War Premium Lifts Oil and Gold as Japan's Yen Defense Drains a Record $79.6 Billion

On Friday, September 4, 2026, oil and gold rallied together after the United States and Iran struck tankers in the Strait of Hormuz, the narrow waterway between Iran and Oman through which much of the world's seaborne oil passes. Gold held near $4,400 an ounce as investors sought safety from the widening conflict, even as Bitcoin fell — a sign that in this bout of risk aversion, money went to bullion rather than crypto. Oil extended its gains for a second straight week as traders priced in a bigger war-risk premium, the extra cost buyers pay when supply from a conflict zone might be disrupted. European stocks slid as the same oil move made the continent's energy import bill look more expensive, while equity markets in Asia found reasons to rally regardless. The second story that moved money was Japan's defense of the yen. Tokyo's foreign-exchange reserves posted their largest-ever monthly drop, down $79.6 billion in August, after the government carried out record intervention — selling dollar reserves to buy yen and support its value. That scale of spending showed how hard the finance ministry worked to halt the currency's slide, and a reflationist aide to Prime Minister Takaichi added to the pressure by projecting a Bank of Japan interest-rate hike in September, a move that would raise Japanese rates and narrow the gap with US rates that has been pulling money out of yen. Tokyo's Nikkei 225 pressed up against its 200-day moving average, a technical marker chartists watch because a break above it often triggers further buying, while a rally in Asian chip stocks, including SK Hynix testing resistance near ₩1,750,000, spread the region's gains beyond Japan. In the United States, a stronger-than-expected jobs report shifted the interest-rate conversation from cuts to hikes. UBS said it now expects two Federal Reserve rate increases in 2026, a call that would have looked unlikely when the debate had centered on how many cuts the Fed might deliver. Yet the dollar gained only marginally on the news, an odd disconnect, since higher rate expectations usually pull money into a currency. Traders in Asia weighed the same Fed odds against enthusiasm for AI-linked stocks — Nvidia's chief executive said