Asian Currency

Next Bank of Japan intervention may be to sell yen :Mike Dolan By Reuters


By Mike Dolan

LONDON (Reuters) -If Japan’s government is thinking ahead, it may be planning to rein in its errant yen rather than propping it up.

A two year cat-and-mouse game between speculators and Japan’s authorities – involving mounting bets against the yen on yawning interest rate gaps with other G7 economies – ended this month with the cat licking its lips, even while suffering some indigestion.

The yen’s slide to near four-decade lows, which played no small part in the exit of another Japanese prime minister this week, drew months of government warnings and then eventually periodic bouts of yen-buying intervention by the Bank of Japan.

But when the BOJ finally lifted interest rates again on July 31 and warned of more to come, it popped the “carry-trade” bubble and the currency turned violently – sparking an eye-watering but brief spasm of stock market volatility in Tokyo and around the world.

Job done?

There’s a body of opinion that thinks it may end up working a little too well.

Harking back to long stretches of recent history in which the BOJ was either buying or selling yen every two to three years to corral its moves, there’s every chance the currency quickly overshoots again on the strong side.

No less than Nomura, Japan’s biggest brokerage, raised the very prospect before last week’s blowup.

“We may need to start considering potential FX interventions by the MOF (Ministry of Finance) to limit the yen strength rather than weakness,” its macro research team told clients on Aug. 2, adding that wasn’t yet its “base case.”

“Intervention history tells us that after the yen buying interventions, there followed yen selling interventions to limit the yen strengthening too much.”

TENDENCY TO OVERSHOOT

And until about 10 years ago at least, that was indeed the routine pendulum swing.

The most celebrated currency intervention episodes were the collective G5 and G7 forays in 1985 and 1987 – with the former Plaza Accord to weaken the dollar followed two years later by the Louvre Accord to shore up the greenback. Dollar/yen was at the heart of those swings.

But yen-specific interventions by Japanese authorities alternately saw official buying and selling of yen at extremes between 150 and 75 per dollar every few years for the two decades after the property bust of the 1990s.

The extremes of Japan’s low interest rates since that crash and the resulting inflation and deflation of speculative carry trades paved the way for the volatility and overshoots in both directions during that period.

The routine “ebb” was yen weakness and the “flow” was exaggerated snapbacks in times of stress or volatility as carry trades were popped, or Japanese investors fled repatriated overseas investments. And that was a key reason the yen behaved as a “haven” during any market shocks of that period – something that compounded the moves into the mix.

But after the 2007-2008 Great Financial Crisis a decade ensued where interest rates in virtually all the Group of Seven members gravitated close to Japan’s zero level – smothering carry-trade temptations and allowing a relatively stable yen exchange rate to effectively sideline the BOJ’s hyperactive currency desk.

In fact, there was no confirmed intervention between the extraordinary earthquake and tsunami shock of 2011 and 2022 – when the post-pandemic, post-Ukraine invasion interest rate spikes elsewhere isolated Japan back at the zero level once again – refiring the carry trade into the bargain.

The wild swings of the past few weeks are just a reminder of the currency’s inherent tendency to overshoot.

NORMALIZED YIELD GAPS?

Spin ahead, and it’s not hard to see where a burst of yen strength might come from here. As U.S. and other G7 policy rates finally tumble and the carry trade clears out, Japan may feel emboldened to “normalize” further – increasingly confident its decades of post-1990 deflation are over.

Even though markets now think Tokyo may be even more wary of raising interest rates again for fear of upending the stock market as happened earlier this month, the latest GDP update may be encouraging, a new prime minister will be in town soon and the U.S. Federal Reserve will likely start cutting rates next month anyhow.

Two-year benchmark Japanese bond yields have recoiled back below 30 basis points from 15-year highs close to 50 bps at the start of the month. Given that alone, any suggestion of higher rates will warrant a significant repricing.

But the yield gap with the rest of the G7 already has been waning.

Two-year spreads versus U.S. Treasuries have fallen by 1.1 percentage points in just over three months, with the dollar/yen only reacting with a three-month lag to that turnaround. It would take another 1.7 point squeeze of that spread to get back to a 10-year average – and that could happen relatively quickly if it’s coming from both sides.

Fear of Donald Trump’s broad trade tariff pledges if the Republican former U.S. president wins the Nov. 5 election could be another reason for Japan to hold fire for a bit. But Trump is no longer the favorite in either opinion polls or betting markets.

While another move to hike rates could be partly self-defeating if yen strength hits exporters and the wider Japanese economy, the flipside of currency strength is lower import prices that allow more significant real wage rises to deliver the holy grail of domestic consumption growth.

But if yen strength goes too far too fast – then there’s always intervention to calm it down.

The opinions expressed here are those of the author, a columnist for Reuters.

(by Mike Dolan X: @reutersMikeD; Editing by Paul Simao)





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