AutoZone Hit 8,000 Stores. The Number That Matters for Its Stock Keeps Shrinking.

AutoZone just cut the ribbon on its 8,000th store, in Murfreesboro, Tennessee, with the state's governor and a senator on hand for the photo line. The straightforward reading is tempting: a company still adding stores in its 47th year is a growth story, so more stores should mean a higher stock price. That picture is not wrong so much as it is aimed at the wrong target. It treats the store count as the engine of shareholder value when, for AutoZone, the actual engine is a number that has been getting smaller.

Here is the picture most investors carry around—and the part it deletes: that profit per share ("EPS," the number the market is really pricing) rises because the company sells more. Sometimes it does. But a company has two levers on EPS, and only one of them is growth. Look at the other one.

The family business that "grew" by shrinking

Put away the acronym for thirty seconds. In the toy version, there are ten people and one hundred dollars of profit. Split evenly, each person gets ten dollars. That is the per-share picture: $100 of profit over 10 shares equals $10 of EPS.

Now the ten co-owners decide to buy out two of the ten as partners, using money borrowed from a bank. Eight owners remain. The business still earns the same $100—no customer bought anything extra—yet each owner now gets $12.50. The per-person number rose 25% without any growth at all. It rose because the denominator got smaller.

Run the paths:

• Base: $100 profit ÷ 10 shares = $10.
• Buy back 2 shares with borrowed cash: 8 shares, $100 profit = $12.50.
• Sales actually grow too: $120 profit ÷ 8 shares = $15.
• Sales turn down: $70 profit ÷ 8 shares = $8.75—worse than the $10 the original ten would have shared.

Now label the props. The pizza is the profit, or net income. The slices are shares. The owners are the shareholders. Buying out partners with borrowed money is a share buyback funded with debt. Hold that last one, because it is the hidden clock: the buyout was financed with a loan, and the loan carries interest that must be paid out of profit before anyone splits anything, whether sales rise or fall. Leverage shrinks the denominator, but it also adds a fixed bill that runs the moment the clock starts.

That is why EPS can outgrow the business underneath it. The trick is not in the numerator. Look at what disappeared underneath it.

AutoZone's EPS is outrunning its profit

Now bring the model to the stock. In the quarter ended May 9, 2026, AutoZone's net income rose 5.4%, from $608.4 million to $641.5 million. Its diluted EPS rose from $35.36 to $38.07—an increase of about 7.7%. Same profit story, two different growth rates. The gap between them is the share count shrinking.

In that same quarter, AutoZone spent $586.3 million buying back 164,000 of its own shares at an average price of about $3,582 apiece. This is not a recent habit. The company has run a share-repurchase program since 1998 and returned enormous sums this way, and it pays no dividend at all. When a company's equity sits below zero—AutoZone's total equity is roughly negative $2.8 billion—that is usually the signature of years of borrowing to buy back stock and hand the cash to shareholders through the back door. A business with no dividend and towering net debt of near $8.8 billion against $3.1 billion in annual operating cash flow is running the buyback machine on borrowed fuel.

Here is the uncomfortable wrinkle for the denominator story right now. The stock has fallen about a third over the past year and sits near its 52-week low, even though the latest reported quarter beat expectations. AutoZone bought those 164,000 shares back at $3,582 apiece; the stock now trades closer to $2,880. When you buy back high and the price falls, you have spent real cash to retire shares that are worth less than you paid. The per-share trick still works arithmetically, but it punishes the pocketbook that funded it.

Where the milestone and the math disagree

Now the store count—the number in the headline—and the part it flatters. As of late August 2026 AutoZone operated 8,031 stores across the Americas: 6,863 in the United States, 1,001 in Mexico, and 167 in Brazil. The U.S. network is 85% of the total, and it is a mature business adding stores around the edges. The genuine expansion fun is happening abroad. In the recent quarter AutoZone opened 57 new U.S. stores, 20 in Mexico, and 5 in Brazil, and it guided toward roughly 355–365 new stores for the full year.

So the 8,000th-store headline and the per-share math are pointing at two different engines. The store number celebrates addition—more rooftops, more shelf space, and a still-growing international footprint. The shareholder return machine runs on subtraction—fewer shares dividing the profit, paid for with borrowed money. Neither engine is illegitimate, and AutoZone's 19%-plus operating margin and roughly 19-times trailing earnings multiple reflect real quality. But a beginner who reads the capsule story "great company, opening more stores" and mistakes that for the whole mechanic of the stock will miss where the value is actually being manufactured and where it is most fragile.

Where the analogy breaks

The family business has now done its job. Here is where it stops being generous. In the toy, every slice is equal and nothing can go wrong between the loan and the payout. Real shares are claims, not slices; the price AutoZone pays for them matters enormously; and the interest on the debt that funds the buyback is a real, recurring obligation that the toy papered over. More importantly, a toy denominator can shrink forever; a real one cannot outrun a falling profit. The mechanism "buy back shares with borrowed money, watch EPS climb" keeps working only while three things hold: underlying earnings keep growing, borrowing stays cheap, and the shares get repurchased below what they are worth. The stock falling a third in a year, to a level where it still trades near 19 times trailing earnings, is the market casting doubt on exactly those three assumptions at once.

Bring the model back to the stock. If you remember one test, use this one: stop watching how many stores AutoZone opens and watch the three inputs that actually move the stock. First, same-store sales and total profit—is the numerator still growing, and is it growing in constant currency, not just on a weaker peso or real? Second, the pace and the price of the buybacks—is the company retiring shares below current market value, or paying up as it did at $3,582? Third, the interest bill on the debt doing the buying—does the fixed charge still fit under a profit that could soften?

The 8,000th store is a real and modestly impressive milestone, and the international story behind it is worth taking seriously. But a growing store count and a growing stock are not the same measurement. Set the ribbon-cutting aside, and ask what the denominator has been doing.