U.S. equity futures rallied sharply on Monday, after President Donald Trump called off planned military strikes against Iran. The de-escalation sent crude oil prices tumbling by roughly 6% to 7%. Simultaneously, the U.S. and Japan executed a joint market intervention to prop up the weakening yen.
Financial markets kicked off August with significant movement as geopolitical tensions eased in the Middle East and central authorities intervened across currency exchanges. Futures tied to the Dow Jones Industrial Average rallied 686 points, or nearly 1.3%, on the first trading day of the month. S&P 500 futures advanced 0.6%, and Nasdaq-100 futures ticked up 0.3% following President Donald Trump’s announcement that a planned attack on Iran had been canceled.
The announcement reversed late-week market jitters. U.S. media reports had previously indicated that the administration was preparing for a fresh wave of military strikes as diplomatic efforts stalled and energy costs spiked. Instead, talks between the U.S. and Iran are scheduled to resume, prompting an immediate pullback in commodity and debt markets.
Crude Oil Prices Tumble and Treasury Yields Slide Following Iran De-Escalation
Energy markets reacted swiftly to the averted conflict. Brent oil lost about 6% to trade at $82.95 per barrel, while West Texas Intermediate futures shed nearly 7% to $78.93 per barrel.
The sharp drop in oil eased broader economic anxiety, pulling down Treasury yields as inflation fears receded. The benchmark 10-year Treasury yield slid 7 basis points to about 4.67%.
Despite the positive market open, analysts urged caution. Vital Knowledge founder Adam Crisafulli noted that market participants remain wary after enduring prior false dawns in the region.
Adam Crisafulli, Vital Knowledge founder
The relief rally comes as investors look ahead to a heavy slate of U.S. labor market data. Markets are bracing for Friday’s nonfarm payrolls and unemployment figures. FactSet consensus estimates project that the U.S. economy added 87,500 jobs in July, up from 57,000 the previous month, while the unemployment rate is expected to edge up from 4.2% to 4.3%.
U.S. and Japan Stage Rare Joint Intervention to Rescue the Weakening Yen
The U.S. dollar weakened sharply against the Japanese yen after officials from both nations confirmed a coordinated market intervention.
Prior to the operation, the dollar traded above 163 yen, touching 40-year highs. Following suspected regulatory checks late last week, the exchange rate dipped below 160 yen. Early Monday, after the official announcement, the dollar dropped about 1% to 156.34 yen.
Prolonged yen weakness has severely strained Tokyo’s import-dependent economy, driving up domestic inflation. Previous unilateral efforts by Japan earlier in the year failed to shift the exchange rate decisively.
Finance Ministry and U.S. Treasury Coordinate Action in Tokyo
Japanese Finance Minister Satsuki Katayama issued a formal statement confirming that the Finance Ministry purchased yen in coordination with the U.S. Treasury Department. According to the ministry, the operation successfully countered excessive volatility and disorderly movements in the Japanese yen in recent months and officials warned they would not hesitate to act again if needed.
Such overt bilateral cooperation between Washington and Tokyo remains exceptionally rare. Neil Newman, managing director and head of strategy at Astris Advisory Japan, noted that the last intervention of this scale followed the devastating earthquake and tsunami in northeastern Japan in 2011.
President Trump defended the joint action when questioned about Washington’s motives, pointing to mutual financial advantages.
“We have a good relationship with Japan. We’re very strong — very, very strong financially — and they are, you know, they have a weakening yen, and they wanted a little bit of help, and we’re always there for Japan. Japan’s been very good to us, with the exception, of course, of Pearl Harbor.”
Donald Trump, U.S. President
Trump described the intervention as a signal of friendship.
adding that Washington secured a financial benefit
from the maneuver and that It’s also good for the world economy.
Mixed Trading Across Global Stock Exchanges on Monday
European equities climbed during morning trade alongside U.S. momentum. The Stoxx 600 rose 0.3%, buoyed by a 2.3% advance among European carmakers. Germany’s DAX led regional gains with a 1.3% increase, and the French CAC 40 added nearly 1.1%, while the U.K.’s FTSE 100 dipped 0.1%.
In the Asia-Pacific region, closing results were mixed. South Korea’s Kospi dropped over 5%, pulling back from record-setting gains registered late last week. Japan’s Nikkei 225 fell 0.94%, and mainland China’s CSI 300 slipped 0.98%, whereas Australia’s S&P/ASX 200 managed a 0.47% gain.
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