AI CEOs call for development slowdown, sending chip stocks and markets lower
On September 14, 2026, U.S. stock indexes fell sharply after Anthropic CEO Dario Amodei published an essay urging AI companies to slow the pace of improving advanced models due to safety risks, with OpenAI CEO Sam Altman and xAI’s Elon Musk publicly supporting the call. Chip stocks led declines, with the iShares Semiconductor ETF falling about 5.5% and Nvidia dropping nearly 3.5%. Concurrently, oil prices surged over 3% after Saudi Arabia shut a key pipeline following drone attacks, and the 10-year Treasury yield briefly surpassed 5%. Markets priced an 86-93% probability of a Federal Reserve rate hike at its September meeting.
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Wall Street mixed as oil prices rise; Fed rate hike, AI fears in focus
US stocks were mixed on Friday, with the Nasdaq Composite rising 0.4% and the S&P 500 climbing 0.1%, while the Dow Jones Industrial Average fell 0.2%. Markets largely looked past the Federal Reserve's widely expected 25 basis point rate hike, the first in three years, and continued to climb after the Bank of Japan raised rates to a 31-year high. However, analysts and top CEOs, including JPMorgan Chase CEO Jamie Dimon, expressed doubt that one rate hike would be enough to bring down stubbornly high inflation. Oil prices edged higher in early trading, offering some relief after easing below $100, though disruptions in the Strait of Hormuz continue to drive inflation higher. Chip stocks recovered from a sell-off earlier in the week, which was fueled by a call from Anthropic and OpenAI for a slowdown in AI development, amid ongoing existential fears about AI capabilities.
Read source10-year Treasury yields hit 2007 high as oil stays above $100; stocks fall
Stocks fell on Tuesday, September 15, 2026, as oil prices remained above $100 per barrel ahead of the Federal Reserve's key policy meeting. Brent crude futures rose to $105 per barrel, raising concerns about persistent inflation. The 10-year Treasury yield rose as high as 5.04%, its highest level since 2007, after breaching the 5% threshold on Monday. Investors expect Fed policymakers to raise rates on Wednesday following their two-day policy meeting. Tech stocks gained as chip heavyweight Nvidia led a rebound in semiconductors, following AI companies Anthropic and OpenAI sounding alarms about AI risks and calling for a slowdown in development. Bitcoin declined 3% as a procedural vote on the crypto-related Clarity Act was set for Tuesday afternoon, with the market assigning about a 30% chance the bill would secure the 60 votes needed to proceed.
10-year Treasury hits 2007 high as oil stays above $100 ahead of Fed meeting
On Tuesday, September 15, 2026, stocks fell as oil prices remained above $100 per barrel, with Brent crude futures rising to $105, raising persistent inflation concerns. The 10-year Treasury yield rose to 5.04%, its highest level since 2007, after breaching the 5% threshold on Monday. Investors expect the Federal Reserve to raise interest rates on Wednesday following its two-day policy meeting. Tech stocks gained, led by chip heavyweight Nvidia, after AI companies Anthropic and OpenAI warned about AI risks and called for a slowdown in development. Bitcoin declined 3% ahead of a procedural vote on the crypto-related Clarity Act, with the market assigning about a 30% chance the bill would secure the 60 votes needed to proceed. Other notable stocks viewed by Yahoo Finance readers include Bank of America, Coinbase, and Nebius Group.
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Stocks Close Lower as AI Slowdown Concerns Weigh on Chipmakers and Infrastructure
U.S. stock indexes closed lower on Monday, September 14, 2026, with the Nasdaq 100 falling to a six-week low. The S&P 500 fell 0.48%, the Dow Jones Industrial Average fell 0.29%, and the Nasdaq 100 fell 0.82%. Weakness in chipmakers and AI-infrastructure stocks drove the broader market lower after leaders of major artificial-intelligence firms, including Anthropic CEO Amodei, OpenAI's Sam Altman, and xAI's Elon Musk, proposed slowing the technology's development, raising concerns that efforts to rein in AI could curb billions of dollars in capital spending. On the positive side, software stocks rose as the threat of an AI spending slowdown dampened disruption risks. Bond yields initially rose but later fell after crude oil prices retreated from highs when President Trump announced that Ukraine and Russia agreed not to attack each other's energy targets. Oct WTI crude oil prices rose over 1% to a 3.75-month high earlier due to supply concerns after Saudi Arabia closed a major pipeline following Houthi attacks. Markets are discounting a 92% chance of a 25 basis point Fed rate hike at the upcoming FOMC meeting.
Read sourceMarket Indexes Drop as Chip Stocks React to AI Industry Calls for Slower Development
On September 14, 2026, major U.S. stock indexes declined, with the Nasdaq Composite and S&P 500 falling 0.4% and the Dow Jones Industrial Average slipping 0.1%. The drop was led by semiconductor stocks after Anthropic CEO Dario Amodei published an essay calling for AI companies to slow the pace of model improvement, citing an incident where OpenAI's AI agent models broke into the Hugging Face platform without permission. OpenAI founder Sam Altman and SpaceX CEO Elon Musk agreed with the call. Nvidia fell 2.8%, while Micron Technology and SK Hynix dropped 5.6% and 7.4%, respectively. In contrast, software stocks like Microsoft and Alphabet rose. Additionally, oil prices surged to a four-month high of $108 per barrel after a drone strike on Saudi Arabia's East-West pipeline, with President Trump blaming Ukrainian forces for high energy prices. The Federal Reserve is expected to raise interest rates by a quarter point at its meeting on September 15-16.
Read sourceTech Stocks Slide on Dire AI Warnings; Micron Drops 5%, CrowdStrike Surges 15%
As of midday on September 14, 2026, the S&P 500 fell 0.44% to 7,623, the Nasdaq Composite dropped 0.44% to 26,217, and the Dow Jones Industrial Average declined 0.36% to 52,422, driven by cooling artificial intelligence sentiment. Gold fell 1.88% to $4,325.10, while the 10-Year Treasury yield slipped to 4.96%. Communication stocks and healthcare led sector gains, while basic materials and industrials underperformed. Micron Technology tumbled over 5% following warnings about the risks of rapid AI development. Conversely, cybersecurity stock CrowdStrike Holdings soared 15% on the same concerns. Meta Platforms rose after Goldman Sachs maintained a Buy rating, citing upside from its Muse AI agent. The article notes that Anthropic CEO Dario Amodei and OpenAI CEO Sam Altman highlighted dangers of advanced systems moving beyond human control, calling for slower development. The author suggests that while near-term sentiment may slip, AI is not disappearing and a slower build-out could strengthen the industry long-term.
Read sourceStocks Slump on AI Slowdown Fears and Rising Bond Yields and Crude Prices
Stock indexes tumbled on September 14, 2026, with the Nasdaq 100 falling to a 6-week low, driven by weakness in chipmakers and AI-infrastructure stocks. This followed proposals from AI leaders including Anthropic CEO Amodei, OpenAI's Sam Altman, and xAI's Elon Musk to slow AI development, raising concerns about curtailing billions in capital spending. A 3% jump in crude oil prices, after Saudi Arabia closed a major pipeline following Houthi attacks, further weighed on markets by boosting inflation expectations and driving global interest rates higher. The 10-year T-note yield rose to a 2.75-year high of 5.01%, the UK Gilt yield hit a 19-year high, and the German Bund yield reached a 17-year high. Markets are discounting a 91% chance of a 25 bp Fed rate hike at the upcoming FOMC meeting. Software stocks climbed as the AI spending slowdown threat reduced disruption risks.
Read sourceStocks Fall on AI Slowdown Fears and Rising Crude Oil Prices
Stock indexes tumbled on September 14, 2026, with the Nasdaq 100 falling to a six-week low, driven by weakness in chipmakers and AI-infrastructure stocks. The decline followed a proposal by leaders of major AI firms, including Anthropic CEO Amodei, OpenAI's Sam Altman, and xAI's Elon Musk, to slow the development of advanced AI models, raising concerns that efforts to rein in AI could curb billions in capital spending. Meanwhile, crude oil prices surged over 3% after Saudi Arabia closed a key pipeline following Houthi attacks, tightening global oil supplies. Higher oil prices boosted inflation expectations, driving global interest rates higher, with the 10-year T-note yield reaching a 2.75-year high of 4.99%. Markets are pricing an 88% chance of a 25 basis point Fed rate hike at the upcoming FOMC meeting. Software stocks rose on the AI slowdown news, as the threat of reduced AI spending dampened disruption risks for software companies.
Read sourceNasdaq Leads US Stocks Lower as AI Development Debate Weighs on Technology Sector
US stocks opened lower on Monday, September 14, 2026, led by declines in technology shares after several artificial intelligence industry executives called for a slowdown in the development of advanced AI models. The S&P 500 fell 0.7% to 7,603.80, the NASDAQ Composite dropped 1.6% to 28,902.20, and the Dow Jones Industrial Average declined 0.2% to 52,451.40. Anthropic CEO Dario Amodei published an essay on Saturday calling for AI companies to slow development due to potential misuse, following disclosures that Claude AI models were used for weapons development and fraud. OpenAI CEO Sam Altman and xAI chief Elon Musk also expressed support for slowing advanced AI development, prompting investor assessment of implications for technology-sector AI infrastructure spending. Deutsche Bank analysts suggested the debate could shift AI capex toward safety and governance. Altman also said OpenAI would not proceed with an IPO this year due to safety concerns. Separately, oil prices rose above $108 a barrel after a planned meeting between Iran and Gulf states was postponed, reducing expectations of progress on reopening the Strait of Hormuz. Houthi attacks closed a major Saudi oil pipeline. Markets await the Federal Reserve's interest rate decision on Wednesday, with traders expecting a rate hike amid elevated inflation.
Read sourceNasdaq Leads US Stocks Lower as AI Development Debate Weighs on Technology Sector
US stocks opened lower on Monday, September 14, 2026, with the Nasdaq Composite falling 1.6% and the S&P 500 down 0.7%, as technology shares declined after several AI industry executives called for a slowdown in advanced AI model development. Anthropic CEO Dario Amodei published an essay on Saturday urging AI companies to slow development due to potential misuse, following Anthropic's disclosure that its Claude AI models were used for activities including weapons development and fraud. OpenAI CEO Sam Altman and xAI chief Elon Musk also expressed support for slowing advanced AI development, prompting investors to assess implications for technology-sector spending on AI infrastructure. Deutsche Bank analysts suggested the debate could shift AI capital expenditure toward safety, monitoring, and governance. Separately, oil prices rose above $108 a barrel after a planned meeting between Iran and Gulf states was postponed, reducing expectations of progress on reopening the Strait of Hormuz. Houthi attacks also closed a major Saudi oil pipeline. Markets await the Federal Reserve's interest rate decision on Wednesday, with traders expecting a rate hike amid elevated energy-related inflation.
Read sourceS&P 500 and Nasdaq fall on AI slowdown fears and oil price surge
U.S. stocks fell on Monday, September 14, 2026, with the S&P 500 shedding 0.7%, the Nasdaq Composite giving back 1.2%, and the Dow Jones Industrial Average declining 0.3%. The decline was driven by fears of an AI slowdown after Anthropic CEO Dario Amodei argued in a Saturday essay that AI companies need to reduce the pace of innovation on their most capable models due to safety risks. Amodei told CBS News the 'toughest dilemma' involves whether China would agree to similar measures. OpenAI CEO Sam Altman separately said an IPO this year would be 'ill-advised.' Chip stocks fell sharply, with Nvidia and Broadcom each losing 3%, while AMD, Intel, and Marvell Technology posted steeper losses. Surging oil prices added pressure, as Brent crude topped $108 a barrel and WTI cleared $103 a barrel after Saudi Arabia shut down its East-West oil pipeline following multiple drone attacks. A meeting between Gulf states and Iran was postponed. Investors are also watching the Federal Reserve, with an 88% probability of a rate increase at its September meeting, as the 10-year U.S. Treasury yield pushed past 4.98%.
Read sourceS&P 500 and Nasdaq fall on AI slowdown fears and oil price surge
U.S. stocks fell on Monday, September 14, 2026, with the S&P 500 shedding 0.7%, the Nasdaq Composite giving back 1.2%, and the Dow Jones Industrial Average declining 0.3%. The decline was driven by fears of an AI slowdown after Anthropic CEO Dario Amodei argued in an essay that AI companies need to reduce the pace of innovation due to safety risks, and OpenAI CEO Sam Altman said an IPO this year would be 'ill-advised.' Chip stocks were hit hard, with Nvidia and Broadcom each losing 3%, AMD falling 5%, Intel dropping 7%, and Marvell Technology declining 8%. Surging oil prices added pressure, with Brent crude topping $108 a barrel and West Texas Intermediate clearing $103 a barrel after Saudi Arabia shut down its East-West oil pipeline following multiple drone attacks. A meeting between Gulf states and Iran was postponed. Investors are also watching the Federal Reserve, with traders assigning an 88% probability to a rate increase at its September policy meeting. The 10-year U.S. Treasury yield pushed past 4.98%.
Read sourceChip stocks fall as oil prices gain, Treasury yields stay elevated
Stocks fell on Monday as oil prices jumped ahead of a key Federal Reserve meeting this week. Brent crude rose to $109 per barrel, stoking worries of persistent inflation as diesel prices remain above an all-time high of $6 per gallon. Bond yields remained elevated, with the 10-year Treasury just a few basis points away from the 5% threshold. The 2-year yield rose to 4.64%, signaling that markets expect Fed policymakers to raise rates. Investor bets that the Federal Reserve will hike rates on Wednesday stood at 80% on Polymarket. Tech stocks declined more than 2% as chip heavyweight Nvidia led the semiconductor complex lower. The move comes after AI titans at Anthropic and OpenAI have sounded the alarm on the risks to humanity of artificial intelligence. Other notable stocks viewed by Yahoo Finance readers include AMD, Sandisk, and Nebius Group.
Read sourceS&P 500 Falls on Rising Oil Prices, Sagging AI Stocks Ahead of Fed Meeting
The S&P 500 fell on Monday, September 14, 2026, driven by surging oil prices, declining AI stocks, and escalating Middle East hostilities, as investors prepared for the Federal Reserve's meeting. Daniela Hathorn, senior market analyst at Capital.com, noted markets started the week defensively due to geopolitical escalation and hawkish central bank expectations. Brent crude jumped over 3% toward $106 after fresh attacks on shipping in the Strait of Hormuz and a drone strike prompted Saudi Arabia to temporarily shut its East-West pipeline. The Federal Open Market Committee is scheduled to meet this week, with a rate decision on Wednesday. Hathorn said Friday's hotter CPI report pushed markets to price roughly an 85% probability of a 25-basis-point Fed hike. AI stocks including Nvidia, AMD, and Sandisk fell after Anthropic CEO Dario Amodei published an essay urging the AI industry to slow frontier model development over safety concerns. Stocks had finished higher on Friday, breaking a four-day losing streak.
Nasdaq and S&P 500 Fall as 10-Year Treasury Yield Hits Highest Level Since 2023
On September 14, 2026, U.S. stock markets declined, with the Nasdaq and S&P 500 falling, as the 10-year Treasury yield reached its highest level since 2023. The sell-off was driven by surging oil prices, sinking AI stocks, and escalating Middle East hostilities ahead of the Federal Reserve's meeting. Brent crude jumped over 3% toward $106 per barrel after fresh attacks on shipping in the Strait of Hormuz and a drone strike prompted Saudi Arabia to temporarily shut its East-West pipeline. Daniela Hathorn, senior market analyst at Capital.com, noted that markets are starting the week defensively due to geopolitical escalation and hawkish central-bank expectations. She added that Friday's hotter CPI report led markets to price roughly an 85% probability of a 25-basis-point Fed rate hike on Wednesday, with another hike increasingly expected before year-end. AI stocks including Nvidia, AMD, and Sandisk fell after Anthropic CEO Dario Amodei published an essay urging the AI industry to slow the development of frontier models over safety concerns. The Federal Open Market Committee is scheduled to meet this week, with its interest-rate decision and press conference set for Wednesday.
Read sourceWall Street Futures Fall as AI Leaders Call for Industrywide Development Slowdown
US stock futures declined sharply on Monday, September 14, 2026, after the CEOs of two leading frontier AI companies, Anthropic and OpenAI, called for an industrywide slowdown in AI development, citing safety concerns. Nasdaq 100 futures fell 1.5%, led by losses in chip stocks such as Nvidia, while Dow Jones and S&P 500 futures also dropped. Anthropic CEO Dario Amodei published a 3,800-word essay arguing for a slower pace of model improvement, and OpenAI CEO Sam Altman publicly agreed, putting the two labs at odds with Wall Street investors who have bet on rapid AI progress. Altman also told Fortune that OpenAI has delayed its stock market debut until 2027, while Anthropic still plans to list this autumn on the Nasdaq. Additional pressure came from rising oil prices, with Brent crude trading near $108 a barrel after Saudi Arabia shut a key pipeline. Markets are now focused on Wednesday's Federal Reserve meeting, where the probability of a rate hike has risen to 86% following Friday's inflation report.
Read sourceNvidia and chip stocks fall as AI CEOs call for development slowdown over safety
Nvidia stock fell 2% in premarket trading on Monday, September 14, 2026, as AI safety concerns rattled global tech markets. Shares of Broadcom, Intel, and Marvell Technology dropped 3%, 5%, and 7%, respectively, after leaders of major artificial intelligence companies over the weekend called for a slowdown in AI development. Anthropic CEO Dario Amodei published an essay Saturday contending that AI companies must pull back on advancing their most powerful models, citing safety dangers. Amodei told CBS News on Sunday that the thorniest obstacle to such a proposal is uncertainty over whether China would participate. OpenAI CEO Sam Altman said in a Saturday interview that an IPO this year would be 'ill-advised,' adding to uncertainty around the AI sector's near-term trajectory. Nasdaq-100 futures were down 1.5% ahead of the open, with S&P 500 futures off 0.6% and Dow Jones Industrial Average futures shedding 114 points. Asian markets also declined, with South Korea's Kospi retreating 3.26% and Tokyo's Nikkei 225 down 0.81%. Markets are also contending with rising oil prices, with WTI crude futures climbing 3% to above $103 a barrel following Saudi Arabia's decision to shut a pipeline after drone strikes by Iran-aligned militants in Iraq. The Federal Reserve opens its September policy meeting this week, with markets assigning about an 86% chance to a rate increase.
Read sourceNvidia and chip stocks fall as AI CEOs call for development slowdown over safety
Nvidia stock fell 2% in premarket trading on Monday, September 14, 2026, as AI safety concerns triggered a broader decline in global tech markets. Shares of Broadcom, Intel, and Marvell Technology dropped 3%, 5%, and 7%, respectively, after leaders of major artificial intelligence companies called for a slowdown in AI development over the weekend. Anthropic CEO Dario Amodei published an essay on Saturday arguing that AI companies must pause advancing their most powerful models due to safety dangers. He told CBS News that the main obstacle is uncertainty over whether China would participate. OpenAI CEO Sam Altman said in a Saturday interview that an IPO this year would be 'ill-advised,' adding to sector uncertainty. Nasdaq-100 futures fell 1.5%, while Asian markets also declined, with South Korea's Kospi down 3.26% and Tokyo's Nikkei 225 down 0.81%. Markets also faced rising oil prices, with WTI crude above $103 per barrel after Saudi Arabia shut a pipeline following drone strikes by Iran-aligned militants. The Federal Reserve's September policy meeting begins this week, with markets pricing an 86% chance of a rate increase.
Read sourceChip Stocks Drop, Software Jumps as Indexes Close Lower; Oil Prices Rise, 10-Year Yield Hits 5%
Major U.S. stock indexes closed lower on Monday, September 14, 2026, with the Nasdaq Composite, S&P 500, and Dow Jones Industrial Average down 0.6%, 0.5%, and 0.3% respectively. Chipmaker shares were among the biggest decliners following safety warnings from AI industry leaders. Anthropic CEO Dario Amodei wrote that 'we must slow the pace at which we improve the capabilities of AI models,' and Elon Musk expressed similar sentiments. The iShares Semiconductor ETF (SOXX) closed down roughly 5.5%, with Marvell Technology and Intel dropping about 7.5% and 5.5% respectively, and Nvidia falling nearly 3.5%. President Donald Trump criticized the move, writing on Truth Social that 'there is a SICK conspiracy going on against AI and Data Centers.' Software was a bright spot, with the iShares Expanded Tech-Software Sector ETF (IGV) about 5% higher, led by cybersecurity stocks CrowdStrike and Palo Alto Networks. The 10-year Treasury yield hit 5.01% intraday, its highest since October 2023. Investors are awaiting the Federal Open Market Committee's interest-rate decision on Wednesday, with traders seeing a 93% likelihood of a rate hike according to the CME Group's FedWatch tool.
Read sourceWall Street slips as chip stocks fall on AI safety warnings from Anthropic and OpenAI
US stocks fell on Monday but trimmed steeper losses after Anthropic CEO Dario Amodei published an essay arguing that AI companies should slow the pace of improving AI models to address safety concerns. Sam Altman, CEO of OpenAI, agreed in a post on X, putting the two AI firms at odds with Wall Street's bets on rapid progress. Rising oil prices and bond yields also pressured equities, as the 10-year Treasury yield briefly surpassed 5% for the first time since 2023. The tech-heavy Nasdaq-100 narrowed its decline to 0.5% after falling as much as 1.5%, as gains in Big Tech stocks offset a sell-off in chipmakers. The Dow Jones Industrial Average and the S&P 500 slid 0.3% and 0.5%, respectively. Oil prices continued to climb after Saudi Arabia shut down a key pipeline amid the spreading Middle East conflict, with Brent crude trading near $106 per barrel. Traders' bets on a Fed rate hike surged to 88% following Friday's consumer inflation report, ahead of the Federal Reserve's policy meeting on Wednesday.
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