Portugal Colonial - Oil prices surge on US-Iran attacks

European equities were muted and the dollar was mixed against main rivals.

"While (oil) prices are still not at crisis levels, the creep upwards will ignite fresh inflationary worries and concerns about how far higher interest rates could move," noted Susannah Streeter, chief investment strategist at Wealth Club.

"That's being reflected in the bond markets, with yields on gilts and US Treasuries rising," she added.

Renewed hostilities in the Middle East followed last week's exchange of fire and came as negotiators struggle to reach a lasting peace deal to keep the crucial Strait of Hormuz open.

The United States struck Iran for the second day running Monday, prompting Tehran to retaliate against US allies in the Gulf, as the two sides battle over the status of the strategic waterway.

Brent North Sea crude, the international benchmark, rallied as much as five percent Monday, before paring gains to trade around 3.5 percent higher.

The main US contract, West Texas Intermediate, also spiked.

- Kospi tanks -

On equity markets, tech firms came under renewed selling pressure after weeks of volatility fuelled by concerns about stretched valuations and questions over the vast sums pumped into the AI sector.

South Korean chip titan SK hynix plunged more than 15 percent, extending a recent bout of selling that has seen the market heavyweight lose nearly 40 percent since hitting a record last month.

The loss came after the firm's US-listed shares soared almost 13 percent on their New York debut following a record $26.5 billion share sale.

Rival Samsung was down more than 10 percent by Monday's close.

"The South Korean market is now considered a key barometer of sentiment towards the chip sector, so when it declines it can have ripple effects across the world," said Kathleen Brooks, research director at trading group XTB.

There were also losses in Tokyo, where tech firms Advantest and Tokyo Electron tumbled.

Shanghai, Singapore, Wellington, Mumbai and Jakarta dropped but Hong Kong, Taipei, Bangkok rose.

Investors are gearing up for the latest earnings season, which will be pored over for an idea about the outlook for the AI industry.

This week sees reports from Taiwanese chip giant TSMC and Dutch firm ASML, which produces chipmaking equipment.

A number of Wall Street banks are also lined up to file, including JP Morgan, Bank of America and Goldman Sachs.

- Key figures around 1100 GMT -

Brent North Sea Crude: UP 3.4 percent at $78.55 a barrel

West Texas Intermediate: UP 3.5 percent at $73.92 a barrel

London - FTSE 100: DOWN 0.1 percent at 10,492.21 points

Paris - CAC 40: UP 0.1 percent at 8,347.29

Frankfurt - DAX: UP 0.2 percent at 25,122.42

Seoul - Kospi: DOWN 9.0 percent at 6,806.93 (close)

Tokyo - Nikkei 225: DOWN 1.9 percent at 67,242.73 (close)

Hong Kong - Hang Seng Index: UP 0.2 percent at 24,213.72 (close)

Shanghai - Composite: DOWN 2.1 percent at 3,913.79 (close)

New York - Dow: UP 0.3 percent at 52,637.01 (close)

Euro/dollar: UP at $1.1435 from $1.1415 on Friday

Pound/dollar: UP at $1.3400 from $1.3397

Dollar/yen: UP at 162.05 yen from 161.72 yen

Euro/pound: UP at 85.36 pence from 85.20 pence

A.Santos--PC