Hear why one short seller thinks short selling is now more important than ever

Hear why some experts and investors think short selling keeps the market healthy

Despite criticism that short selling incentivizes downturns in the market, many experts and investors say that short selling is a critical aspect of price discovery and market efficiency. These experts and investors say that short sellers help detect fraud and prevent stocks from becoming overvalued.

Read about why bans on short selling are a controversial policy

Generally, short selling is legal, but regulations often restrict short positions when a stock has experienced a sharp price decline (more than 10% in one day). However, negative feedback loops in times of financial crisis have given short selling a bad reputation. The government has temporarily banned short selling during previous market downturns—like The Great Recession of 2008 and the early months of the COVID-19 pandemic—but experts argue whether those bans actually improved market stability or just distorted prices.

Retail investors are getting burned by long/short strategies

In the US, many retail investors lack the SEC-mandated status (a high enough net worth, income, and other factors) to directly invest in hedge funds. The regulator considers hedge funds too risky for the masses. Hedge fund-like strategies have emerged as a workaround, despite potential pitfalls.

How a Reddit thread drove GameStop's stock price up and gutted the pockets of short sellers

In 2021, many hedge funds felt like GameStop was overvalued and began placing short positions. However, users in the "r/WallStreetBets" subreddit felt like the hedge funds were too aggressive in their short positions and rallied together to purchase large amounts of GameStop stock, pushing the stock price up. As the stock price rose, hedge funds began buying back their shares to cover their short positions, which also began pushing the stock price up in what's called a "short squeeze."

A short squeeze happens when short sellers increase stock prices by buying shares back quickly

When short sellers realize their positions may be incorrect—usually triggered by increasing share prices—they often try to quickly buy back their shares in order to minimize their total losses. When this happens on a large scale, that buying activity can drastically increase to represent the seemingly high demand for that stock. The result is called a "short squeeze," which refers to short sellers literally being squeezed out of their positions by rising prices.

How one supplement company cost a short seller $1B

Pershing Square, a hedge fund founded and run by Bill Ackman, put short positions on Herbalife in 2012, because it believed the company was a pyramid scheme. Ackman's longtime rival and legendary investor Carl Icahn began buying Herbalife shares, causing the stock price to rise—ultimately hurting Pershing Square's short position.

Tesla short sellers benefited from the company's poor performance in 2025

Tesla was widely considered the most-shorted stock until 2024, despite consistent short-seller losses. Between 2016 and 2020, short sellers reportedly lost more than $11B as Tesla's stock price continued climbing. However, long-held short positions began paying out in 2025 as Musk's foray into politics and his eventual feud with President Trump hurt Tesla's stock performance. In 2025, Tesla short sellers made more than $10B.

A landmark hedge fund court case once reshaped high finance

Hedge fund traders tied to insider trading by probing prosecutors are relatively rare. When billionaire hedge fund legend Steve Cohen, founder of SAC Capital, pleaded guilty to trading on inside information, Wall Street trembled. The outcome of the case remains a cautionary tale for traders today.

Listen to Keith Gill's testimony from the GameStop hearing

"I am not a cat, I am not an institutional investor, nor am I a hedge fund." That's how Keith Gill, aka Roaring Kitty, kicked off his testimony before Congress on the wild trading action in GameStop stock. Lawmakers took notice of the meme stock craze, and the collapse of hedge fund Melvin Capital, opening up an investigation into what exactly moved so much money.

The dot-com stock bubble taught Howard Marks about markets

Annual investment letters from Howard Marks, the billionaire cofounder of top distressed debt shop Oaktree Capital Management, are required reading on Wall Street. The prolific writer and investor explains the distinction between the folly of trying to time the market and the necessity of paying attention to market cycles. The difference makes all the difference in returns.

See a real-time list of the most shorted stocks in the US

Every two weeks, the Nasdaq and New York Stock Exchange release the stocks with the most short positions. Some of the companies with the highest short positions as of early 2026 were Hims & Hers and Groupon.

Using cryptocurrency to turn traditional financial arrangements on their head

Cryptocurrency is poised to drastically change everything in the financial world, including financial arrangements. Decentralized finance makes it easier for virtually anyone to take advantage of financial markets without the need for a bank. However, there are new risks involved as well. Professor of Legal Studies and Business Ethics Kevin Werbach, an expert on Bitcoin and blockchains discusses it all in detail in The Conversation.

Hear what Michael Burry thinks about the possibility of an AI bubble

Since his success shorting subprime mortgage-backed securities in 2008, Burry's positions have often become influential, sparking conversations on platforms like X. In 2025, Burry drew attention for betting against Nvidia and Palantir for being overvalued companies.

Just because a big name company is going public doesn’t guarantee a successful stock

A reporter dove into how highly anticipated IPOs can still be risky, and why retail investors should be wary of investing right away.

'Moneyball' author Michael Lewis believes sports betting is a problem for young men

The noted journalist and author of "Moneyball," "The Big Short," and "The Blind Side" has now fixed his discerning eye on the sports-betting industry. In this interview, he explains why he sees sports betting as a problem for American society, especially boys and young men, and why he believes the government needs to regulate the nascent industry more seriously.

Activist investors use large ownership positions to influence companies

By holding large ownership positions, which often come with leveraged access to a company's board or the ability to force a shareholder vote, activist shareholders can change a company's corporate governance, leadership, and overall direction. Critics argue that activist shareholders hurt companies in the long term by prioritizing short-term higher shareholder returns over sustainability and growth efforts.

Spellcaster: the rise and fall of Sam Bankman-Fried

The rapid collapse of FTX, one of the world's largest cryptocurrency exchanges, in late 2022 shocked the world. At the center of the fiasco was Sam Bankman-Fried, a 29-year-old wunderkind who had entranced politicians, journalists, financiers, and others with his melding of altruism and digital currency. The sordid details revealed as the empire fell captured public attention—venture into the death spiral with this in-depth podcast from Bloomberg.

Jim Simons, mathematician turned government codebreaker turned trader, revolutionized quantitative investing

The late Jim Simons is remembered as one of the most successful (and profitable) hedge fund managers of all time. He went from physically gathering microfilm on commodities pricing decades ago to overseeing a firm that led Wall Street in daily trading volume.

Why private credit has faced challenges in recent years

The factors that some experts say are driving what could be private credit's most challenging era since the 2008 financial crisis include global economic uncertainty around trade and tariffs, investor fears about the amount of money being spent on artificial intelligence, and more.

Ray Dalio argues that American capitalism is broken, citing economic factors like a growing wealth divide

Dalio also points to stalling income growth, weak healthcare systems, and poor educational outcomes when arguing that American capitalism needs serious reform. However, critics point out that Dalio has amassed a large fortune by running the world's largest hedge fund and question whether Dalio really wants economic reform.

Bank runs, explained

A major feature of the modern financial system is trust: if an institution loses it, customers will quickly withdraw deposits and stockholders will sell their shares. This digestible animated video looks into the nature and history of bank runs and...

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

Hank Green on the problem with being a creator

YouTuber Hank Green takes over The Financial Diet's platform to talk about the creator economy. He walks the audience through the financial decisions involved when making content. He also describes brand deals, and who actually owns the content posted on social media platforms—the creator or the platform itself?

Famed American investor Jesse Livermore made millions when the stock market crashed in 1929

Livermore made his first major short against rail company Union Pacific in 1906, coincidentally before an earthquake in San Francisco, which ultimately tanked share prices. During a financial panic the next year, JP Morgan reportedly asked Livermore to increase his long-term investments to restore hope and restabilize the market—which Livermore did. However, Livermore began betting against the market in 1929, sensing that stocks were too hot, and was one of the few people to benefit from the 1929 stock crash.

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

The US national debt has become more important in recent months

In a moment of deep economic uncertainty, the national debt now matters more than ever. Listen to this podcast to find out why and also explore answers to questions like, "Who does the US owe money to and why?"

Meet a payday lender who tried to fight the industry

Phil Locke once ran more than 40 payday lending stores in Michigan before walking away from lending in 2012. Locke left because he said he felt guilty about being a predatory lender. He tried to become a consumer protection advocate and influence reform, but ended up returning to the industry. (Some users may experience an email wall.)

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

Netflix profits when you're not watching, and its movies are designed that way—read a detail-rich critical essay exposing lesser-known Netflix takes

Watch this video that uses Lego bricks to explain how venture capital works.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

Listen to an in-depth conversation on the links between Parkinson's disease and herbicide exposure and the challenging pace of scientific investigation.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

Frank Lloyd Wright's houses are historically hard to sell because they're old, subject to local landmark commissions, and often unfashionable

Watch a 1934 short film starring jazz legend Cab Calloway, a major figure in the Harlem Renaissance's music scene

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

Indefinite cloning of some endangered species may not sustain their longevity because cloning success rates decrease as genetic mutations accumulate.

When caught in the mouths of cardinal fish, seed shrimp release glowing, bioluminescent chemicals, which alert predators of the cardinal fish, prompting the shrimp's ejection.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.