Diageo's latest quarter tells me the premium tequila boom has ended for the brands that defined it. When Don Julio and Casamigos both fall by double digits while smaller and plainer brands keep growing, the problem is not the drinker or the economy. It is that a famous name no longer does the selling on its own, and the biggest portfolios were built on the assumption that it would.
Shanken News Daily reported on November 6 that Diageo's global organic sales rose 0.6% to $4.9 billion in its fiscal first quarter to September. Every region grew except North America, where organic sales slipped 3.6% on volume down 3.7%. The US is about 36% of Diageo's total sales, so that one weak region is holding back a business that is otherwise moving forward.
Tequila was at the center of the decline. In NielsenIQ off-premise data for the 43 weeks to October 24, Don Julio volume fell 10.7% and Casamigos fell 11.5%, against 7.8% for Diageo's US spirits as a whole. In control states the tequila portfolio was among the weakest parts of a range down about 8%. The company still expects roughly flat sales for the full year, and its chief executive called the quarter a small step in the right direction.
The scale is worth putting in cases, which the report does not do. Don Julio sold 3.63 million nine-liter cases in the US in 2025 and Casamigos 1.64 million, together 5.27 million, or about 13.8% of Diageo's 38.2 million US cases. If this year's off-premise rates held across their full volume, Don Julio would lose about 388,000 cases (3.63 million times 10.7%) and Casamigos about 189,000 (1.64 million times 11.5%), roughly 577,000 between them. That is a rough illustration, since a retail rate will not map exactly onto total depletions, but it is about a third of the 1,667,000 cases Espolòn sold in 2025, a brand I wrote about last week growing 16.2% in control states. Two of the best known tequilas in America may be giving up a third of a successful competitor's entire business in a year.
I do not read that as tequila losing its audience. Last month I wrote about Nielsen data showing craft, self-declared additive-free brands up 18.6% while Casamigos dollars dropped 21%. The money is moving, not leaving. Drinkers who paid for a story in 2021 now want to know what is in the bottle and whether it is worth the price for the occasion in front of them. A household name answered that question for a decade. It does not anymore, and marketing hires alone will not bring that answer back.
This is the shift MezcalSearch was built for. People use the app to look up and compare tequila and mezcal by type, producer and style before they buy, and the searches that matter most come from someone standing between a familiar label and an unfamiliar one. Each of those moments is a small vote. When a big brand loses a few hundred thousand cases, those buyers do not stop drinking agave. They pick something else, and the brands that are easy to find and easy to understand collect them.
My read for importers and retailers is to stop treating the top of the tequila shelf as fixed. The space Diageo's brands are giving up will be filled by producers who can explain themselves in one line. I would watch whether the North America decline narrows by the next quarter, but I would not plan a portfolio around a recovery that depends on the old halo returning.