08/09/2026
Global financial markets are already under strain from bond sell‑offs and sharp currency swings. Over the coming months, mounting rate‑hike prospects, deepening worries over fiscal deficits and ongoing wars in the Middle East will expose markets to heightened volatility risks.
Northern Hemisphere’s traditional summer lull draws to a close as US investors return from the Labor Day holiday on Tuesday, bringing a host of challenges to the forefront. Despite widespread media reports of official intervention to prop up the yen and cap US Treasury yields, last month turned out to be one of the quietest on record. Euro‑currency volatility hit its lowest level since 2012, while US Treasuries suffered their worst August drawdown since the 2008 financial crisis.
Bond and currency investors face a packed calendar, including potential rate hikes from the Federal Reserve, alongside further tightening moves by the European Central Bank and Bank of Japan. Shifts may also unfold in European politics and spending priorities, while US President Donald Trump faces a critical test in November’s mid‑term elections. Brazil will also hold its presidential election.
Key Macro Events Ahead of Year‑End
Central Banks
The European Central Bank may walk into an expectations trap at its Thursday policy meeting. Investors have priced in a 25‑basis‑point rate increase and largely factored in one more hike before year‑end, assigning around a 25% probability to an October rise. Yet updated growth and inflation projections may make policymakers cautious about signalling additional tightening that markets are anticipating.
The following week, yen‑funded carry trades will face their biggest test since the violent market turbulence two years ago, as the Federal Reserve and Bank of Japan announce their policy decisions.
Fed Chair Kevin Walsh struck a more hawkish tone on inflation in late August, but markets remain sceptical whether the Fed will follow through with action. Swap traders see minimal odds of a rate increase on September 16, and chances could shrink further if US Consumer Price Index (CPI) data due Friday comes in below consensus.
Sources indicate the Bank of Japan will kick off its two‑day policy meeting the next day. Officials lean toward a 0.25‑percentage‑point rate rise this month to counter upside price risks, with potential for faster monetary tightening thereafter.
A dovish Federal Reserve paired with a hawkish Bank of Japan could push USD/JPY lower. Roughly $103 billion worth of short yen positions are vulnerable. The yen has rallied to its highest since February and is already showing signs of pullback. A sharper reversal in the yen could send volatility spilling over into equities, bonds and emerging markets, turning Japan into a potential source of global market stress.
Fiscal Headwinds
Britain’s deteriorating fiscal outlook poses growing risks for sterling, with gilt yields surging just weeks ahead of the late‑October budget. Bloomberg Economics estimates higher borrowing costs and inflation have erased roughly £12 billion of the UK government’s £24 billion fiscal headroom. With British public debt near 95% of GDP, investors are looking for a credible debt‑control plan.
UK Prime Minister Andy Burnham has pledged to respect fiscal rules while boosting defence spending and expanding the state’s role in the economy. However, he has not explained how these commitments will be financed. Should the budget fail to deliver sufficient fiscal space, investors may call these plans into question. That could drive up risk premiums on UK assets and weigh on sterling.
France faces similar concerns ahead of two‑round presidential elections in April‑May next year. Failure to agree on a credible fiscal plan soon could amplify pressure on public finances, as deficits exceed 5% and debt‑servicing costs climb. Both far‑right and far‑left candidates are advocating higher spending. Some risks are already priced in: French‑German bond spreads are near levels last seen during the euro‑area debt crisis, and French equities together with bank credit metrics have underperformed.
Elections
Political campaigning is heating up across multiple jurisdictions as US politicians gear up for November’s mid‑term elections, whose outcomes will likely shape fiscal policy. Democrats’ odds of retaking Senate control have grown. A Democratic victory could trigger investigations and impeachment proceedings against Trump, and make confirmation of judicial and cabinet nominees far more difficult.
This may fuel volatility in US Treasuries and global bond markets. US public debt stands at $40 trillion, with borrowing costs close to multi‑decade highs.
In New Zealand, the Labour Party is well‑positioned to form a government following a tight general election. Labour has promised to restore the Reserve Bank of New Zealand’s dual mandate of price stability and employment if it wins the November 7 vote. The policy shift would raise questions over the central bank’s inflation‑fighting approach and add uncertainty to interest‑rate and bond markets.
One month out from polling day, Brazil’s presidential race is tightening. Left‑wing leader Luiz Inácio Lula da Silva’s lead is eroding amid slowing economic growth and corruption allegations against his son. Investors are increasingly anxious about the fiscal policies Lula would pursue if elected.
Corporate Borrowing
September is typically one of the busiest months for new‑debt issuance. After summer breaks, corporations rush to complete financing programmes ahead of earnings seasons.
US borrowing volumes hit an all‑time high in August. AI‑driven spending pushed bond issuance to record levels for the third consecutive month, competing with government‑bond supply for capital. In an informal Bloomberg survey, dealers forecast around $215 billion in US investment‑grade bond supply. That would surpass last September’s record, though some Wall Street projections point to as much as $250 billion.
Meanwhile, European markets rebounded unusually early from summer lethargy. Corporate borrowing picked up at a record pace in the second half of August, as companies moved to get ahead of the coming financing rush.
Geopolitics
Escalating US‑Iran tensions have pushed Brent crude back toward $100 a barrel, stoking global inflation fears. Given Europe’s and Japan’s heavy reliance on oil and gas imports, a deeper energy shock would also pressure the euro and yen.
After the Supreme Court struck down previous import‑tariff measures under the Trump administration, Trump has sought to revive his protectionist trade agenda, heightening US trade frictions.
Following collapsed trade talks on August 21, Trump imposed 50% tariffs on $20 billion worth of Canadian goods. Ottawa is set to impose retaliatory new tariffs on the US on September 8. The dispute threatens the Canadian dollar by fuelling inflation and dampening economic growth.
The low‑volatility summer conditions witnessed in August have come to an end. Into September and beyond, converging risks — diverging central‑bank policies, fiscal fragility across economies, political‑election uncertainty, massive corporate debt supply and geopolitical‑trade frictions — will lift global market volatility.
In the near term, investors will focus on Fed‑ECB‑BoJ policy decisions and US CPI prints. Medium‑term watchpoints include national election results, the UK budget release and developments in the Middle East. Risk appetite is set to weaken, with cross‑asset swings across equities, bonds, currencies and commodities becoming more frequent. Market participants are advised to manage position sizes prudently against potential bouts of extreme price action.
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