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Sean Williams

TMFUltraLong

@AMCScam

A Fool since 2010, and a graduate from UC San Diego with a B.A. in Economics, Sean specializes in the healthcare sector and investment planning. You'll often find him writing about Obamacare, marijuana, drug and device development, Social Security, taxes, retirement issues and general macroeconomic topics of interest.

Recent Articles by Sean Williams

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May 29, 2025 by Sean Williams

Billionaires Philippe Laffont, Chase Coleman, Terry Smith, and Stephen Mandel All Share the Same No. 1 Holding -- and It's Not Nvidia

This "Magnificent" stock that all four prominent billionaires have as their top holding has surged 1,570% since its initial public offering.

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May 29, 2025 by Sean Williams

The Top Holding for CalPERS, America's Largest Public Pension Fund, Is the Closest Thing You'll Find to a Guaranteed Investment on Wall Street

The No. 1 position for the California Public Employees' Retirement System (CalPERS) hasn't lost money on a rolling 20-year basis dating back more than a century.

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May 28, 2025 by Sean Williams

This Operating Metric Is Going to Make or Break Nvidia Stock on May 28

If you're just waiting for Nvidia's sales and earnings per share figures, you'll be missing out on the big picture.

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May 28, 2025 by Sean Williams

Billionaire Stanley Druckenmiller Just Sold One of Wall Street's Hottest Stock-Split Stocks and Is Piling Into a Promising Drugmaker Instead

Duquesne Family Office's chief dumped his entire stake in one of Wall Street's premier stock-split stocks and has continued to load up on a super-cheap drug company for a third straight quarter.

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May 27, 2025 by Sean Williams

Wall Street's Biggest Stock-Split Stock of 2025 Is All Systems Go 2 Weeks From Today

Shares of this company have soared by almost 58,000% since it went public in 1993.

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May 27, 2025 by Sean Williams

Billionaire Ole Andreas Halvorsen Just Bought Nvidia, Tesla, and Meta Platforms, but Dumped His Entire Stake in the Cheapest "Magnificent Seven" Stock

Viking Global Investors' billionaire chief sold the most fundamentally attractive member of the Magnificent Seven in favor of a trio of foundational artificial intelligence (AI) stocks.

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May 26, 2025 by Sean Williams

Prediction: Nvidia Will Underwhelm Wall Street on May 28

Wall Street's favorite artificial intelligence (AI) stock has no room for error.

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May 26, 2025 by Sean Williams

4 Words From Warren Buffett Offer a Grim Reality for Wall Street and Investors

The Oracle of Omaha's long-term vision and his insatiable desire for value don't always align.

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May 26, 2025 by Sean Williams

President Donald Trump's One, Big, Beautiful Bill Breaks a Key Social Security Promise

The president's flagship tax and spending bill is missing a key proposal -- and it may not be by accident.

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May 25, 2025 by Sean Williams

Social Security Retired-Worker Benefits Are Set to Make History Next Week

The average monthly check for retired workers is on track to cross a psychologically important level that's not been witnessed in 90 years.

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May 25, 2025 by Sean Williams

Moody's Just Downgraded the United States' Pristine Credit Rating -- Here's What History Says Happens Next for Stocks

A seemingly major event for credit markets has historically sparked a sizable directional move in equities.

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May 24, 2025 by Sean Williams

President Donald Trump Wants to Give Half of All Social Security Retirees a Raise -- but It Can Backfire

Popular solutions aren't always the right answer.

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May 24, 2025 by Sean Williams

A Rare Signal for the S&P 500 -- Its 15th in the Last 75 Years -- Points to the Stock Market Skyrocketing Over the Next 5 Years

This may well be one of the most bullish possible signs for Wall Street.

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May 23, 2025 by Sean Williams

Billionaire Dan Loeb Sold His Fund's Entire Stake in Tesla and Is Piling Into Wall Street's Preeminent Artificial Intelligence (AI) Stock

Third Point's Dan Loeb is swapping out one of Wall Street's most influential businesses for another innovative leader.

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May 23, 2025 by Sean Williams

Warren Buffett Bought 13 Stocks in the March-Ended Quarter -- 6 of Which He Never Wants to Sell

Forever holdings and legal monopolies were on the Oracle of Omaha's buy list in the first quarter.

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May 22, 2025 by Sean Williams

Wall Street's Newest Stock-Split Stock Has Arrived -- and Its Shares Have Rocketed Higher by 214,200% Since Its IPO

This marks the ninth time in 37 years this unstoppable company has completed a forward split.

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May 22, 2025 by Sean Williams

Billionaire Philippe Laffont Has Cumulatively Sold 83% of Coatue's Nvidia Stake and Is Piling Into Wall Street's Hottest Artificial Intelligence (AI) IPO

Coatue Management's billionaire chief is swapping out the brains of AI-powered data centers for a newly public AI stock with scorching-hot growth potential.

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May 21, 2025 by Sean Williams

Billionaire Stanley Druckenmiller Dumped Shares of Nvidia and Palantir and Is Loading Up on His New Favorite Artificial Intelligence (AI) Stock

Druckenmiller has traded in Wall Street's AI darlings for another trillion-dollar tech giant.

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May 21, 2025 by Sean Williams

58% of Warren Buffett's $287 Billion Portfolio at Berkshire Hathaway Is Invested in Just 4 Unstoppable Stocks

Portfolio concentration is a big reason the Oracle of Omaha has been such a successful investor over six decades.

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May 20, 2025 by Sean Williams

Billionaire Chase Coleman Just Added to Tiger Global's Nvidia Stake for the First Time in Over a Year and Dumped These 2 Artificial Intelligence (AI) Stocks

Tiger Global Management's billionaire chief is loading up on shares of Nvidia and bidding adieu to two fast-growing AI stocks.

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