Mercadona Loses Portuguese Market Share for the First Time Since 2019 as Pingo Doce and Lidl Print Q1 2026 Gains — Worldpanel by Numerator Reads 'Maior Dinamismo' Into Storm-and-Energy Quarter

Worldpanel by Numerator — the former Kantar Portugal panel that tracks roughly four thousand Portuguese households against a barcode register — has just dropped its Q1 2026 distribution print, and the headline shifts a six-year market-share story. Mercadona, the Valencia-based discounter that has been the share-of-wallet winner of every quarterly print since it crossed the border in 2019, loses ground for the first time. Pingo Doce, the Jerónimo Martins flagship, and Lidl Portugal both print Q1 gains in the same panel. The reading lands into the same quarter that printed €486 of extra household supermarket spend versus 2019 — the Centromarca number we covered yesterday — and the underlying shifts now matter for the Q2 forward.

What the panel actually says

Worldpanel does not publish the full quota table for free, but the qualitative read is unambiguous in the release seen by Jornal de Negócios: the Portuguese food-retail market shows 'sinais de maior dinamismo no curto prazo', evident in 'mexidas nas quotas de mercado no primeiro trimestre do ano'. The wording is panel-speak for a quarter in which the leader board moved meaningfully against trend. Mercadona's print is the first decline since the operator opened in Vila Nova de Gaia in July 2019. Pingo Doce and Lidl carry the offsetting gains. Continente, Auchan, Intermarché and Minipreço are not flagged as winners or losers in the headline release.

Why Mercadona slips now

Three structural drivers sit behind the print. First, Mercadona's expansion rhythm — which had averaged roughly fifteen new stores a year since 2019 — slowed in late 2025 as the Spanish parent prioritised completing the Setúbal and Algarve catchments before adding density in the Lisboa metro. Second, Pingo Doce's price-positioning move at the end of 2025, with a sustained promotional cadence on private-label fresh and dairy, narrowed the basket-price gap Mercadona had carried as its calling card. Third, the storm-and-energy quarter that defined Q1 — the same one INE caught on the €8.7 billion trade-deficit print Friday — drove household basket compression and a defensive trade-down move from Mercadona's mid-tier private label to the Pingo Doce and Lidl deeper-discount tiers.

The Lidl story is the longer one

Lidl Portugal has been the steadiest share-of-wallet gainer in the panel since 2022. The German discounter now operates well over 280 stores nationally and has built a fresh-and-organic positioning that does not exist in the same form in the Spanish or Italian Lidl networks. Q1 2026's gain confirms what the 2025 fourth-quarter print already suggested: Lidl is the only operator in the Portuguese top five gaining share in every quarter on a trailing-twelve-month basis. Jerónimo Martins's Q1 2026 results released last week showed Pingo Doce's like-for-like sales up 3.5%, and the Worldpanel read corroborates the in-house tape.

What this means for Q2

The bigger question is whether Mercadona's Q1 slip is a cyclical wobble or the first signal that the Spanish operator's growth curve in Portugal is flattening. Mercadona's 2026 capex plan — €120 million in store openings and the Vila do Conde distribution-centre expansion — is the largest in absolute terms of any Portuguese retailer this year, so the operator is not retreating. But the panel's Q1 2026 read is the first hard evidence that the Portuguese food-retail market is no longer the one-way share donation to Mercadona it has been since 2019. Pingo Doce's response — and Sonae MC's Continente positioning, which Worldpanel did not flag in the headline — will set the next move.

Sources: Jornal de Negócios, 10 May 2026; Worldpanel by Numerator Q1 2026 release; Jerónimo Martins Q1 2026 results presentation; Centromarca household spending panel.