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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

Stock Split US Dollar Coin Certificate Forward Reverse Getty

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.

Rocket Coins Calculator Financial Metrics To Moon Crypto Invest Getty

May 21, 2025 by Sean Williams

Alphabet Just Made a Moonshot Stock One of Its Biggest Investments and Dumped 83% of Its Stake in a High-Flying Artificial Intelligence (AI) Giant

There's been a decisive changing of the guard in Alphabet's $1.58 billion investment portfolio.

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May 19, 2025 by Sean Williams

Billionaire David Tepper Sold 56% of Appaloosa's Stake in Nvidia and Is Loading Up On This Artificial Intelligence (AI) Titan Instead

There may be more to Tepper continuing to sell Nvidia stock than just simple profit-taking.

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May 19, 2025 by Sean Williams

Warren Buffett Is Buying a Secret Stock Again -- and Based on Clues, This Is the Company I Believe He's Building a Position In

For the first time since 2023, the Oracle of Omaha is using the confidential tag to build a stake in a company without investors knowing which stock it is.

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May 18, 2025 by Sean Williams

Are President Donald Trump's Tariffs Impacting Social Security's 2026 Cost-of-Living Adjustment (COLA) Estimate? We Have a Clear Answer ...

Social Security's 2026 COLA estimate is climbing, but not for the reason you might think.

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May 18, 2025 by Sean Williams

Warren Buffett Just Sold These 8 Stocks, One of Which Remains a Phenomenal Bargain (and a Top Holding of Mine)

The Oracle of Omaha has been a big-time seller of stocks for 10 consecutive quarters -- but there's one sale he may regret.

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May 17, 2025 by Sean Williams

Social Security Benefit Cuts Are Coming, and President Donald Trump's Popular Proposal Would Speed Things Up

A foundational change to Social Security presented by President Trump would fundamentally weaken the program's financial outlook

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May 17, 2025 by Sean Williams

This Recession Forecasting Tool Hasn't Been Wrong Since 1966 -- and It Has a Clear Message for Wall Street

There's more to forecasting a U.S. recession than meets the eye.

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May 16, 2025 by Sean Williams

Warren Buffett's $174 Billion Warning to Wall Street Serves Up a Bitter Truth for Investors

The stock market's most-decorated money manager has been holstering his company's capital for more than two years for a very good reason.

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May 16, 2025 by Sean Williams

The S&P 500 Did Something in April That's Been Witnessed Only 6 Times in 75 Years -- and It Points to a Very Specific Directional Move for Stocks

An ultra-rare event for Wall Street's benchmark index should have optimists smiling from ear to ear.

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May 15, 2025 by Sean Williams

3 High-Flying Artificial Intelligence (AI) Stocks That Can Plunge Up to 92%, According to Select Wall Street Analysts

Not all public companies riding next-big-thing trends will necessarily be winners.

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May 15, 2025 by Sean Williams

Prediction: Wall Street's Hottest New Trend -- the Bitcoin Treasury Strategy -- Will Be a Spectacular Failure

History suggests the Bitcoin treasury model will be an eventual train wreck.

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May 14, 2025 by Sean Williams

Meet Wall Street's Most Prolific Stock-Split Stock Throughout History -- a Company Whose Shares Have Gained Nearly 337,000% in 52 Years

This brand-name business has split its stock a staggering 14 times in less than 50 years.

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May 14, 2025 by Sean Williams

Here Are 8 Stocks Warren Buffett Bought During the First 3 Months of 2025 -- Including 2 Legal Monopolies

The Oracle of Omaha is finding pockets of value amid a historically pricey stock market.

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May 13, 2025 by Sean Williams

3 Seemingly Unstoppable Stocks I'd Sell Right Now

Three of Wall Street's most widely held stocks may soon be in for a rude awakening.

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May 13, 2025 by Sean Williams

We Just Observed the S&P 500 Do Something for Only the 8th Time Since 1950 -- and It Has an Immaculate Track Record of Forecasting What's Next for Stocks

An infrequent event for Wall Street's benchmark index can be a generational opportunity for investors.

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