It Didn't Downgrade the Brand — It Changed the Store: Aldi's Momentum Is Shaking Even High Earners

That US households earning over $100,000 a year shop at Aldi is no longer news. The real news is how fast that share is growing. Aldi will open more than 180 new US stores in 2026 alone, bringing its total to 2,800 locations, and plans to invest $9 billion by 2028 to reach 3,200 stores. Over that same period, its visitor growth has outpaced Costco, Kroger, and Walmart entirely. And this growth isn't being driven by low-income shoppers alone. A recent survey found that households earning over $100,000 a year are actually leaving traditional supermarkets at the steepest rate of any bracket. This isn't the familiar recession story of "trading down to the cheaper brand" — it's "going to a completely different store." That distinction is worth unpacking.

What Kind of Company Is Aldi?

To understand its rapid growth in the US, start with where the company came from. Aldi is a global hard-discount supermarket chain. It's a privately held family business owned by Germany's Albrecht family: brothers Karl and Theo Albrecht inherited their mother's grocery store in 1946 and began expanding it, and by 1961, according to the company itself, they had formalized it into the world's first discount grocery store format. The brothers later split the company into two independently run groups, Aldi Nord and Aldi Süd. The US, Australia, Ireland, China, and southern Germany fall under Aldi Süd, while Belgium, the Netherlands, Spain, France, Poland, and northern Germany fall under Aldi Nord, each running its own brand in its territory. The Aldi commonly seen in the US belongs to the Aldi Süd family — it opened its first US store in Iowa in 1976 and is now headquartered in Batavia, Illinois.

Aldi's US unit states its guiding principle plainly: "If it isn't necessary, we don't do it. Period." That single sentence shows up in concrete form throughout every corner of the store.

• Three core values: "Simplicity" to keep costs down, "Consistency" to maintain top quality, and "Responsibility" to reduce environmental and social footprint — Aldi's three officially stated pillars
• A limited assortment: while a typical supermarket carries 30,000–40,000 SKUs, Aldi carries only around 1,400–2,000 per store, more than 90% of which are private label. Fewer items mean lower logistics and inventory costs, and that savings flows straight into the price tag
• The cart deposit ("ALDI Quarter"): using a cart requires a quarter, refunded when you return it — eliminating cart-retrieval labor costs and passing that savings on in price
• Self-bagging and shelf-free, box-stacked displays: customers bag their own groceries with bags they bring themselves, and products are displayed still in their shipping boxes rather than shelved individually — a device that minimizes in-store labor
• No add-on services ("No Hidden Costs"): non-core services like banking, pharmacy, or check cashing are simply not offered. The logic is to focus purely on grocery sales and return that focus to customers as price
• Private-label quality control: more than 90% of exclusive-brand products are taste-tested and verified in Aldi's own test kitchen, with more than 30,000 products taste-tested last year alone. It also runs a "Double Guarantee" policy, refunding and replacing any product a customer isn't satisfied with. Aldi states its prices run up to 50% below national brands
• ALDI Finds: limited-quantity specials introduced every Wednesday — ranging from food to small appliances, seasonal decor, and gardening supplies. Once they're gone, they're gone, which drives customers to check the store weekly not knowing what will show up next, functioning as a built-in traffic driver
• Sustainability commitments: seafood is sourced only from certified sustainable suppliers, and the company carries Fair Trade- and Rainforest Alliance-certified products. Aldi has pledged to remove an additional 44 types of artificial preservatives, colors, flavors, and sweeteners from its private-label products by December 2027

One logic runs through all of these principles: cut the number of items carried, strip out every labor-intensive add-on service, and return every dollar saved to the price tag. What's playing out in the US right now, this "Aldi momentum," is essentially this 80-year-old formula finally clicking with American consumers for the first time.

What's Happening

Start with the numbers.

• Global scale: as of 2026, Aldi operates more than 13,600 stores across 18 countries. It's expanding from a European core — US, UK, Germany, Australia, China, Spain — into a truly global footprint
• US expansion: Aldi opened more than 225 new stores in 2025 alone, its largest annual store count in roughly 50 years of US operations. Of those, 100 were conversions of bankrupt Southeastern Grocers' Winn-Dixie and Harveys locations into Aldi format (with 220 total conversions planned by 2027). It will add 180-plus more stores in 2026, reaching 2,800 by year-end, and is targeting 3,200 stores by the end of 2028, backed by a $9 billion investment in US operations and logistics infrastructure
• Visitor growth (2025, Placer.ai data): Aldi +8% YoY — ahead of Costco (+5.9%), Albertsons (+1.6%), Kroger (+0.8%), and Walmart (+0.5%)
• Customer base: one in three US households visited Aldi in 2025, with 17 million new customers. Its share of grocery store visits rose from 4.3% in 2022 to 5.7% in 2025
• Yet market share remains small: Aldi 2.8–3.5% vs. Walmart 21–24%, Kroger 10%, Costco 9%, Albertsons 6%, Publix 5% — "small but the fastest-growing challenger"

The growth rate is dominant while the market share is still in the single digits. That gap means Aldi still has a long runway ahead of it — and for the established chains, it's a warning that if this momentum isn't checked now, the gap will keep closing.

Key Insight #1 — High Earners Aren't Switching Brands. They're Switching Stores.

The most striking signal comes from an AlixPartners survey of 1,635 consumers conducted in September. Households earning $100,000-plus a year cut their share of spending at traditional supermarkets by 7 percentage points year-over-year. The 25-34 age bracket posted the second-largest decline, down 6 points. The steepest defection wasn't among low-income shoppers — it was among high earners and young professionals.

An even more interesting data point comes from a separate survey conducted around the same time by Alvarez & Marsal. 42% of respondents said they planned to switch to a cheaper store in spring 2026, up 11 points from the prior fall (31%). Meanwhile, the share who said they'd "just pick cheaper brands at the same store" fell to 35%, down 14 points from a year earlier.

Put those two numbers side by side and the picture becomes clear. The old version of "trading down" meant picking private label over national brands within the same store — an easy-to-reverse shift that could snap back once the economy improved. What's happening now is customers switching stores entirely. That's much harder to undo. Once a customer gets used to the layout and checkout habits of Aldi, Lidl, or Costco, a handful of promotional coupons won't be enough to win them back.

Key Insight #2 — The Stigma That "Cheap Equals Shoddy" Has Broken

There was a precondition that made this channel switch possible: consumer perception of shopping at discount stores has itself changed. In the survey, 68% of respondents agreed that "discount stores are just as clean as traditional stores," and 63% said customer service quality was on par.

Matthew Hamory, AlixPartners' global co-head of retail, put it this way: "American consumers have learned that going to a discount store doesn't mean buying junk. They're buying good-quality fresh food, good-quality private label." Aldi's shelf mix runs more than 90% private label — an extreme simplification of purchasing, logistics, and shelf operations that returns every bit of the resulting margin savings directly to price. For this structure to work, trust that private-label quality is on par with national brands has to be established first — and that trust appears to have finally crossed a tipping point.

Key Insight #3 — This Isn't Just About the Downturn. It's About Trust.

There's another point traditional supermarkets are missing. Among consumers who regularly shop at traditional supermarkets, only 13% believe their own store offers low prices. Even as these chains flood customers with weekly promotions and discount coupons, customers themselves don't actually believe they're getting the lowest price.

The cause is promotion fatigue. About two-thirds of respondents said they like discounts in principle but find it "too complicated to keep track of every deal." 40% avoid buying more than they need to chase a better price, 30% avoid buying multiple units of the same brand to get a discount, roughly 25% don't use digital coupon apps at all, and 16% refuse to sign up for loyalty programs altogether. AlixPartners partner John Clear describes this as "a collapse in consumer trust — because shoppers can't tell when they're actually getting the best price."

By contrast, the Every Day Low Price (EDLP) model used by Aldi, Costco, and Walmart is predictable. Today's price is the same as next week's. The simplicity of EDLP is winning out over the fatigue and distrust generated by promotion-driven, high-low pricing.

Key Insight #4 — Bigger Footprint, Thinner Margins

This trend isn't limited to the US. Aldi's UK unit posted 2024 revenue of £18.1 billion, up from £17.9 billion the year before, but operating profit fell about 21% to £435.5 million (from £552.9 million), pushing its operating margin down to 2.4%. The company cited three causes: price cuts, infrastructure investment, and wage increases. Revenue is growing and so is market share, yet profit is being squeezed — in effect, Aldi is paying for market share with margin.

Even so, Aldi's UK unit didn't back off. It has since committed an additional £1.6 billion over two years to open 80 new stores, with a long-term target of reaching 1,500 UK locations (up from roughly 1,060 today). The result: 2025 revenue growth reaccelerated to 4.8%, and market share climbed to 10.8%. Aldi UK's CEO summed up the strategy this way: "trusted prices, not clubs, gimmicks or tricks." Sacrificing near-term margin to buy trust that "this store is always cheap" is the strategy Aldi is running worldwide — and the momentum observed in the US should be read as running on the same underlying math as this UK playbook.

Business Impact — Kroger and Albertsons, Caught in the "Squeezed Middle"

The biggest losers in this shift are traditional large chains like Kroger and Albertsons — what the industry calls the "squeezed middle." They can't win on price against Walmart and Aldi, and they can't win on loyalty and membership lock-in against Costco. Albertsons CEO Susan Morris admitted on an earnings call that "even higher-income customers are becoming more sensitive to price and value." After its merger with Albertsons fell through, Kroger pivoted toward regional scale, acquiring Giant Eagle for $1.65 billion — sidestepping direct price competition in favor of expanding into non-overlapping markets instead.

There's also evidence to read this as a structural shift rather than cyclical belt-tightening. Over the past three years, inflation-adjusted spending growth has been 2.3% annually for households earning $125,000-plus versus 1.6% for middle-income households ($40,000-$125,000) — a gap that still exists but is narrowing. On top of that, US consumer sentiment hit 84.5 in January 2026, its lowest reading since 2014 and a sharp drop from the prior month's 94.2. 72% of US adults rate the economy as "below average," with 66% citing grocery and consumer-goods prices as a concern and 45% citing job availability. Amid rising white-collar layoffs, even high earners no longer feel psychologically secure. The two legs of the so-called "K-shaped economy" are gradually flattening out.

Implications for Korea's Retail Market

None of this can be read as a story that only applies elsewhere — Korea's retail market has already entered the same phase.

In a slow-growth environment, "value formats" beat "premiumization." According to Korea's Ministry of Trade, Industry and Energy's major retailer sales tracker, total sales in May 2026 (the latest available reading) rose 9.0% year-over-year. Notably, this growth was led by offline (+9.3%) rather than online (+8.8%). But look closer at what's driving that offline growth, and it's department stores (+24.5%) doing all the work — large discount stores (hypermarkets) actually declined -5.1%, a steeper drop than 2025's full-year figure of -4.2%. Behind a headline that looks like offline is recovering, large discount stores alone keep losing ground. This is essentially why Aldi is growing in the UK and US too. In a high-inflation environment, consumers move toward channels offering not "premiumization" but "prices you can trust every day." It's the same reason Coupang, Traders, Costco, No Brand, and Daiso are all strengthening at once in Korea — and the same reason large discount stores alone keep sliding.

Large discount stores need to redefine themselves from "general non-food-heavy stores" into "grocery discounters." As large discount stores' non-food competitiveness rapidly bleeds into online, the way to survive is to push the "transactional format" centered on food and daily necessities to its extreme. Aldi has proven this model through a limited assortment, private-label focus, and stripped-down operations; in Korea, Emart's move to split formats across Traders, No Brand, and Starfield Market, and Lotte Shopping's grocery-focused "Grand Grocery" experiment, point in the same direction.

Private label shouldn't be treated as a margin patch — it needs to be the core weapon of price positioning. This is exactly why Aldi's UK unit, even after stating in its 2024 results that "price investment was the primary driver of the margin decline," didn't retreat. Establishing a private-label price benchmark in frequently repurchased categories — milk, eggs, tofu, ramen, bottled water, frozen food, HMR, detergent, pet supplies — can lock in a customer's entire grocery routine. But because online grocery shopping and dawn delivery are already so strong in Korea, private label can't stay confined to physical stores. Maintaining the same price benchmark across a retailer's own app, delivery apps, and fast-delivery channels is what earns customers' trust that "this brand costs the same wherever I buy it."

The axis of competition is shifting from "promotions" to "cost structure." The news that Aldi UK's operating profit fell 21% looks bad in the short term, but strategically it's a deliberate choice to buy market share. Without lowering the underlying cost structure itself — through purchasing consolidation, logistics efficiency, SKU compression, and improved inventory turnover — no retailer can sustain this game. One-off coupons or card discounts alone won't build structural competitiveness.

The offline answer may not be "bigger stores" but "formats you come back to often, nearby." Both Aldi UK's long-term target (1,500 stores) and its aggressive US expansion (225-plus new stores in 2025) point not toward large flagship stores but toward growing a store network that supports repeat visits within a customer's living radius. In Korea, where large-footprint expansion isn't as easy, this same principle is likely to show up as small- and mid-sized grocery discounters, urban fresh-food stores, and pickup/delivery hub formats.

Even against Coupang and Kurly, "online is the only answer" doesn't hold. Online delivery growth in fresh food and daily necessities is indeed a core cause of large discount stores' struggles. But Aldi's case shows offline can still grow if it has a clear value proposition. That value proposition, though, can't rest on "store experience" alone — it needs to beat or differ from online on at least two of price, quality, speed, and convenience. Rather than competing head-on with delivery speed, it's more realistic to combine offline's inherent strengths — freshness, made-to-order food, bulk sizes, experiential grocery, and pickup convenience.

Implications for Korean Retailers by Company

• Emart / Traders: The lesson Aldi offers is "price trust" and "format differentiation." Traders should lean into Costco-style bulk value, No Brand into Aldi-style private-label value, and Emart's core stores into fresh food, HMR, and neighborhood-focused grocery — with each role more clearly defined. In Q2 2025, standalone Emart turned an operating profit of KRW 15.6 billion (versus a loss of KRW 21.0 billion a year earlier), and Traders posted revenue of KRW 900.3 billion (+8.1%) with operating profit of KRW 30.9 billion — the format-differentiation strategy is starting to show up in the numbers
• Lotte Mart: Still lacks Aldi's "simple, strong price positioning." Grand Grocery (Dogok store visitors +17%, Eunpyeong store food-category customer count +15%) is directionally right, but Lotte Mart doesn't yet have a signature product that customers immediately associate with "definitely cheapest here." Its grocery business (Lotte Mart and Super) posted an operating loss of KRW 45.3 billion in Q2 2025, wider than the year-earlier loss of KRW 13.0 billion, driven by slowing consumer sentiment combined with the added burden of the e-grocery business transferred over from Lotte On — it needs to compress its focus onto a signature set of fresh, ready-to-eat, HMR, and private-label categories
• Homeplus: The opposite extreme of Aldi's playbook. Five straight years of losses, a KRW 1 trillion net loss, and equity down to KRW 239.1 billion pushed Homeplus into court receivership in March 2025 with a plan to consolidate around 67 core stores, but it failed to raise the needed KRW 200 billion. The closure of 37 stores was finalized in June 2026, and on July 3 the Seoul Bankruptcy Court terminated the receivership process entirely, ruling the rehabilitation plan unworkable — effectively a path to bankruptcy. From Aldi's vantage point, this looks like a case of trying to keep every store and ending up keeping none. A decision to redefine surviving stores as high-turnover grocery discounters or local delivery hubs was needed much earlier
• Coupang / Kurly: Should treat Aldi not just as an offline competitor but as a reference point for private label, sourcing, cost reduction, and price trust. If online grocery shopping builds a reputation for being expensive, customers could defect back to offline discount channels like Aldi and Costco
• Convenience stores / SSMs: Can't match Aldi's blanket low pricing, but can carve out a "mini Aldi zone" within frequently repurchased daily necessities and ready-to-eat categories. Guaranteeing everyday-low pricing and private-label quality on 20-30 core staples can drive destination purchasing

Practical Implications

• Pricing strategy / MD: Reduce reliance on high-low promotions starting with core categories, and evaluate EDLP pilots. The core message of this data is that consumer trust comes from price consistency, not promotion frequency
• Private label teams: Position private label not as a margin-defense tool but as "something you can only buy at this store." Aldi's 90%-plus private-label structure is extreme, but the underlying direction — that the channel itself can't shift without quality trust — is worth applying
• CRM / loyalty design: Consumer fatigue with apps, coupon-clipping, and loyalty sign-ups is bigger than expected (16-30% of respondents refuse to participate in various promotions at all). Simple, predictable benefit structures outperform complex reward schemes
• Korea market teams: Now is the time to check, with your own data, whether the shift toward ultra-low-price EDLP-style channels like Daiso, No Brand, and Emart Everyday is spreading to middle-class-and-above households in Korea too. US trends have historically served as a leading indicator for Korea
• Corporate planning: Whether the growth of discount channels is confined to this particular economic cycle, or reflects a structural shift in consumer behavior, is the strategic fork in the road. This data — rising intent to switch stores, growing private-label trust, promotion fatigue — points more toward the latter. Prepare for the possibility that this shift doesn't reverse even once the economy improves
• Investment / finance teams: A decision like Aldi UK's — accepting a decline in operating margin to buy market share — is easy to misread as a bad signal if you only look at the financial statements. Explicitly design the short-term-margin-versus-long-term-share tradeoff and prepare the case to make to your board and investors in advance — without that groundwork, the moment margin slips, teams on the ground tend to retreat back to promotions instead of reforming the cost structure

Conclusion

Aldi's momentum isn't a story about one German discount chain doing well in the US. The core story is that American consumers are redefining not "what they buy" but "where they buy it," and that redefinition is spreading beyond low-income households to families earning over $100,000 a year. Brand discount coupons can't stop this shift, because what customers no longer trust isn't the brand — it's the store's price itself. What traditional retailers trying to survive need to rebuild isn't more promotions. It's store-level price trust.