When AI stocks swing wildly, money doesn’t just sit in cash — it looks for somewhere boring to go. This year, convenience-store chains Couche-Tard, Casey’s, and Murphy USA have all posted double-digit percentage gains, with Casey’s General Stores standing out: shares recently hit a new high after a quarterly earnings beat that surprised even analysts. The common thread is a concept called defensive stock.
A defensive stock is one whose sales don’t swing much with the economy — people still need gas and a bag of chips whether their paycheck went up or down this month. That’s the opposite of a cyclical stock, whose fortunes rise and fall with consumer spending and business cycles, like carmakers or luxury retailers. When markets get volatile, especially around a hot, speculative sector like AI, investors often rotate part of their money toward defensive names precisely because their earnings are boring and predictable — and this year, “boring” has been a very profitable trait.
The numbers behind Casey’s run make the case concretely. Its fuel margin — the profit made on every gallon sold — expanded to 46.9 cents per gallon, up sharply from the prior year, which alone drove fuel gross profit up double digits. That’s a structural quirk of the convenience-store business: retailers restock fuel at whatever the wholesale price happens to be that day, but they don’t lower pump prices as quickly, so when oil prices swing, margins can actually widen rather than shrink. On top of that, inside-store sales — food, drinks, tobacco — grew at a healthy clip, meaning the real profit engine isn’t gasoline at all, it’s the snack aisle. Casey’s earnings beat expectations by a wide enough margin that the stock jumped double digits in a single trading session.
There’s also a mechanical tailwind: once a stock joins a major index like the S&P 500, funds that simply track the index are required to buy it, regardless of how “exciting” the story is. That kind of built-in demand is part of why some formerly overlooked, unglamorous businesses have quietly become some of this year’s best performers.
None of this means defensive stocks always win. Much of this year’s fuel-margin strength has been tied to unusually volatile oil prices — if energy markets calm down, that particular tailwind fades. The lesson isn’t “buy gas stations,” it’s that during periods of speculative excess in one corner of the market, the market often rewards businesses that nobody has to think twice about visiting.
If you’re curious how a company’s profit composition — not just its headline growth — matters for durability, quality of earnings covers the same idea from the other end of the spectrum.
My take: While everyone chased the next AI trade, the actual winner this quarter was a bag of chips and a tank of gas.
Not advice. Just how I see it.