Business Report Markets

The financial implications of US-Iran peace negotiations

MARKETS

Bianca Botes|Published
US Secretary of State Marco Rubio passes a US flag to a Marine during a flag raising ceremony at the US embassy amid his visit to the Middle East to discuss the interim deal between the US and Iran with Arab Gulf allies, in Kuwait City. Explore how the potential for peace in the Middle East is transforming global financial markets, despite ongoing inflation pressures and central bank policies.

US Secretary of State Marco Rubio passes a US flag to a Marine during a flag raising ceremony at the US embassy amid his visit to the Middle East to discuss the interim deal between the US and Iran with Arab Gulf allies, in Kuwait City. Explore how the potential for peace in the Middle East is transforming global financial markets, despite ongoing inflation pressures and central bank policies.

Image: Eric Lee/Pool/AFP

The global financial landscape is navigating a significant and volatile paradox.

For months, markets have operated within a defensive framework shaped by energy shocks and a hawkish shift in monetary policy.

Last week, however, the main driver of global asset prices was not the threat of escalating conflict, but the growing prospect of peace.

As formal United States (US)-Iran negotiations in Switzerland showed encouraging progress, the geopolitical risk premium that has supported commodity markets throughout the year is rapidly unwinding.

For central banks, however, this de-escalation does not provide an immediate opportunity to ease policy.

The effects of a supply shock take time to work through corporate earnings and consumer prices. While headline markets may react quickly to breaking news, underlying inflation pressures move more slowly, forcing policymakers to keep their defensive guardrails firmly in place.

The illusin of relief 

The key challenge facing markets this week is that falling commodity prices are colliding with stubbornly strong domestic data.

In the US, newly confirmed Federal Reserve (Fed) Chair, Kevin Warsh, continues to oversee an uncomfortably tight environment.

The latest May Personal Consumption Expenditures (PCE) data reinforced this challenge, with headline inflation at 4.1% year-on-year and core inflation remaining elevated at 3.4%.

Even though Brent crude has fallen to multi-month lows, the strength of the US economy remains evident.

Real-time Purchasing Managers Index (PMI) data recently rose to a multi-year high of 55.7, highlighting a US manufacturing sector that continues to perform strongly.

As a result, bond markets have largely priced out near-term policy relief, maintaining expectations that the Fed will keep rates higher for longer through the second half of the year.

The South Africa outlook 

For SA, this global backdrop has created a particularly challenging domestic environment. Just as global energy pressures began to ease, local inflation data served as a reminder that domestic price pressures remain elevated.

Statistics SA reported on Thursday that May producer inflation accelerated sharply to 7.8% year-on-year, up from 4.8% in April and well above market expectations.

This significant rise in the Producer Price Index (PPI) supports the South African Reserve Bank’s (SARB’s) widely debated decision to raise the repo rate to 7% late last month.

SARB Governor, Lesetja Kganyago’s proactive approach was designed specifically to prevent these pipeline inflation pressures from becoming more deeply entrenched.

While the sharp decline in international oil prices provides an important cushion for the local economy, elevated producer inflation is likely to keep the SARB cautious and maintain its hawkish stance to prevent higher manufacturing costs from filtering through to consumer prices.

Markets in a nutshell 

The past week's key themes:

  • Middle East peace progress triggers a major commodities sell-off
  • US Dollar Index rises to a 13-month high near 101.8
  • SA producer inflation surprises to the upside at 7.8%
  • Sticky US PCE data reinforces a restrictive global rate outlook
  • United Kingdom (UK) Prime Minister, Keir Starmer, resigns

Bonds

US Treasury yields held firm this week, with the 10-year around 4.49% and the two-year pushing above 4.20% as markets repriced the Fed path more hawkishly.

Although the Fed held its target range at 3.50% to 3.75% at its June meeting, the outcome was read as anything but dovish.

The 2026 inflation projections were revised sharply higher, to 3.6% for headline and 3.3% for core PCE and the dot plot now points to roughly one more hike, with a meaningful share of officials still expecting a 2026 increase. Fed Chair Warsh kept the emphasis firmly on price stability, which leaves room for the central bank to keep interest rates elevated.

SA bonds firmed, with the 10-year yield easing toward 8.45% to 8.50%, supported by a resilient rand, softer oil and May inflation at a benign 4.5%, even after the SARB raised the repo rate to 7% in May.

In Japan, 10-year Japanese Government Bond yields eased to about 2.62% after the Bank of Japan raised its policy rate to 1%, its highest level since 1995, with the board leaning toward further hikes later in 2026.

Equities

Wall Street experienced a volatile and divided trading week, with the S&P 500 and Nasdaq seeing sharp sector rotation between artificial intelligence (AI) optimism and megacap pressure.

Strong gains in semiconductor stocks, led by Micron's blowout earnings guidance, helped reignite the AI trade, while Alphabet's worst single day in 13 months and a hotter than expected inflation print weighed on broader tech sentiment.

The S&P 500 ended Thursday down 1.3% for the week and the Nasdaq off 2.9% for the week, while the Dow held up better at plus 0.6% as money rotated into more defensive and industrial names.

European equity markets traded resiliently, with the STOXX 600 closing at a fresh record high of 640.21, up about 0.2% week to date, while the EURO STOXX 50 slipped slightly to 6,267.53.

Early progress in US-Iran peace talks lifted sentiment, though that optimism faded as the week progressed.

The FTSE 100 closed at 10,529.89, up 0.9% week to date and its highest level since April 20, largely shrugging off the tech-driven volatility hitting other markets thanks to its heavy weighting in banks, healthcare and commodities.

Prime Minister Starmer's resignation added a layer of domestic political uncertainty, with stocks exposed to the UK economy bearing the brunt of concerns around likely successor, Andy Burnham's, fiscal stance.

The JSE Top 40 struggled to establish a clear direction, closing at 102,624, down roughly 1.8% for the week, as global risk aversion and weaker commodity prices pressured resource and mining shares, led by Gold Fields and Impala Platinum.

Financial names found some support, with FirstRand indicating that its revenues from interest charged on lending has exceeded previous forecasts.

Commodities

Brent crude recorded its weakest monthly performance since 2022, falling sharply to around $74/barrel.

The decline reflects the rapid unwinding of geopolitical risk premiums as oil tankers resume movement through the Strait of Hormuz amid advancing peace talks.

However, some buying from manufacturers looking to secure supply has helped limit further downside.

Gold prices also came under pressure, breaking below their recent trading range to move toward $4,000/ounce.

Higher US yields, a stronger dollar and reduced demand for safe-haven assets have weakened the metal’s near-term support.

Currencies

The US Dollar Index is holding firm, near 101, close to its strongest level since May 2025, as a hawkish Fed continues to anchor sentiment. Although the Fed left rates on hold, upgraded inflation projections and the prospect of a further hike later in 2026 is keeping US rate support intact.

A sharp drop in oil prices, after US-Iran tensions eased and supply risk receded, has softened inflation worries and trimmed safe-haven demand, yet the hawkish policy signal remains the dominant driver, leaving the dollar in demand.

The euro has come under renewed pressure, drifting from around $1.14/€ to a week’s low near $1.1325/€ before steadying close to $1.136/€. The ECB’s recent 25-basis-point hike to a 2.25% deposit rate has largely been digested and with the bank expected to be nearer the end of its tightening cycle, the focus has shifted back to the wide US rate advantage. Sluggish eurozone growth against a resilient US backdrop is keeping the single currency on the back foot.

Sterling slipped from around $1.323/£ toward a midweek-low near $1.314/£, ending close to $1.317/£.

While the BoE’s seven-to-two hold at 3.75% was hawkish, falling gilt yields, softer oil and a firmer dollar are weighing on the currency, with energy-related inflation risks still in focus.

The rand has weakened from around R16.43/$ to near R16.60/$, pressured by lower gold and platinum prices and a stronger dollar, even as falling oil prices has offered some relief ahead of the SARB’s July meeting.

Bianca Botes, Managing Director at Citadel Global

Bianca Botes, Managing Director at Citadel Global

Bianca Botes, Managing Director at Citadel Global

Image: Supplied.

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