月曜日の韓国株式市場は、米イラン和平合意の破綻に対する懸念が高まる中、半導体関連株の上昇を追い風に史上最高値を更新して取引を開始した。
ベンチマークとなるKOSPI指数は、前週末比277.31ポイント（3.7%）高の7,775.31で寄り付き、一時7,800を突破した後、午前9時15分時点では3.54%高の7,763.27となった。
サムスン電子は5.21%上昇し、SKハイニックスは8.54%急伸した。これは、マイクロンが15.49%高、AMDが11.44%高となった金曜日のウォール街の上昇基調を追随したものだ。
韓国取引所は、KOSPI 200先物が5%以上上昇したことを受け、午前9時29分に5分間の買いサイドカー（プログラム売買の効力停止）を発動した。ウォン相場は前セッションから3.8ウォン高の1ドル＝1,467.9ウォンで推移した。
X上の初期の反応では、米イラン間の緊張が高まる中、半導体株の上昇がKOSPIの史上最高値更新を牽引したことが強調されており、アジア市場のまちまちな動きや、ハイテク輸出全般に見られる強気なモメンタムについても言及されている。
Nikkei and KOSPI just ripped to fresh all-time highs on the open: +1% and +3.95%. That’s one of the strongest Asian starts we’ve seen in a while.
— Nova (@NovaXSpace) 2026年5月11日
What matters: this isn’t random noise. Japan’s finally shaking off the yen drag and Korea’s riding the export/tech wave hard. It’s… pic.twitter.com/aX9Wa6FVdR
Mixed start to Asia-Pac trade as the region reflects on last Friday's tech rally and NFP beat, as well as the latest geopolitical developments with US President Trump rejecting Iran's response to the peace proposal: ASX 200 (-0.8%), Nikkei 225 (+0.9%), KOSPI (+3.8%)
— Newsquawk (@Newsquawk) 2026年5月11日
Korean stocks opened at a fresh record high Monday, easily breaching the 7,700-point mark, boosted by an extended rally of blue chip semiconductor shares, despite woes over the U.S.-Iran peace deal at the risk of rupture.https://t.co/XzMlCli59e
— The Korea Times (@koreatimescokr) 2026年5月11日
MIXED START TO ASIA-PAC TRADE AS THE REGION REFLECTS ON LAST FRIDAY'S TECH RALLY AND NFP BEAT, AS WELL AS THE LATEST GEOPOLITICAL DEVELOPMENTS WITH US PRESIDENT TRUMP REJECTING IRAN'S RESPONSE TO THE PEACE PROPOSAL: ASX 200 (-0.8%), NIKKEI 225 (+0.9%), KOSPI (+3.8%) ...
— MarketNewsFeed (@MarketNews_Feed) 2026年5月11日
AIによるレポート AIによって生成された画像
South Korean stocks opened at a fresh record high above 7,900 points on Tuesday, propelled by gains in major chipmakers. The KOSPI rose to 7,953.41 at the opening bell, marking the first time the index has crossed the 7,900 level.
South Korean stocks opened at a fresh record high on Thursday, driven by hopes for a US-Iran peace deal and continued gains in chipmakers.
AIによるレポート
South Korean stocks opened at a fresh record high on Monday as investor appetite for tech shares drove gains.
Seoul stocks opened sharply higher on Monday, with the KOSPI index rising more than 1% and hitting a fresh intraday record, despite fading hopes for a US-Iran peace breakthrough over the weekend. US President Donald Trump canceled a planned trip by US negotiators to Pakistan, while Iran's Foreign Minister Abbas Araghchi headed to Russia.
AIによるレポート
South Korea's benchmark KOSPI index topped 7,000 points for the first time at the opening bell on Wednesday. The surge was driven by U.S. President Donald Trump's announcement pausing operations in the Strait of Hormuz amid efforts to finalize a deal with Iran. The index opened at a record high of 7,093.01.
South Korean stocks opened at a fresh record high on Monday after U.S. President Donald Trump announced plans to free ships stranded in the Strait of Hormuz, amid Washington and Tehran exchanging peace talk proposals. The benchmark KOSPI surged 2.79% to 6,782.93 at the open. Eased Middle East tensions drove the rally.
AIによるレポート
Seoul's benchmark Kospi index briefly topped 6,700 points on Tuesday, hitting a new intraday record driven by large-cap tech shares. The gain came ahead of first-quarter earnings from US big tech firms such as Alphabet and Meta. As of 9:15 a.m., the Kospi stood at 6,656.05, up 41.02 points or 0.62 percent.