting the Yen between July 30 and August 26, after USD/JPY surged to a 40-year high near 164.00.

Meanwhile, hawkish Bank of Japan (BoJ) expectations also lend some support to the Yen. Still, the broader outlook remains fragile as Japan’s expansionary fiscal policies, large government debt and relatively low interest rates continue to pose headwinds for the currency.

OCBC FX strategists note that “a September move would break from the BoJ's pattern in the current tightening cycle, where rate increases have typically come about every six months,” with the last hike delivered in June. They caution that “even so, it will be difficult for the BoJ to out-hawk market expectations,” given how aggressively the rates curve is already positioned. Japan's rates market is “already pricing a roughly 85% chance of a September hike, alongside a faster pace of tightening thereafter,” with current pricing implying “the policy rate rising from 1.00% to 1.75% by July 2027.”

Against that backdrop, OCBC argues that “given the constraints on how quickly and how far the BoJ can raise rates, additional measures may still be needed to counter more persistent JPY depreciation pressures.” In their view, “one option could be policies aimed at encouraging the repatriation of overseas assets,” as “future JPY gains may require policy support that goes beyond the pace and extent of rate increases.”

On the UK side, the Bank of England (BoE) is widely expected to leave interest rates unchanged in the coming months, even as inflation stays above its 2% target. At its latest meeting, most policymakers judged that the tightening in financial conditions since the Middle East war began was providing sufficient protection against inflation risks stemming from higher energy prices.

Looking ahead, the economic calendar is relatively light on both sides this week. Data released earlier on Monday showed that Japanese Retail Trade rose 4% YoY in July, above the 3% forecast, while Large Retailer Sales increased 1.4%, rebounding from a 1% decline previously.