Kiwi Dollar Slips 1.2% as Iran Tensions Spur Safe-Haven US Dollar Demand

The New Zealand dollar fell 1.2% against its US counterpart Tuesday as escalating tensions between the US and Iran triggered a broad flight to safety, bolstering demand for the greenback as a haven asset.

"This is a textbook geopolitical risk-off move, where capital flows out of growth-sensitive assets and into traditional havens," said John Miller, a senior currency strategist at Global Forex Insights, in a note to clients. "The dollar is the primary beneficiary, alongside gold and US Treasuries, while commodity currencies like the Kiwi bear the brunt of the pressure."

The move was part of a wider market reaction that saw volatility spike during the first quarter of 2026. The Iran conflict contributed to a surge in oil prices toward $120 a barrel, a selloff in equities that saw major indexes correct by at least 10%, and a jump in bond yields as inflation concerns resurfaced, according to a Q1 market summary from Leonard Rickey Investment Advisors. The risk-off environment drove a rotation out of growth stocks and into Value, small-caps, and alternative assets, which all posted positive returns.

Heightened geopolitical tensions could lead to sustained risk-off behavior, depressing equities and commodity-linked currencies while boosting safe-haven assets. The situation increases volatility across all asset classes, with market direction hinging on de-escalation. Key variables to monitor include interest rate trends, inflation expectations, and global trade developments.

Cross-Asset Repercussions

The market turmoil upended recent trends. Before the conflict, international stocks had been outperforming their US counterparts for over a year, but that leadership reversed abruptly. Equity markets in regions most dependent on energy imports, such as Europe, underperformed significantly. For example, prices for liquefied natural gas (LNG) rose sharply in Europe while remaining mostly flat in the US.

Within US markets, the reaction was nuanced. While the S&P 500 experienced a correction, it rebounded sharply to hit a new all-time high on April 15th, fueled by hopes of de-escalation. According to analysis from Leonard Rickey, this resilience was supported by strong underlying fundamentals, including healthy corporate balance sheets and ongoing capital investment in AI-related infrastructure, projected to be over $600 billion or 2% of GDP. Despite the geopolitical headwinds, S&P 500 first-quarter earnings growth was projected at 13.0%, according to FactSet data from March 27.

Energy Landscape's Historical Shift

While the oil price spike recalled the stagflationary shocks of the 1970s, market analysts note the global energy landscape has fundamentally changed, making the US less vulnerable. In the 1970s, OPEC produced over twice as much oil as major developed market producers. Today, the US has become a net exporter of crude oil, with domestic output helping lift OECD production to nearly match OPEC’s.

This structural shift, combined with lower energy intensity in the US economy—where consumers spend around 3% of their income on energy versus nearly 8% in the 1970s—mitigates the risk of a severe, prolonged economic downturn. The last time a geopolitical event caused such a spike in oil prices, the global economy was far more dependent on Middle Eastern supply, leading to a multi-year period of economic underperformance.

This article is for informational purposes only and does not constitute investment advice.