Reserves fall 6.18% in August as Tokyo’s dollar-selling interventions and rising global bond yields weigh on holdings

Japan’s foreign-exchange reserves recorded their sharpest monthly decline since comparable records began in 2000, falling 6.18% in August as Tokyo’s efforts to support the yen coincided with a selloff in global government bonds.

Reserves stood at $1.207 trillion at the end of August, down from $1.287 trillion a month earlier, according to Finance Ministry data. The decline marked the fourth consecutive monthly drop and exceeded the previous record of 5.58% set in May.

The Finance Ministry did not specify the reasons for the latest decline. Kyodo News, citing an unidentified ministry official, attributed the fall to foreign-exchange intervention aimed at supporting the yen as well as a decline in the market value of government bonds following a sharp rise in yields.

Masahiko Loo, senior fixed-income strategist at State Street Investment Management, said the decline was primarily linked to Tokyo’s recent efforts to sell dollars and buy yen.

“The decline is primarily the result of Japan’s recent dollar-selling, yen-buying FX interventions,” Loo told CNBC.

The drop in reserves provides a measure of the scale of Japan’s recent currency-defense campaign. Tokyo has intervened repeatedly in foreign-exchange markets as the yen came under intense pressure from wide interest-rate differentials and expectations that U.S. rates would remain substantially above Japanese borrowing costs.

Japan spent about 11.73 trillion yen ($75.26 billion) supporting the currency in April and May before conducting a substantially larger intervention of 15.4 trillion yen at the end of July. The July operation was supplemented by the United States selling euros to support the yen, marking the first coordinated intervention between Washington and Tokyo to support Japan’s currency since 1998.

The combined intervention of about 27.1 trillion yen so far this year is the largest annual amount recorded by Japan, exceeding the previous record of 20.4 trillion yen in 2003.

The intervention has nevertheless left the yen well below its levels of a year ago. The currency fell to a 40-year low of 163.98 per dollar on July 23 before recovering, and was trading around 155.98 on Monday.

For investors, however, the decline in reserves does not necessarily signal financial instability.

“The decline reflects policy action rather than financial stress,” Loo said.

The latest decline largely reflects the government actively deploying foreign assets to influence the exchange rate rather than losing the ability to meet external obligations. At the same time, rising global bond yields are creating an additional valuation drag. Yields on government debt in the United States, Germany, Britain and other major economies have climbed to multiyear highs, reducing the market value of existing bonds held as reserve assets.

The combination creates a difficult environment for Japanese policymakers: defending the yen requires selling foreign-currency assets, while higher global yields can reduce the value of the assets that remain.

BOJ Rate Hike Bets Strengthen

The pressure on the yen is also strengthening the case for the Bank of Japan to raise interest rates.

Takuji Aida, an economic adviser to Prime Minister Sanae Takaichi and chief Japan economist at Credit Agricole, said the BOJ is likely to increase its policy rate in September and could continue raising rates roughly once a quarter through January.

Aida, a reflationist who has traditionally opposed rapid BOJ tightening, said he had brought forward his forecast for the next rate increase from January 2027 because September offers a narrow opportunity to act before an extraordinary parliamentary session begins in early October.

Parliament is expected to debate, among other measures, legislation related to Takaichi’s proposal to suspend an 8% levy on food items for two years.

After a September increase, Aida expects another hike by January, followed by a slower pace of roughly one increase every six months.

“The premature, accelerated pace of rate hikes would weigh on the economy,” Aida said.

Markets have already moved strongly toward expecting tighter policy. Investors are now pricing in a near-certain 25-basis-point increase in the BOJ’s policy rate to 1.25% at its September 17-18 meeting.

The prospect of a hike has strengthened partly because of continuing pressure from Washington. U.S. Treasury Secretary Scott Bessent last week voiced strong support for “decisive” monetary-policy action by the BOJ to address yen weakness.

Japanese officials have pushed back against the perception that Washington can dictate monetary policy. Finance Minister Satsuki Katayama has repeatedly said interest-rate decisions are the responsibility of the central bank.

BOJ Governor Kazuo Ueda, however, said last week that policymakers would consider a rate increase, including at the September meeting, with particular attention to whether inflationary risks were intensifying.

Yen Weakness Puts BOJ In A Difficult Position

Analysts see the prospect of higher rates as an indication that currency intervention alone may not provide a durable solution to the yen’s weakness. This is because selling dollars and buying yen can temporarily alter supply and demand in foreign-exchange markets, but the currency’s longer-term direction is heavily influenced by interest-rate differentials and expectations for future monetary policy.

That leaves the BOJ facing a difficult balancing act.

Higher rates could make yen-denominated assets more attractive and reduce the incentive for investors to hold dollars against the yen. But faster monetary tightening would also increase borrowing costs for Japanese households and companies and could weaken domestic demand at a time when policymakers remain concerned about economic growth.

Aida’s comments are therefore notable not simply because he expects a September hike, but because they suggest that support for further normalization may be broadening even within an administration that has generally favored accommodative policy.

The government has also been under pressure to prevent excessive yen weakness from feeding into imported inflation, particularly through higher energy and food costs.

For markets, the raging concern hangs on the ability of the BOJ to narrow the interest-rate gap with the United States without undermining Japan’s economic recovery. The record decline in foreign reserves shows that Tokyo has been willing to use substantial resources to stabilize the currency. But with global bond yields rising and the yen still trading near 156 per dollar, intervention alone may have diminishing effectiveness.

A sustained recovery in the yen would likely require a combination of continued official intervention, a credible path toward higher Japanese interest rates and, potentially, a shift in expectations for U.S. monetary policy.

China is preparing to inject up to 360 billion yuan ($53.6 billion) into major state-owned insurers and banks, a move analysts say could ease solvency pressures on the insurance sector and give Beijing greater scope to channel long-term institutional capital into the stock market.

Five state-owned insurers and three banks announced plans on Sunday to raise a combined total of up to 360 billion yuan through capital injections from the Ministry of Finance and other shareholders.

The Finance Ministry will issue 300 billion yuan of special government bonds to finance the recapitalization, state-run Xinhua News Agency reported. The move marks the first time Beijing has used special bonds to recapitalize insurers, extending a funding mechanism that had previously been used to strengthen state-owned banks.

For the insurance industry, the capital injection could remove one of the key constraints preventing large insurers from increasing their exposure to equities at a time when Beijing is seeking to make institutional investors a more important source of stability for China’s stock market.

“The state-led injection will make it easier for insurers to buy equities and meet solvency requirements,” said Gary Ng, senior economist for Asia-Pacific at Natixis.

Ng noted that Beijing has encouraged insurers to invest 30% of new premiums in stocks since the beginning of last year. Yet equities accounted for only about 21% of assets at the end of 2025 among five major listed mainland insurers, he said.

The gap highlights the challenge facing policymakers. Insurers can provide a potentially powerful source of patient capital because their liabilities are long-term, but regulatory capital requirements limit how aggressively they can allocate funds to higher-risk assets such as equities.

The recapitalization could give insurers additional room to increase those allocations.

Analysts at Zhongtai Securities said the fresh capital should provide immediate relief to insurers’ solvency ratios, particularly core solvency ratios that have come under pressure from falling government bond yields.

Insurers value their liabilities and assets according to regulatory and accounting frameworks that can make their capital positions sensitive to changes in bond yields. A decline in government bond yields can increase the value of certain liabilities and place pressure on solvency ratios.

The new capital would strengthen insurers’ balance sheets and give them more room to absorb those pressures.

Over the medium term, analysts said, the recapitalization could remove a constraint on insurers’ ability to increase long-term equity investments. Over a longer horizon, it would strengthen the capital base of the country’s largest state-owned insurance groups.

That makes the policy significant beyond the immediate financial health of individual insurers. Beijing has been trying to encourage more stable, long-term institutional money into China’s equity market, where retail investors remain influential, and market sentiment can produce substantial volatility.

Insurance companies are particularly attractive to policymakers because they manage long-duration liabilities and can, in principle, hold assets for considerably longer periods than short-term investors.

“The recapitalization could be seen as a roundabout way of aiding the equity market,” said Christopher Beddor, deputy China research director at Gavekal Dragonomics.

He noted that equities remain a high-risk asset class, meaning insurers would require sufficiently strong capital buffers if they are expected to increase their exposure significantly.

$70 Billion for State Insurers

The Finance Ministry will provide a combined 70 billion yuan in capital to five state-owned insurance companies.

China Life Insurance Group will receive 35 billion yuan, while China Taiping Insurance Group will receive 7 billion yuan. PICC Group plans to raise as much as 15 billion yuan through a private placement of A-shares to the Finance Ministry. The remaining funds will go to other state insurance entities, including China Export & Credit Insurance Corp.

Cheng Tan, founder of Beijing-based consultancy GMF Research, estimated that the 60 billion yuan allocated to the four commercial insurance groups among the five recipients, excluding China Export & Credit Insurance, could support roughly 100 billion yuan of additional equity exposure.

That potential leverage is central to Beijing’s strategy. The government does not necessarily need to purchase stocks directly to increase state influence in the equity market. Strengthening the capital base of major insurers can allow those institutions to increase their own investment in equities while still meeting regulatory solvency requirements.

The approach effectively uses public capital to expand the capacity of large institutional investors.

The insurer recapitalization also came sooner than many investors had anticipated. The Finance Ministry said in March that it planned to issue special bonds to recapitalize banks, leading some market participants to expect similar support for insurance companies only in 2027.

The earlier action indicates that policymakers see a sufficiently strong case for strengthening insurers now, rather than waiting for balance-sheet pressures to build further.

The policy also mirrors a broader restructuring campaign in China’s financial sector. Beijing has been encouraging large state-owned banks to absorb smaller and potentially weaker institutions as regulators seek to consolidate the banking system and contain financial risks.

Beddor said the insurer recapitalization follows a similar logic, strengthening major institutions so they can play a larger role in supporting weaker parts of the financial system. That could eventually give large state insurers a role in managing or absorbing smaller, higher-risk insurance companies, in addition to increasing their capacity to invest in financial markets.

Markets Question the Dilution

The immediate market reaction was mixed.

The CSI 300 blue-chip index gained 0.6% on Monday, while the insurance sector fell 2.5% and the banking sector declined 1.5%. The divergence suggests investors were weighing the potential benefits of stronger balance sheets against the possibility of dilution for existing shareholders.

For listed insurers and banks, issuing new shares to raise capital can increase the number of shares outstanding and dilute existing investors, even if the additional capital strengthens the institution over time.

That helps explain why the broader market responded positively while the sectors directly affected by the capital raising came under pressure.

But the scale of the insurance recapitalization was also below some earlier market expectations. Citi analysts said investors had previously anticipated a package of about 200 billion yuan specifically for the insurance sector. The eventual package was significantly smaller.

The analysts said the reduced size suggested Chinese insurers are in a healthier capital position than some investors had assumed and that policymakers therefore had less need for an aggressive replenishment of capital.

“This downsized package underscores the healthier capital positions of Chinese insurers, indicating an overall lower urgency for aggressive capital replenishment,” the Citi analysts said.

That interpretation is important because it suggests the policy is not necessarily an emergency rescue of the insurance industry.

Instead, Beijing appears to be pursuing two objectives simultaneously: reinforcing the resilience of major financial institutions and creating additional balance-sheet capacity for them to deploy capital into longer-term investments.

A New Channel for Supporting China’s Equity Market

The broader significance lies in how Beijing is attempting to influence the composition of capital flowing into Chinese equities. Direct government intervention in stock markets can stabilize prices temporarily but can also create questions about market discipline and the government’s role as an investor.

Using state-backed financial institutions provides a different mechanism. By strengthening insurers’ capital positions, policymakers can encourage them to allocate more of their existing investment pools toward equities without requiring the government to buy shares directly.

The strategy also fits Beijing’s longer-term effort to develop a larger institutional-investor base and reduce the market’s dependence on short-term trading.

Analysts say the effectiveness of the approach will depend on how much of the new capital ultimately translates into additional equity investment. This is because stronger solvency ratios do not automatically mean insurers will buy stocks aggressively, particularly if regulators continue to impose risk-based capital requirements or if insurers remain cautious about market valuations.

Still, the direction of policy is clear.

Beijing is strengthening the balance sheets of institutions that manage large pools of long-term savings while simultaneously encouraging those institutions to become more active participants in China’s equity market.