The Pharmacy CounterNarrow moat

Walmart (WMT) — moat facet

The fastest-growing category in Walmart's American business is the one whose prices somebody else now sets.

Health and wellness has been the fastest-growing thing in Walmart's American business and it is now the category most exposed to somebody else's decision.

Walmart U.S. health and wellness net sales ($bn)$54.9bnFY2024$62.1bnFY2025$69.5bnFY2026Up 26.7% in two years - and then a maximum fair price regulation took effect on 1 January 2026.
The fastest-growing category in Walmart's American business, and the one where Walmart now has the least influence over its own revenue line.

The growth first. Health and wellness net sales at Walmart U.S. went $54,898 million, $62,092 million, $69,547 million across three fiscal years1 — a 26.7% increase over two years, in a segment growing about 4.7% a year. The category is pharmacy, over-the-counter medicines, other medical products and optical2, and it works for the same structural reason grocery does: a prescription is refilled monthly, at a counter inside the store, by somebody who is then in the building.

It is also a category where scale genuinely converts into cost. A pharmacy counter inside most of 4,611 American stores negotiates with distributors and benefit managers from a position no regional chain has, and the drive-through window is a convenience that a mail-order competitor cannot replicate for the prescription somebody needs today.

Then Washington changed the price. A new maximum fair price regulation took effect on 1 January 2026, and in the June quarter it deflated Walmart U.S. comparable sales by approximately 125 basis points3 — a headwind on the whole segment caused by a single category. Walmart's comps would have been about 3.9% rather than 2.6% without it.

That is the defining feature of this sub-aspect. It is a real advantage in a category whose prices are increasingly set by statute rather than by negotiation, which caps the value of being good at it.

The pharmacy drag on comparable sales is the figure to hold: 125 basis points in the June 2026 quarter4. It is a known, dated, mechanical headwind. Watch whether it lapses after a year or becomes permanent.

Moat trajectory: Narrowing

The category grew 26.7% in two years and has just met a price ceiling set by statute. A maximum fair price regulation took about 125 basis points off Walmart U.S. comparable sales in the June 2026 quarter, and the programme's scope is legislated to widen. Scale in a category whose prices are set elsewhere is worth less every year.

The number that tests this moat
Reported
Health and wellness net sales
$69,547 million, from $54,898M two years earlier

The fastest-growing category at Walmart U.S. and the one whose prices are increasingly set by statute. A maximum fair price regulation deflated Walmart U.S. comparable sales by about 125 basis points in the June 2026 quarter. Watch whether that headwind annualises out.

Source: Walmart Form 10-K, fiscal year ended January 31, 2026 ↗
⚠ Threats to the moat
⚠ THREAT 01
The Prices Are Set in Washington Now
A government programme set a price, and the largest retailer on earth lost more than a point of comparable-sales growth.
References
  1. Moat Explorer calcHealth and wellness net sales at Walmart U.S. went $54,898 million, $62,092 million, $69,547 million across three fiscal years — a 26.7% increase over two years, in a segment growing about 4.7% a year.
    Moat Explorer calculation from figures in Walmart's own filings: global eCommerce of about $150.4 billion (Walmart U.S. $99.6B + International $35.8B + Sam's Club $15.0B) against $120.9 billion, a $29.5 billion increase against a $31,875M rise in net sales ($706,413M against $674,538M), about 92%; Walmart U.S. selling floor of 698.7 million square feet (633,724 + 36,609 + 28,375 thousand) and net sales per store of $104.7 million ($482,975M over 4,611 stores); operating margin 4.18% ($29,825M/$713,163M) against 4.31% ($27,012M/$648,125M); net margin 3.07%; gross profit rate 24.2% ($171,018M/$706,413M); grocery 59.1% of Walmart U.S. net sales ($285,482M/$482,975M) against 59.8% ($264,210M/$441,817M) and grocery growth of 3.4%; general merchandise to grocery ratio 0.40 against 0.43; health and wellness +26.7% ($54,898M to $69,547M); payables less inventories $4,210M ($63,061M less $58,851M); rent 0.34% of revenue ($2,434M/$713,163M); capital expenditure 64% of operating cash flow ($26,642M/$41,565M); a 1% overrun on $147,943M of expense is $1,479M; eCommerce penetration 27.5% international ($35.8B/$130,423M) and 20.6% at Walmart U.S. ($99.6B/$482,975M); shareholder returns $15,587M ($7,507M dividends plus $8,080M repurchases) against $14,923M of free cash flow; Q2 FY2027 net income attributable down 9.4% ($6,366M against $7,026M); Walmart U.S. comparable sales of about 3.9% excluding the 125 basis point pharmacy headwind — FY2024-Q2 FY2027 · publ. September 2026 · source ↗
  2. ReportedThe category is pharmacy, over-the-counter medicines, other medical products and optical, and it works for the same structural reason grocery does: a prescription is refilled monthly, at a counter inside the store, by somebody who is then in the building.
    Walmart Form 10-K, fiscal year ended January 31, 2026 - Item 1 Business and Item 2 Properties (approximately 280 million customers a week across more than 10,900 stores in 19 countries; 2.1 million associates, 1.6 million in the U.S.; 4,611 Walmart U.S. retail units of which 3,728 owned, 601 Sam's Clubs of which 464 owned, 5,743 international stores of which 1,486 owned; 3,566 supercenters at 633,724 thousand square feet, 351 discount stores at 36,609, 694 neighborhood markets and small formats at 36,609/28,375 with a 42,000 average; 192 U.S. and 179 international distribution facilities, 149 owned; pickup and delivery at over 8,400 locations globally; EDLP and EDLC; private brands; competition; Flipkart and PhonePe majority stakes in 2018) — FY2026 (ended January 31, 2026) · publ. March 13, 2026 · source ↗
  3. ReportedA new maximum fair price regulation took effect on 1 January 2026, and in the June quarter it deflated Walmart U.S. comparable sales by approximately 125 basis points — a headwind on the whole segment caused by a single category.
    Walmart second-quarter fiscal 2027 earnings presentation (Form 8-K exhibit 99.2) - Walmart U.S. comp sales +2.6% with transactions excluding fuel +1.5% and average ticket excluding fuel +1.1% against total like-for-like inflation of 1.4%, and an approximately 125 basis point pharmacy headwind from maximum fair price regulation; eCommerce +24% including approximately 43% growth in store-fulfilled delivery, total advertising +38% including Walmart Connect +43%, and Marketplace sales +52%; expedited deliveries under three hours approximately 37% of store-fulfilled orders; share gains across categories and income tiers led by upper-income households — Q2 FY2027 · publ. August 20, 2026 · source ↗
  4. ReportedThe pharmacy drag on comparable sales is the figure to hold: 125 basis points in the June 2026 quarter.
    Walmart second-quarter fiscal 2027 earnings presentation (Form 8-K exhibit 99.2) - Walmart U.S. comp sales +2.6% with transactions excluding fuel +1.5% and average ticket excluding fuel +1.1% against total like-for-like inflation of 1.4%, and an approximately 125 basis point pharmacy headwind from maximum fair price regulation; eCommerce +24% including approximately 43% growth in store-fulfilled delivery, total advertising +38% including Walmart Connect +43%, and Marketplace sales +52%; expedited deliveries under three hours approximately 37% of store-fulfilled orders; share gains across categories and income tiers led by upper-income households — Q2 FY2027 · publ. August 20, 2026 · source ↗
Sources
Generated September 22, 2026