Sean Williams

Sean Williams

TMFUltraLong

Sean Williams is a data-driven Motley Fool contributing analyst who's been investing for 27 years and has penned north of 16,000 articles. You'll find him at the intersection of politics and investing tackling macroeconomic topics of interest (Social Security and Donald Trump's economic/tax policies), analyzing which stocks billionaire investors (e.g., Warren Buffett) are buying and selling, and digging into how the world's most-influential businesses and trends -- everything from the evolution of artificial intelligence (AI) to the next stock split -- are changing Wall Street. He holds a B.A. in Economics from the University of California, San Diego.

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Sep 24, 2025 by Sean Williams

Billionaire Stanley Druckenmiller Jettisoned His Fund's Entire Stake in Palantir and Loaded Up on His Favorite Artificial Intelligence (AI) Stock for a 4th Straight Quarter

Duquesne's billionaire boss bowed out of Wall Street's hottest AI stock while simultaneously piling into a trillion-dollar company that's critical to the long-term success of the AI revolution.

Articles by Sean Williams — Page 43

Billionaire Stanley Druckenmiller Jettisoned His Fund's Entire Stake in Palantir and Loaded Up on His Favorite Artificial Intelligence (AI) Stock for a 4th Straight Quarter

The Buffett Indicator and Shiller P/E Ratio Are in Rarified Territory -- Are Things About to Get Ugly for Stocks?

3 Magnificent Stocks I'm Close to Buying, Even Amid a Historically Pricey Stock Market

Prediction: Warren Buffett Is Retiring in 100 Days, and 3 Big Changes Are Coming to Berkshire Hathaway When He Does

Palantir and Meta Platforms Just Signaled a $17 Billion Warning for Wall Street -- Is It Time to Worry?

Prediction: Alphabet Just Became the 4th Member of the $3 Trillion Club -- but the First $5 Trillion Stock Will Be an Outlier (No, Not Palantir or Oracle!)

70 Million Social Security Beneficiaries Are Set for a "Trump Bump" in 2026 (but It's Not Expected to Amount to Much)

The Stock Market Is on the Verge of Doing Something Observed Only 2 Previous Times in 154 Years

Social Security's 2026 Cost-of-Living Adjustment (COLA) Is on Track to Make History -- and It Still Won't Be Enough for Retirees

This Recession-Forecasting Algorithm Hasn't Been Wrong in 65 Years -- and It Has an Ominous Message for Wall Street

Warren Buffett Has Bought $78 Billion Worth of His Favorite Stock in 7 Years -- but He Currently Prefers Shares of This Legal Monopoly Instead

Costco Has Made 3 Big Changes Over the Last Year, Including a New Perk That's Dividing Many of Its 79.6 Million Members

Billionaire Bill Ackman Has Been a 7-Year Seller of Chipotle, and He's Made a Stock Whose Addressable Market Can 10X by 2033 His Fund's No. 1 Holding

2 Trillion-Dollar Artificial Intelligence (AI) Stocks That Can Plunge Up to 95%, According to Select Wall Street Analysts

These 3 Stock-Split Stocks Are Absolutely Crushing the Benchmark S&P 500 This Year

Billionaire David Tepper of Appaloosa Is Buying 3 Trillion-Dollar Artificial Intelligence (AI) Stocks and Selling 3 Others

Want to Earn a Safe 10.5% Annual Yield and Be Paid Monthly? Invest in the Following 3 Ultra-High-Yield Dividend Stocks.

Move Over, Oracle! This Industry Leader Is Ideally Positioned to Become Wall Street's Next Trillion-Dollar Stock.

Billionaire Warren Buffett Is Wagering $68 Billion on Just 2 Artificial Intelligence (AI) Stocks

Billionaire Stanley Druckenmiller Dumped His Fund's Stake in Tesla and Is Piling Into a Stock That Rallied 56% Last Week Amid Buyout Rumors

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