Vanguard has projected that the Japanese Yen is at risk of falling to 170 per dollar if the Bank of Japan's (BOJ) potential policy adjustments in July fail to increase the country's bond yields. This level would mark a significant new low for the currency, which recently surpassed 161 per dollar, a level not seen since 1986. The Yen has already depreciated by 13% this year, increasing pressure on Japan to intervene in the market to support its value and for the BOJ to reduce its extensive government bond purchases that maintain loose monetary conditions, according to Bloomberg.

Separately, Suntory Holdings Ltd. CEO Takeshi Niinami also suggested in September 2023 that the yen could reach 170 per dollar, a level last observed in 1986, if the central bank maintains its low interest rate policy. He did not provide a specific timeframe for this forecast, noting that higher interest rates might be several years away to manage economic risks from sudden hikes. Niinami also recommended that Japanese companies explore more overseas investment opportunities.

However, other analyses suggest different intervention thresholds. Yen options trading implies that the currency could weaken to 165 per dollar before Japanese officials would likely intervene, according to The Japan Times. This level is only about a 1.6% drop from its current position, which is already near a four-decade low. In late April, the Japanese government spent nearly $74 billion to prop up the yen, an intervention that saw a short-lived rebound. Japanese officials have since issued verbal warnings, indicating their readiness to act again if necessary. Despite this, some believe the yen is undervalued; former vice finance minister for international affairs, Tatsuo Yamasaki, stated that the yen should be up to 20% stronger, around 130 per dollar, suggesting that current market movements are driven by expectations rather than fundamentals.

The prospect of currency intervention remains a key concern for investors as the yen continues its decline. The yen saw a slight strengthening against the dollar on Thursday, amidst speculation that future interventions by Japan might occur without prior warnings from officials. This indicates a heightened state of alert among traders regarding potential government action to stabilize the currency.