Why is Costco Wholesale stock rallying today?

Costco Wholesale stock rose 2.1% in morning trading after the membership warehouse retailer released a standout October sales update, reporting net sales of $24.50 billion for the four weeks ended November 1, 2026 — a 12.6% increase from the same period a year earlier. For the first nine weeks of the fiscal period, net sales reached $54.52 billion, up 12.8% year-over-year, with total comparable sales climbing 11.1% over the four-week period and 11.3% over the nine-week period, led by a 12.6% comparable-sales gain in the United States.

Adding further momentum, JPMorgan raised its price target on the stock to $1,150 from a prior $1,020 while maintaining its Overweight rating, and Gordon Haskett reiterated a Buy with a $1,200 target. A separate competitive tailwind emerged as the Federal Trade Commission launched a formal pricing probe into rivals Walmart and Target — among nine companies ordered to disclose how they use consumer data to set prices — a development that reinforced Costco’s reputation as the most price-transparent operator in the warehouse retail space.

The broader market provided a stark contrast to Costco’s strength. The S&P 500 fell 1.6%, the Dow Jones slipped 0.7%, and the Nasdaq dropped 3.0% as the post-midterm election rally faded and semiconductor stocks came under heavy selling pressure. The session’s rotation away from technology and toward consumer-facing and defensive names offered an additional tailwind for Costco, which sits at the intersection of both categories.

Together, the combination of an accelerating top-line sales trajectory, fresh analyst price target upgrades, and a competitive landscape shift created a compelling case for investors to bid up the stock even as the broader market retreated, pushing shares to trade at $1,068.69 — well above their prior close of $1,046.47 and within striking distance of the 52-week high of $1,096.50.