How Margin Debt Works
Share Button

How Margin Debt Works

Money that is borrowed to buy stocks is sometimes an indicator of future market performance. Here is how it works and why the matter is relevant now.

By Simon Constable
Mon, Mar 8, 2021 1:35amGrey Clock 2 min

Margin debt is a sometimes-overlooked but key part of the stock market that is particularly pertinent right now.

It is the money that investors borrow from stockbrokers to buy securities when they can’t or don’t want to fund the entire purchase with cash. Say an investor wants to purchase 100 shares at $50 each for a total of $5,000 but has only $2,500 to invest. That individual could buy the rest of the shares on margin. The same process can be used to buy exchange-traded funds.

Investors frequently use margin to get more bang for their investing buck. “The pro of margin is that it increases your purchasing power,” says Jeff Deiss, director of wealth planning at ACM in Ridgewood, N.J.

The downside is that brokers typically charge interest on borrowed money. And if the individual starts losing money on the investment, the stockbroker might ask for additional cash as security or collateral. That decision and how much cash will be required will depend on a variety of factors, including the remaining value of the investment, how much money the investor owes the broker and the requirements of the broker.

“Buying on margin comes with a lot of risk, and if you are going to use margin, it is probably a good idea to have some cash on the side,” says Mr. Deiss. Investors who don’t have the required additional cash may be forced to close out their positions at a loss.

A large amount of buying on margin also can be detrimental to the stock market as a whole.

Margin Debt

At the end of January, customer margin debt at U.S. brokers regulated by the Financial Industry Regulatory Authority, or Finra, jumped to $799 billion from $562 billion a year earlier, according to data provided by Finra.

Some analysts say that jump in margin debt came from individual investors, who turned to online trading amid pandemic-related lockdowns. A combination of new easy-to-use trading technology, ultralow borrowing costs and stimulus checks from the federal government helped fuel the phenomenon.

“For younger folks, it’s kind of the drug of choice,” Mr. Deiss says.

The problem is, when there is a lot of margin debt concentrated in a few stocks, those stocks tend to see wild price swings, says Fabiana Fedeli, global head of fundamental equities at Rotterdam-based asset-management company Robeco. Anecdotal evidence indicates that the recent increase in margin debt coincided with higher participation levels by individual investors, she says.

Indeed, certain stocks that became popular with individual investors also saw price volatility earlier this year. “The minute that the margin couldn’t be met, some of the positions had to be sold immediately,” Ms. Fedeli says. “It gives volatility to the market,” she says.



MOST POPULAR

The Australian leather house has opened an immersive four-day pop-up in Manhattan, unveiling its Bloom Collection and redefining what a product launch can look like.

Following the successful launch of its Palais Collection, MAISON de SABRÉ has unveiled a new modular handbag system offering more than 720 styling combinations.

Related Stories
Money
Wall Street Is Counting on Nvidia to Keep the AI Party Going
By David Uberti and Krystal Hur 24/08/2026
Money
China Is Opening the First Regular Cargo Route Through the Arctic
By 18/08/2026
Money
Central Banks Are Stuck in a Rinse-and-Repeat Cycle of Crises
By James Mackintosh 17/08/2026

Nvidia’s earnings will test Wall Street’s confidence in the AI boom.

By David Uberti and Krystal Hur
Mon, Aug 24, 2026 3 min

Chip makers are fighting to assure investors that the artificial-intelligence boom is racing forward. Wall Street might not believe it until Nvidia’s NVDA -0.98%decrease; down pointing triangle Jensen Huang says so.

When Huang steps up to the mic for his company’s earnings call Wednesday, he will have the world’s attention. What he says about Nvidia’s present will preview the future of AI, dictate the path forward for a tech-crazed stock market and influence an American economy increasingly tethered to hopes that the boom won’t go bust.

The $5 trillion chip maker has provided the key building blocks for AI since the launch of ChatGPT in 2022 set off a race for dominance among OpenAI, Anthropic and established Silicon Valley giants. Now, as Nvidia backstops sprawling data-center projects and an exotic money pipeline to boost chip demand, the company’s influence is arguably bigger than ever.

But there are signs of trouble ahead. Political pushback to AI is growing. A bond selloff propelled borrowing costs to their highest levels in years. The hyperscalers that include some of Nvidia’s key customers—once cash-printing machines—are relying more on debt. OpenAI recently told investors its revenue rose by a tepid 18% in the second quarter while its losses deepened.

Nvidia is increasingly stepping in to shore up potential weak points across the market. Earlier this month, the company teamed up with six of Wall Street’s biggest firms on a $500 billion AI-financing plan, pledging to backstop lending to customers that can’t afford its chips otherwise. The chip maker last week also took a stake in Cloverleaf Infrastructure, which arranges power for data centers, and struck a $6 billion deal with startup Poolside aimed at developing a powerful open-weight AI model.

After watching shares in other chip makers and the so-called Magnificent Seven tech companies swing wildly in recent months, Wall Street is hoping Nvidia can beat expectations—again. The countdown is on.

“It’s kind of becoming more and more like the World Cup final than the Super Bowl at this point,” said Brian Mulberry, chief market strategist at Zacks Investment Management. “It’s just gotten to be that big.”

The company has smashed analysts’ earnings estimates for each of the 14 quarters since the AI boom kicked into high gear. Nvidia posted 210% annual growth in net income in its last three-month period, according to FactSet, making Wall Street’s 126% projection look pedestrian.

Expectations for a blowout second quarter have risen rapidly over the course of this year. All Nvidia will have to do to beat this target: outrun 95% annual earnings growth to more than $51.5 billion. Analysts project the chip maker will report record sales of $92 billion for the period, up from a forecast of $78 billion at the start of this year.

In July, big-tech earnings sparked volatility. Concerns about runaway capital spending spread across the sector after Alphabet’s and Tesla’s results, driving a $890 billion wipeout that contributed to the unwind of hedge fund Situational Awareness. Microsoft posted the largest one-day gain in market capitalization by any company, ever, after a quarter proving that it could still show investors the money. SpaceX rocketed higher after a record-breaking initial public offering, only to see $1 trillion in value evaporate.

Surging memory prices and borrowing costs have fueled fears that those and other companies will be unable to keep plowing more money into supplies including Nvidia chips. Shaia Hosseinzadeh, founder of OnyxPoint Global Management, has recently bought dips in AI-infrastructure stocks when Wall Street has strained to absorb massive debt issued by Silicon Valley.

“The macro data is really quite robust,” he said. “Of course, there’s a level at which everything breaks.”

Investors have kept pumping money into the AI trade despite concerns around chip consumers—and to the benefit of chip producers. That is why Nvidia’s outlook for semiconductor demand could send ripples through counterparts such as Micron Technology and Sandisk, developers of the data centers in which their chips reside, and a supply chain of power producers, contractors and other specialists that underpin the globe-spanning AI build-out.

“We joke internally that we’re all Nvidia analysts now,” said David Lefkowitz, head of U.S. equities at UBS Global Wealth Management.

The irony is that investors have tended to sell Nvidia stock immediately after blockbuster earnings, with shares falling each trading session after its four past quarterly reports. Some are betting that will be the case this time around, too.

The options market is pricing in a 5.3% swing, higher or lower, in Nvidia shares during the session following earnings, according to Option Research & Technology Services. That is higher than the 4.8% average move in Nvidia’s stock over the last 12 months after the company reports quarterly results.

In recent days, some of the most actively traded Nvidia options have been put contracts tied to the stock falling from its Friday value of $214.75 to $205 and $210 apiece, according to Cboe Global Markets data. Put options give the right to sell a stock by a set price and typically represent a bearish wager.

Many analysts remain optimistic. Frank Lee, global head of tech hardware and semiconductor research at HSBC Global Investment Research, recently raised his price target for Nvidia shares to $360 from $325, citing, among other things, Nvidia’s strategic partnerships with suppliers and its role as a top contributor to open-source AI.