Costco drops 3% despite strong March sales as valuation drives profit-taking
Costco shares fell about 3% after the company reported March net sales of $28.41 billion, up 11.3% year over year, and comparable sales up 9.4% for the five weeks ended April 5, 2026. The drop looks driven by valuation-sensitive profit-taking after the stock hovered near the $1,000 level despite strong sales momentum.
1) What happened
Costco Wholesale (COST) is sliding roughly 3% in the latest session, even after posting a solid March sales update. The move comes as investors digest a strong top-line print but appear to be taking profits with the stock trading near the psychologically important $1,000 area and at a premium valuation versus most large-cap retail peers. (investor.costco.com)
2) The catalyst: March sales update vs. expectations
Costco reported net sales of $28.41 billion for the retail month of March (five weeks ended April 5, 2026), an 11.3% increase from the prior year. Total comparable sales rose 9.4% over the same period, showing resilient traffic and demand even with calendar noise that can affect monthly comparisons. (investor.costco.com)
3) Why the stock is down anyway
With the shares recently near record territory, the market reaction looks less about sales momentum and more about positioning and valuation discipline—good news that is already priced in can still trigger a sell-the-news fade. The stock’s dip also lines up with trading behavior around round-number levels, where profit-taking and technical flows can amplify otherwise modest fundamental surprises. (flipsidefinance.com)
4) What to watch next
Investors will likely focus on whether Costco can sustain high-single-digit comps while protecting merchandise margins and leveraging membership income—key drivers that tend to matter more than a single monthly sales snapshot. Any incremental commentary on inflation, mix (including gasoline), and digital growth trends will be the next potential catalyst for direction. (fool.com)