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

Chip Stocks Recovered Today and the Major Indexes Fell Anyway

Major stock indexes fell despite chip stocks recovering from Monday's AI-driven selloff. The Dow and Nasdaq Composite each dropped 0.7% while the S&P 500 fell 0.4%. Rising Treasury yields (10-year at 5.041%, highest since July 2007) and elevated oil prices drove market concerns. The Fed is expected to hike rates by a quarter-point on Wednesday, with future rate decisions dependent on energy costs and inflation pressures.

09/15/2026, 2:26 PM • The Motley Fool

Why Corning Plunged Today

Corning stock fell 14% after announcing a $2 billion equity sale program to fund optical fiber production capacity for AI infrastructure. The decline was exacerbated by broader AI sector weakness following Anthropic CEO's proposal to slow frontier AI model training. However, the analyst suggests the selloff may present a buying opportunity since optical fiber demand should remain strong for AI inference applications.

09/14/2026, 3:21 PM • The Motley Fool

Up to 2 Million Bitcoin Sit Idle Behind a 32% Tax Bill, Sypher Capital Finds

Bitcoin yield strategies have significantly compressed, with basis trades falling below Treasury rates since February 2026 and incentive-driven BTCfi TVL declining 74% from peak. The market is maturing with institutional products like BlackRock's BITA and Goldman Sachs' acquisition of NEOS Investments, shifting focus from highest rates to rates that fit individual holder profiles and tax situations.

09/09/2026, 11:00 AM • GlobeNewswire

The Bond Market Sell-Off Is Appearing in Earnings Reports

Rising bond yields at 20-year highs are impacting corporate earnings and stock performance. Klarna reported strong operational metrics but cut guidance due to softer consumer spending in Germany, causing a 21% stock decline. Home Depot beat expectations despite a frozen housing market but showed limited growth. The higher interest rate environment is pressuring companies reliant on consumer spending and capital-intensive AI buildouts, with hyperscaler capex expected to reach $1.2 trillion next year, increasingly funded by debt.

09/07/2026, 4:15 PM • The Motley Fool

Stock Market Today, Sept. 1: Stocks Slide and Oil Surges Amid U.S.-Iran Tension

U.S. stock markets declined on September 1, 2026, as rising crude oil prices and Treasury yields pressured equities following escalating U.S.-Iran tensions. The S&P 500 fell 0.71%, the Dow dropped 0.79%, and the Nasdaq declined 1.03%, with technology stocks leading the selloff. Growth stocks underperformed value stocks, while oil surged 5%.

09/01/2026, 5:02 PM • The Motley Fool

Prediction: This AI Infrastructure Stock Will Soar After Sept. 3 (Hint: It's Not Broadcom)

Ciena, an optical networking products company, is positioned to deliver strong quarterly results on Sept. 3, driven by surging demand for optical components in AI infrastructure. The company has consistently beaten Wall Street expectations and is benefiting from a supply shortage that's boosting margins. With revenue expected to grow 33% year-over-year and earnings projected to jump 157%, Ciena stock could soar following its earnings report.

08/31/2026, 7:29 AM • The Motley Fool

Wall Street Is Now Backing the Clarity Act. Here's the Most Likely Scenario for What Happens Next With Crypto.

Goldman Sachs has joined Wall Street in backing the Digital Asset Market Clarity Act, but prediction markets suggest final passage is unlikely until mid-2027 at the earliest due to Democratic concerns about ethics provisions. The crypto industry may need to rely on regulatory support from the SEC, CFTC, and OCC if the legislation stalls. Companies with strong Wall Street relationships like Coinbase and Circle are positioned to grow regardless of the Clarity Act's passage.

08/27/2026, 5:13 AM • The Motley Fool

SpaceX Stock Trades Near $140 While Wall Street's Average Target Sits Above $232. Who's Right?

SpaceX stock has fallen back to near its $135 IPO price after peaking at $225.64 in June. Wall Street analysts remain bullish with an average $232.35 price target (68% upside), though predictions range widely from $75 to $450. The key to SpaceX's valuation hinges almost entirely on the success of its AI business, which represents 93% of the company's $28.5 trillion total addressable market. While Starlink and rocket divisions are valuable, investors must believe in SpaceX's ability to scale its AI division profitably.

08/27/2026, 5:10 AM • The Motley Fool

Nvidia and Goldman Sachs Are Betting on Nebius. Should You?

Nebius is scaling rapidly to capitalize on massive AI infrastructure demand, with backing from major institutional investors like Nvidia and Goldman Sachs. While the growth opportunity is significant, the company faces execution risks and short-seller skepticism. Success will depend on whether Nebius can deliver on its ambitious cloud platform economics.

08/25/2026, 4:15 PM • The Motley Fool

Institutional Agentic AI and Autonomous Workflows in Financial Markets Report 2026: Architectural Paradigms, Institutional Deployments, and Comparative Ecosystem Analysis

Financial services are rapidly adopting autonomous multi-agent AI systems across trading, research, and operations. Institutional adoption is projected to surge from 6% to 44% annually, though up to 40% of early initiatives may be canceled by 2027 due to data fragmentation, governance gaps, and regulatory challenges. The report provides frameworks for deploying agentic AI while addressing operational risks, market microstructure vulnerabilities, and employment transformation in capital markets.

08/25/2026, 11:55 AM • GlobeNewswire

Why MPLX Stock Is Suddenly Trending on Wall Street

MPLX, a midstream operator with dominant positioning in natural gas gathering and processing in the Permian Basin, is trending on Wall Street due to strong Q2 earnings, a 7.2% dividend yield, and analyst upgrades. The company increased 2026 spending plans to $2.9 billion to capitalize on growing demand for natural gas and NGL infrastructure, with expected 12.5% dividend growth through 2027. U.S. natural gas demand is projected to increase 15% through 2030, supported by LNG and data center needs.

08/20/2026, 9:30 PM • The Motley Fool

Billionaire Investor David Tepper Recently Dumped Appaloosa Management's Stake in Sandisk and Initiated a New Position In a Stock That Some Wall Street Experts Think Could Eventually Be Worth $10 Trillion

Billionaire investor David Tepper's Appaloosa Management exited its Sandisk position in Q2 2026 and initiated a new stake in SpaceX, which some analysts believe could eventually be worth $10 trillion. Tepper's move suggests skepticism about the memory chip supercycle, while SpaceX's potential in orbital data centers and cost-effective space transportation has attracted significant investor interest.

08/20/2026, 4:05 PM • The Motley Fool

Nvidia Is on Track to Beat the S&P 500 for the 4th Straight Year. Should Its $500 Billion AI Infrastructure Financing Plan Give Investors Pause?

Nvidia has partnered with six major financial institutions (BlackRock, Blackstone, KKR, Apollo Global Management, Brookfield, and Goldman Sachs) to create a $500 billion AI infrastructure financing plan. The deal aims to securitize AI compute assets and diversify Nvidia's customer base beyond hyperscalers. While the plan resembles financial engineering that could amplify an AI slowdown, it positions Nvidia as a critical ecosystem provider and enables recurring revenue streams through inferencing-as-a-service.

08/18/2026, 10:20 AM • The Motley Fool

Not Micron, Not Sandisk. This AI Stock Will Be the Biggest Beneficiary of the Next Infrastructure Bottleneck

Optical networking components are emerging as the next critical bottleneck in AI data center infrastructure. Lumentum Holdings, a leading optical and photonics supplier, is experiencing exceptional growth with revenue up 109% YoY and adjusted EPS up 3.7x. The company projects even stronger growth ahead, with the optical networking market expected to reach $154 billion by 2028. Despite a 140% gain in 2026, analysts project potential upside of 113% over the next three years based on favorable supply-demand dynamics.

08/17/2026, 12:23 PM • The Motley Fool