As the Stock Market Flashes a Warning Seen Only 2 Times in 155 Years, Warren Buffett has a Big Warning for Investors

The S&P 500 has surged 26%, 25%, and 18% over the last three years, driven largely by generative AI hype. However, the market's CAPE ratio now stands at 41—a level seen only twice in 155 years (before the dot-com bubble in 1999 and the Great Depression in 1929). Warren Buffett warns that the market is driven by 'gambling' rather than fundamentals, and recommends focusing on valuations and business sustainability rather than chasing speculative trends.

09/17/2026, 3:30 PM • The Motley Fool

Should You Buy Medtronic Stock as Its Hugo Surgical Robot Gains Ground?

Medtronic's stock is down 3% this year despite strong fundamentals, presenting a buying opportunity for growth-oriented investors. The company's Hugo robotic-assisted surgery system is gaining traction and eroding competitor Intuitive Surgical's market dominance. With Q1 FY2027 revenue up 13.7% YoY, raised full-year guidance, a near-Dividend King status (49 consecutive years of dividend increases), and attractive valuation metrics, analysts view the stock as undervalued compared to peers.

09/17/2026, 3:23 PM • The Motley Fool

Why Nvidia-Backed Nebius Group Stock Skyrocketed Thursday Morning

Nebius Group stock surged up to 11.2% Thursday morning after announcing a 20% price increase for on-demand Nvidia GPU access, effective October 1st. The price hike reflects unprecedented AI demand. The company reported 454% year-over-year revenue growth to $582 million in Q2, with management guiding for $3.2 billion full-year revenue and an $8 billion annualized run rate.

09/17/2026, 2:31 PM • The Motley Fool

If You Invest $340 a Month in the Vanguard S&P 500 ETF, Here's What History Says It Could Be Worth in 22 Years

Investing $340 monthly in the Vanguard S&P 500 ETF (VOO) could grow to approximately $606,200 over 22 years at its historical 15% average return since 2010, or $306,975 at the S&P 500's longer-term 10% historical average. The article emphasizes that investment returns matter significantly more than the monthly contribution amount, with compounding playing a crucial role in long-term wealth building.

09/17/2026, 7:30 AM • The Motley Fool

Applied Materials vs. Marvell Technology: Which Tech Stock Is a Better Buy in 2026?

Applied Materials and Marvell Technology are compared as semiconductor investment options for 2026. Applied Materials, a chipmaking equipment manufacturer, shows steady 4.4% revenue growth with a conservative P/E of 35.4 and strong financial metrics. Marvell Technology, focused on AI data center solutions, demonstrates explosive 42.1% growth but trades at a premium P/E of 55.9 with high customer concentration. The author recommends Applied Materials as the less risky choice, citing concerns about Marvell's heavy exposure to AI spending sustainability and intense competition from tech giants.

09/17/2026, 7:15 AM • The Motley Fool

1 AI Stock Poised to Outperform Micron and Sandisk on the Next Infrastructure Surge

Taiwan Semiconductor Manufacturing (TSMC) is positioned to outperform memory chip makers Micron and Sandisk as AI infrastructure spending accelerates. With AI accelerator revenue expected to grow at 60%+ CAGR through 2029 and the company controlling 72.5% of the foundry market, TSMC trades at a discount valuation of 20x forward earnings. Analysts project the stock could reach $850 by 2028, more than doubling from current levels.

09/17/2026, 7:08 AM • The Motley Fool

Should You Buy Oracle Stock While It's Down 53% From Its Peak? The Answer Might Surprise You.

Oracle's cloud infrastructure business is experiencing explosive 120% revenue growth driven by AI demand, with major customers like OpenAI and Meta renting computing capacity. However, the article recommends caution despite attractive valuations, citing concerns about Oracle's $117 billion debt load and uncertainty around whether customers can fulfill $664 billion in remaining performance obligations, particularly OpenAI's $300 billion commitment.

09/17/2026, 6:25 AM • The Motley Fool

Nvidia Has Returned $46 Billion to Shareholders This Year, and Another Major Dividend Hike Could Be Coming

Nvidia, the world's most valuable company with a $5.1 trillion market cap, has returned $46 billion to shareholders through dividends and buybacks in the first half of its fiscal year. The chipmaker boosted its quarterly dividend from $0.01 to $0.25 per share in June and sits on $99.4 billion in cash, positioning it for potential further dividend increases as its AI-driven business continues to generate unprecedented profits.

09/17/2026, 2:05 AM • The Motley Fool

AI Stocks Crashing After Warning Signs Emerge: What Does It Mean for Nvidia, Micron, and SpaceX?

AI stocks are experiencing a sell-off as leaders in AI companies issue warnings about the technology's potential negative impacts. The article examines implications for major players like Nvidia, Micron, and SpaceX, noting that historically such sell-offs have presented buying opportunities for investors.

09/16/2026, 10:31 PM • The Motley Fool

More Than a Quarter of Nvidia's Revenue Now Comes From Customers Based in Taiwan. Should Investors Be Worried?

Nvidia's fiscal Q2 2027 revenue billed to Taiwan-based customers surged to $27.0 billion (28% of total revenue), tripling year-over-year. However, this reflects Taiwan's role as a manufacturing and intermediary hub rather than end-user demand. The real concern is revenue concentration, with a single direct customer accounting for 16% of quarterly revenue. Taiwan's importance spans both manufacturing (TSMC produces chips) and distribution, creating geopolitical risk exposure.

09/16/2026, 8:34 PM • The Motley Fool

Stock Market Today, Sept. 16: Stocks Slip as Fed Raises Rates

The Federal Reserve raised interest rates by 25 basis points to 3.50%-3.75%, marking the first hike in three years. Major indices declined with the S&P 500 falling 0.45%, Dow Jones dropping 1.21%, and Nasdaq slipping 0.01%. AI stocks recovered slightly with Dell, Intel, and Nvidia finishing in the green. Traders are pricing in potential further rate hikes, which typically pressure equities in the short term but historically lead to gains within a year.

09/16/2026, 5:15 PM • The Motley Fool

Forget Nvidia's Chips: Hugging Face Is the Real Reason to Own This Stock Now

Nvidia agreed to acquire Hugging Face for $11.9 billion ($12.9 billion including employee awards), a steep price at 86x annualized revenue. However, the acquisition gives Nvidia strategic access to a platform hosting 3 million models used by 18 million developers and 200,000+ companies. As AI chip competition intensifies from Meta, Microsoft, and others, Hugging Face provides Nvidia a way to remain relevant in the AI ecosystem beyond just selling GPUs. The key to success is maintaining the platform's openness across different hardware and frameworks to preserve developer loyalty.

09/16/2026, 4:02 PM • The Motley Fool

Nvidia Stock Forecast: Where Investors Could Stand in 5 Years

Nvidia, currently the world's largest company with a $5.1 trillion market cap, is projected to deliver significant gains over the next five years despite unlikely 10x returns. With AI infrastructure spending expected to reach $3 trillion by 2030 and Nvidia commanding 80% of the AI accelerator market, the company could see its AI accelerator revenue reach $800 billion. Analysts project Nvidia's stock price could reach $1,586 (7.5x current price) if it maintains 52% annual earnings growth and trades at 21x forward earnings, making it an attractive buy at current valuations of 24x forward earnings.

09/16/2026, 2:23 PM • The Motley Fool

Apple Is Considering Something It Hasn't Done in 15 Years. Here's What Investors Need to Know.

Apple is reportedly considering developing its own AI servers in partnership with Nvidia, marking the company's first enterprise server venture since 2011. The proposed servers would combine Apple's M8 Ultra chips with Nvidia's NVLink Fusion technology for AI inference. If approved, the product wouldn't be available until 2029. This represents a potential strategic shift under new CEO John Ternus, as Apple has historically focused on consumer devices rather than infrastructure investments like its peers in the Magnificent Seven.

09/16/2026, 1:39 PM • The Motley Fool

Prediction: $1,000 Invested in Oracle Stock Could Be Worth This Much by 2030

Oracle is positioned to benefit from the generative AI boom through its cloud infrastructure and data center services, particularly via a $300 billion deal with OpenAI. However, the stock has underperformed peers like Nvidia and Micron. The company faces risks from massive capital expenditures ($90-95 billion expected in fiscal 2027), heavy concentration on OpenAI as a client, and uncertainty about long-term profitability. Analysts predict Oracle stock will deliver around 10% annual returns, turning a $1,000 investment into approximately $1,464 by 2030.

09/16/2026, 8:15 AM • The Motley Fool