{"id":492244,"date":"2026-06-23T22:29:10","date_gmt":"2026-06-23T22:29:10","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/492244\/"},"modified":"2026-06-23T22:29:10","modified_gmt":"2026-06-23T22:29:10","slug":"wall-street-is-getting-trampled-by-an-ai-sell-off-south-korean-market-plunges-10-percent","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/492244\/","title":{"rendered":"Wall Street is getting trampled by an AI sell-off. South Korean market plunges 10 percent"},"content":{"rendered":"<p>Volatility has returned to the stock market, and AI is once again the culprit.<\/p>\n<p>The tech-heavy Nasdaq dropped 2.21 percent and the S&amp;P 500 fell 1.44 percent as investors sold semiconductor chip stocks and other AI-related shares. The Dow, which has less exposure to tech, was down about 0.1 percent.<\/p>\n<p>The S&amp;P and Nasdaq each had their worst day in about two weeks. The declines came after steep sell-offs in Asia. Nerves about AI quickly spiralled into full-on panic trading in South Korea, where the Kospi index tumbled 10 percent, tripping a circuit breaker that led to a 20-minute cooling-off session.<\/p>\n<p>SK Hynix and Samsung, two of the world&#8217;s leading memory chipmakers, tumbled more than 12 percent, dragging the rest of South Korea&#8217;s stock market down with them (the two chipmaking giants make up about half of the Kospi&#8217;s total market value).<\/p>\n<p>US markets kicked off the week on a down note, with the Nasdaq falling 1.3 percent on Monday (local time) before extending losses Tuesday. The mild US tech-sell off Monday spilled into Asian trading hours, and then the sell-off intensified Tuesday.<\/p>\n<p>&#8220;These big moves are part of a growing trend of rising volatility in tech stocks generally,&#8221; James Reilly, senior markets economist at Capital Economics, said in a note. &#8220;This volatility is, in our view, evidence of excessive froth and calls into the question the sustainability of this rally.&#8221;<\/p>\n<p>Traders&#8217; fear isn&#8217;t about anything specific, and there wasn&#8217;t any obvious catalyst to lead to such enthusiastic selling. But those nerves continued in the United States, where tech stocks were having a rough day. Some investors might be taking profits after strong rallies.<\/p>\n<p>Some market analysts pointed to jitters sparked by Google (GOOG) and SpaceX (SPCX) falling somewhat sharply Monday. But Google&#8217;s 5 percent decline was mostly because of a high-profile AI leader defecting to Anthropic, and SpaceX &#8211; which dropped 16 percent Monday &#8211; has some post-IPO jitters that are typical for companies whose stocks boom right out of the gate.<\/p>\n<p>Google fell less than 1 percent Tuesday, while SpaceX gained about 1 percent after fluctuating in volatile trading. Nvidia (NVDA) was about 4 percent lower, weighing on the broader market. Oracle (ORCL) fell more than 5.5 percent, putting it down about 27 percent this month.<\/p>\n<p>Other analysts suggested the markets were reacting to the likelihood that the Federal Reserve may raise interest rates later this year. But that&#8217;s not exactly new information: New Fed Chairman Kevin Warsh held his first press conference last Wednesday to announce that the Fed would double down on its mission to get inflation under control &#8211; a promise that prompted a market sell-off as it interpreted Warsh&#8217;s words as a pledge to raise interest rates later this year.<\/p>\n<p>Semiconductor chip stocks, which have led the market rally this year, fell sharply Tuesday: Micron Technology (MU) dropped 13 percent. Marvell Technology (MRVL) sank 9 percent. Traders are awaiting Micron&#8217;s quarterly earnings results on Wednesday.<\/p>\n<p>Whatever the cause, with AI companies&#8217; sky-high valuations and incredible growth trajectories, it doesn&#8217;t take much to set off investors. The Kospi is up more than 90 percent this year, so when the wind blows in an unexpected direction, it can lead traders &#8211; and, often more consequentially, trading algorithms &#8211; to head for the exits. They fear the top of the Jenga tower could tip over.<\/p>\n<p>The problem, as always with markets, is no one knows how high the Jenga tower goes. We could still be building the foundation.<\/p>\n<p>Nevertheless, the fear in South Korea spread throughout Asia. Japan&#8217;s Nikkei 225 fell 3.6 percent and tech behemoth Softbank sank 15 percent. Most other Asian indexes were down more than 1 percent.<\/p>\n<p>Although tech stocks have been under pressure lately, they really haven&#8217;t dropped all that much: The Nasdaq is down about 5.5 percent from its record high set on 2 June.<\/p>\n<p>Stocks have been at or near record territory for most of the past couple of months. After President Donald Trump announced a ceasefire in Iran in April, the market largely moved on from the war and returned to a sharp focus on AI and the Fed&#8217;s interest rate policy.<\/p>\n<p>Case in point: Oil prices continued to fall a little on Tuesday, as traders cheered apparent progress in peace negotiations.<\/p>\n","protected":false},"excerpt":{"rendered":"Volatility has returned to the stock market, and AI is once again the culprit. The tech-heavy Nasdaq dropped&hellip;\n","protected":false},"author":2,"featured_media":492245,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[365,363,364,111,139,69,145],"class_list":["post-492244","post","type-post","status-publish","format-standard","has-post-thumbnail","category-artificial-intelligence","tag-ai","tag-artificial-intelligence","tag-artificialintelligence","tag-new-zealand","tag-newzealand","tag-nz","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/492244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=492244"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/492244\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/492245"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=492244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=492244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=492244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}