US Margin Debt Is at a Record and Rising Fast in 2026

Margin debt hit a record $1.50 trillion in June 2026, and the number I keep coming back to isn't the level, it's how fast it got there. FINRA's own table shows customer debit balances up 49% from a year earlier and up 23% from the March reading, three straight record months after a two-month drawdown. Leverage that rebuilds this quickly tells you something about who's doing the buying, and it isn't patient money. My view is simple. This doesn't tell me to sell anything, but it does tell me the next drawdown will move faster than the one before it.

What the Data Shows

Start with the source everyone quotes and almost nobody opens. FINRA's margin statistics put debit balances in customers' securities margin accounts at $1,502,072 million in June 2026, up from $1,415,557 million in May and $1,220,922 million in March. A year earlier, in June 2025, the same line read $1,007,961 million. That works out to a 49% increase in twelve months and a 23% increase in a single quarter, and April, May, and June each printed above the prior record.

The other half of that table matters just as much. Free credit balances in the same June 2026 report came in at $217,441 million in cash accounts and $223,412 million in securities margin accounts, roughly $441 billion of cash sitting against $1.50 trillion of borrowing. Net of that cash, customers are short about $1.06 trillion. There isn't much cushion left to meet a call without selling something.

FINRA counts one kind of leverage, which is the loan a broker extends against securities in a margin account. It doesn't count options, leveraged funds, or portfolio margin, and those have been growing on their own track. Cboe's Q2 2026 options industry update, published July 21, 2026, put zero-day-to-expiry volume above 20 million contracts a day, up 46.2% year to date, against total industry average daily volume of 72.8 million contracts. So the $1.50 trillion is a floor on system leverage rather than a ceiling.

Why It Matters for Your Portfolio

Borrowing is expanding while money is getting more expensive, and that combination changes the shape of a selloff rather than causing one. The 10-year Treasury yield was 4.75% on July 31, 2026 per FRED, with the 2-year at 4.28% and the 10-year minus 2-year spread out to 0.45% as of August 3. Higher funding costs don't stop a rally, but they shorten the holding period of everyone using borrowed money, and forced sellers don't care about your thesis. I'm not changing direction on a single position over this. I'm being stricter about size, because size is the part of the trade I still control when the tape decides to move 5% in two sessions.

What I'm Watching

The July margin figure is the next real data point. FINRA publishes its update in the third week of the month following the reference month, so July lands around the third week of August 2026, and I want to see whether the monthly pace cools or prints a fourth straight record. I'm watching the long end alongside it, because a sustained hold above 4.75% on the 10-year while margin balances keep climbing is the pairing that actually worries me, and a move back under 4.50% takes some of that pressure off.

Price is not confirming any of this yet. The S&P 500 futures contract closed at 7,635.75 on August 4, 2026, up 2.18% over five sessions, and the Nasdaq 100 contract ran 2.90% in the same stretch. If the leverage build stalls out while price holds those gains, that's the healthy version of this setup, and it's the one I'd rather see.

Related Reading: The AI Bubble's Early Tripwires Are Already Flashing and The Quiet Supercycle Setup Is Stealth Liquidity Now

Howard is a full-time trader based in New Jersey with 13 years of experience across Forex, crypto, equities, and futures. He started Position Note to document his trades and analysis in public. All positions are disclosed. Nothing here is personalized investment advice.