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

Some experts and investors think short selling—a strategy in which investors bet that a stock will drop in value—helps keep the market healthy.

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.

In 2012, Bill Ackman's hedge fund, Pershing Square, took a $1B short position against supplement company Herbalife after discovering that 82% of the company's distributors never made a profit, calling it a true pyramid scheme.

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.

Shorting is a high-risk and expensive investment strategy that hedge funds specialize in

Most investors buy stocks with the expectation that those stocks will be worth more tomorrow than they are today. Short selling, known as “shorting,” a stock is the opposite: The investor is betting the stock will drop in value.

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.

Many hedge funds use short selling as an alternative investment strategy to offset risk

Hedge funds typically use a "long-short" investment strategy—where funds diversify by investing in a mix of long positions and short positions—to balance risk and maximize profits. Including short positions gives hedge funds some protection against downturns in the market, although the strategy can have uncapped losses for investors.

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.

Bear raiding is a manipulative tactic to bring a stock price down—and part of why short selling can be controversial

Bear raids occur when short sellers use manipulative tactics—like spreading false rumors or coordinating trades—to artificially drive down a stock's price and profit from short positions. Although bear raids are an illegal form of market manipulation, they can spook investors, prompting large selloffs of shares and causing a company's value to plummet. As a result, investors may be hesitant to invest in the company in the future, creating a feedback loop of stock downturn.

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.

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.

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.

Investors need a 'margin account' to short sell stock

Margin accounts are leveraged accounts through brokerage firms that allow investors to make trades without the full amount of capital on hand. Similar to a secured loan, margin accounts often require some form of collateral and typically have a cap on how much investors can borrow. However, trading with a margin account is much riskier than a traditional investment account. Fees and charged interest are due on margin accounts, regardless of trade performance, meaning it's possible for investors to lose more money than just their initial investment.

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.

Listen to a sit-down interview with BlackRock CEO Larry Fink to learn more about his background, the lessons he's learned throughout his career, and his outlook for the future.

Who is Michael Burry?

Michael Burry is best known for shorting the mortgage bond market in 2007. Before the Great Recession, the legendary investor’s firm took a stake in GameStop and argued the company was being undervalued in 2019. Learn more about Burry’s historical impact on markets here.

The 2008 financial system unraveled in a wave of speculation

Michael Lewis—author of the bestselling "The Big Short"—explains how a wave of speculation (among other factors) drove the 2008 collapse, from lenders issuing risky mortgages to Wall Street turning them into fragile securities. He also highlights the few outsiders who recognized the bubble and bet against it before the crash.

In 2023, BlackRock founder Larry Fink turned from an outspoken champion of the 'environmental, social, and governance' framework to a critic.

'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.

Watch a breakdown of 'The Volcker Rule,' which stopped banks from being able to make trades with client money and is one of the most controversial financial regulations to date.

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.

Porsche briefly made Volkswagen the most valuable company in the world in 2008

In the wake of the 2008 global financial crisis, hedge funds began placing short positions on German automaker Volkswagen. Around the same time, Porsche began acquiring a majority stake in Volkswagen, which decreased the amount of available shares, or the "stock float." Porsche then announced that it owned more than 74% of the company, prompting short sellers to realize they had placed more short positions than were logistically possible given that less than 6% of the company's shares were available to trade. In what is largely recognized as the biggest short squeeze in history, Porsche made $10B, and hedge funds lost more than $30B.

Prediction markets—the platforms where users can trade bets that pay out depending on certain event outcomes—have faced questions about insider trading.

How ‘vulture’ hedge funds make money

Some hedge funds specialize in snapping up distressed assets, like failing newspaper chains, and further stripping down their operational expenses in a bid to make a profit from the initial capital outlay. Delve into how one secretive firm known for the practice operates—and what’s at stake for the broader economy.

Special-purpose acquisition companies let companies skirt the IPO process

A video explains how private companies have taken advantage of this loophole, why investing in these companies isn’t always a good idea, and how blank-check companies (as they’re commonly called) work.

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 blockchain applications are worth investing and building

Chris Dixon is a general partner at Andreessen Horowitz. In this hourlong podcast episode, Dixon shares his overall thesis for investing in the cryptocurrency space, the opportunities and limitations of blockchain applications, and why this is the most interesting area for investing and building over the next 10 years.

In early 2021, GameStop's stock surge brought retail investing into the spotlight.

Stephen Findeisen is the YouTuber taking on crypto scams

While many cryptocurrencies are focused on advanced technical projects or real-life uses, the proliferation of easy-to-create memecoins has led to a boom in scams. Stephen Findeisen, aka Coffeezilla, is regarded as one of the best independent investigative journalists exposing high-profile frauds, pump-and-dump schemes, rug-pulls, and more.

Retail investors are not professionals—they invest their own money

For retail investors, the stakes may seem higher and more personal. Critics say that this dynamic means that retail investors are more susceptible to behavioral biases that could lead them to make poor decisions when it comes to buying and selling assets. For instance, fear of missing out could cause a retail investor to buy a stock that is popular but not a financially worthy investment.

A deep dive into Enron, one of the largest accounting scandals in history

Investing comes with great opportunities for reward, but it also carries great risk. Investors learned that the hard way when Enron collapsed. Everyone lost money—from the largest institutions on Wall Street to mom-and-pop investors who bought S&P 500 index funds. This series from American Scandal starts with a close-up into an investment manager at Enron who started to unravel the accounting scandal happening behind the scenes. Listen here.

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.

BlackRock played an integral role in the Federal Reserve's response to the Great Recession, managing about $30B of hard-to-sell Bear Stearns assets on behalf of the New York Fed.

How Jim Chanos used a Wall Street Journal article to uncover Enron's fraud

After seeing an article in the Wall Street Journal about the unclear financials of energy companies, Chanos' firm Kynikos Associates began investigating the finances and accounting of Enron, an American energy corporation that was the seventh-largest company at the time. The firm ended up making $500M on its short positions against Enron.

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.

How COVID-19 brought new investors into the market

With fees removed from the equation and more time at home thanks to pandemic-related lockdowns, Americans who had never bought or sold stocks before started participating in the market. Charles Schwab dubs this cohort “Generation Investor” and notes individuals from all age ranges took part in this phenomenon. Study up here.

Stock buybacks are when a company purchases some of its own shares of stock

This reduces the number of shares on the market and, therefore, makes the remaining shares more valuable. Buybacks have received a lot of criticism in recent years for many reasons, such as how they could artificially inflate share prices.

Read about why America is obsessed with the stories of financial scammers.

Alternative investments have become more popular since the 2008 financial crisis

When the traditional markets crashed during the 2008 financial crisis, many people saw the value of their traditional investments plummet and began to look into alternatives as a result.

In 2008, the 'Big Short' mastermind Michael Burry made more than $700M.

Listen to why Ray Dalio seeks out disagreement

One of Ray Dalio's principles is to constantly be challenged by smart people. He says thoughtful disagreement is key to becoming smarter and making better, more thorough decisions.

A look at the biography of Sam Bankman-Fried by author Michael Lewis

Michael Lewis released a book, "Going Infinite," on the day the subject of the book began his high-profile fraud trial. The book delves into the life of Sam Bankman-Fried, a young billionaire in the cryptocurrency world. Find out what the bestselling author discovered over two years and 100 interviews with Bankman-Fried.

Known as the 'Pecora Hearings,' the widely covered trials following the stock market crash of 1929 generated massive public outrage that forced Congress to impose stricter regulations on Wall Street.

Dissecting the legend of Sam Bankman-Fried

Sam Bankman-Fried, the founder and former CEO of FTX, a cryptocurrency exchange, rose to fame as a crypto visionary and was hailed as a genius. But he had a quick downfall in late 2022 when reports surfaced, implicating him in massive fraud.

What happens when a hedge fund grows too big, too fast?

Dmitry Balyasny, who heads what has become one of the top US hedge fund firms, got a crash course in finance as a teenager, when he started trading stocks—and started losing money. Balyasny went on to lose a whole lot more money. But, this time, it wasn’t his to lose. To find out more about his firm’s remarkable comeback, read this article.