U.S.-Iran Peace Spurs 12% SoftBank Leap

SoftBank Group (9984.T-JP) surged more than 12% on Monday – topping Asia’s major tech peers – after Washington and Tehran signed a memorandum of understanding ending their military conflict and pledging a toll-free reopening of the Strait of Hormuz. ¹

For deal-focused investors, the geopolitical breakthrough removes the single largest oil-price and supply-chain overhang that had compressed risk-asset valuations across the Asia-Pacific technology complex since the conflict began.

Key Takeaways

SoftBank rose 12%-plus, best among major Asia tech names.
South Korea’s Kospi jumped 5.2%; Nikkei 225 hit a record intraday high.
Brent crude fell roughly 4.6% as Strait of Hormuz reopening loomed.

Market Reaction & Context

SoftBank’s Monday gain was the sharpest single-day move among the region’s headline technology stocks, outpacing Tokyo Electron (8035.T-JP), which added 9.19%, and Advantest (6857.T-JP), which gained 7.69%. ²

South Korean memory-chip giants also rallied hard: Samsung Electronics gained 4.65% and SK Hynix climbed 6.42% on the Kospi, which itself jumped 5.2% to close at 8,545.98. Taiwan Semiconductor Manufacturing Co. (TSM) rose 2.16%, while Foxconn added 2.5%. ²

Japan’s Nikkei 225 surged to a record intraday high, ending the session up 5% at 69,317.50 – a level that underscored the breadth of the risk-on rotation. ¹

Catalyst: What the Deal Actually Says

The U.S. and Iran signed the memorandum electronically on Sunday, with a formal ceremony scheduled for Friday, June 19, in Switzerland, according to a senior Trump administration official who spoke to CNBC. ³

Under the terms disclosed so far, Iran will receive no economic benefits until it takes verifiable action on its nuclear program, and the immediate reopening of the Strait of Hormuz does not guarantee normal shipping flows right away – though the official said a “significant increase” in vessel traffic through the waterway is expected within two weeks. ³

Vice President JD Vance reinforced the market’s read of the deal.

“Our expectation is that the strait is going to be opened in a toll-free way for the long term, and that’s the sort of thing that we’re going to figure out in these technical negotiations,” Vance told CNBC on Monday. ³

Valuation & Catalyst Read-Through for Investors

For SoftBank specifically, lower oil prices reduce operating costs across its portfolio companies – particularly in logistics, mobility and AI infrastructure – while a broader de-risking of the geopolitical environment tends to lift the discount applied to its Vision Fund net asset value. The stock had been one of the most rate- and macro-sensitive names in Asian tech.

Brent crude futures fell roughly 4.6% to around $83.35 per barrel on Monday, while U.S. West Texas Intermediate dropped approximately 4.8% to $80.80 – the sharpest single-day oil sell-off since the conflict began and a direct margin tailwind for energy-intensive portfolio companies. ³

The effect was not confined to Asia. In the U.S., the Nasdaq Composite surged 3.07% to 26,683.94, and the S&P 500 advanced 1.65% to 7,554.29, with 39 S&P 500 components hitting new 52-week highs on the session. ³

Broader Sector Winners and Losers

The peace-deal catalyst produced sharp rotations beyond technology. European automakers – Renault, Stellantis and BMW – gained between 3.9% and 5.6% at the open in London, while travel stocks including Lufthansa (+5.7%) and Ryanair (+5.5%) surged on lower jet-fuel cost expectations. ³

Energy names absorbed the mirror-image selling: BP fell roughly 4.4%, Shell slipped 4.3%, and TotalEnergies tumbled nearly 5.8% in early European trade, as oil’s sharp decline hit upstream revenue forecasts. ³

Outlook

Analysts cautioned that the memorandum of understanding is a framework, not a final accord, and that the formal signing ceremony and technical negotiations on nuclear compliance still carry execution risk. The deal’s durability will likely determine whether SoftBank and the broader Asia tech complex can sustain Monday’s outsized moves or give back gains as the details of the nuclear verification process come into focus.

Pakistan, which served as the mediator between the two countries, confirmed that both sides declared “an immediate and permanent termination of military operations on all fronts,” according to Prime Minister Shehbaz Sharif. ³

Not investment advice. For informational purposes only.