(2nd LD) Seoul shares spike over 5 pct to approach 7,000 on chip rally; won sharply up

Lead

South Korean shares surged more than 5 percent on Monday to close at a record high, approaching the 7,000-point mark, as investors snapped up semiconductor stocks amid optimism over U.S.-Iran peace talks. The Korean won also strengthened sharply against the U.S. dollar, according to Yonhap News Agency.

The benchmark Korea Composite Stock Price Index (KOSPI) added 338.12 points, or 5.12 percent, to a fresh record high of 6,936.99. Trade volume was heavy at 864.3 million shares worth 41.3 trillion won (US$28.2 billion), with losers outnumbering winners 473 to 392.

Coverage Comparison

Multiple reports from Yonhap News Agency, all dated May 4, 2026, detailed the same rally, focusing on the chip-led advance and the geopolitical backdrop. The reports consistently noted that the index opened 2.79 percent higher after U.S. President Donald Trump announced a plan to guide ships not involved in the Iran conflict through the Strait of Hormuz as a "humanitarian gesture" starting this week. A later warning from a senior Iranian official that Tehran would consider any U.S. interference in the strait a ceasefire breach did little to dampen gains, as the KOSPI extended its rise in the afternoon supported by foreign and institutional buying.

One Yonhap report added context on the market's recent trajectory, noting that the main index surpassed the 5,000-point mark in late January and topped the 6,000-point level in February, before recouping losses in March following the outbreak of the U.S.-Iran war in late February. The report said the KOSPI is now approaching the uncharted 7,000-point level on continued optimism over the AI boom and hopes for the reopening of the key waterway.

A separate Yonhap piece, dated later, struck a more cautionary tone, highlighting rising inflation and debt risks as the market celebrated historic highs. That report noted that the KOSPI closed above 7,000 for the first time in history on Wednesday, reaching 7,384.56, and rose further to 7,490.05 on Thursday. It pointed to choppy trading and growing caution over the pace of gains.

Key Claims

• The KOSPI rose by 5.12% on May 4 to a record high of 6,936.99, according to multiple Yonhap reports.
• Semiconductor stocks led the rally, with Samsung Electronics jumping 5.44% to 232,500 won and SK hynix surging 12.52% to a fresh record high of 1.4 million won (as reported by Yonhap; the second figure appeared in one report only).
• The Korean won rose sharply against the U.S. dollar, per Yonhap.
• The market's rise is attributed to U.S.-Iran peace talks and the AI boom, according to several Yonhap reports.
• A later Yonhap analysis cautioned that inflation risks are rising, with consumer prices increasing 2.6% in April from a year earlier, and that debt risks are mounting, with margin lending in the stock market climbing from 27 trillion won to around 36 trillion won.
• The same analysis noted that household expenses are rising, with airfares, logistics costs, and service prices increasing, and that geopolitical uncertainty, including the U.S.-Iran conflict disrupting energy markets and shipping through the Strait of Hormuz, adds to the risks.

Perspectives

Market Optimism: The prevailing view in the May 4 reports is positive, highlighting the record close and the chip-led rally. Analysts, such as Lee Kyung-min at Daishin Securities, cited gains on Wall Street and foreign investor buying ahead of a market holiday as key drivers. The market's rapid climb is seen as a reflection of strong fundamentals, particularly the semiconductor boom tied to AI infrastructure.

Cautionary View: The later Yonhap analysis introduces a note of caution, arguing that while the rally is not "from fantasy," markets can become overly dependent on a single narrative. It warns of overheating risks, citing rising inflation (fastest in 21 months), mounting debt (margin lending up significantly), and geopolitical uncertainties that could derail the rally. The tone is measured but emphasizes the need for investors to weigh these risks.

Context on Market Mechanics: Several reports detail the market's remarkable ascent, from crossing 5,000 in January to approaching 7,000 in May, underscoring the unprecedented pace. The U.S.-Iran conflict and subsequent peace talks are presented as pivotal factors, with the reopening of the Strait of Hormuz seen as a positive catalyst for global trade and energy markets.