Costco’s post-market earnings report on March 5, 2026, centered on membership growth and same-store sales, with key metrics outpacing expectations. The results influenced broader retail and consumer sentiment.
- Same-store sales grew 4.1% YoY, exceeding the 3.8% consensus.
- Total memberships reached 122.5 million, up 5.2% YoY.
- Adjusted EPS of $4.82 beat the $4.65 estimate.
- Costco stock rose 3.7% in after-hours trading.
- S&P 500 Consumer Discretionary Index gained 1.2%.
- Gross margin held steady at 12.1% despite inflationary pressures.
Costco Wholesale Corporation reported stronger-than-expected financial results after the market close on March 5, 2026, drawing heightened investor attention. The company revealed a 4.1% year-over-year increase in same-store sales for the fiscal fourth quarter, surpassing the 3.8% consensus estimate. Membership numbers rose to 122.5 million, up 5.2% from the prior year, with active memberships in the U.S. growing by 5.6%. The performance was particularly notable given macroeconomic pressures, including elevated inflation and shifting consumer spending patterns. Costco’s ability to maintain pricing discipline while expanding membership suggests resilient demand for its value-driven model. The company also reported adjusted earnings per share of $4.82, exceeding the $4.65 forecast by Wall Street analysts. Market reaction followed the release, with Costco’s stock (COST) rising 3.7% in after-hours trading. The gain contributed to a broader rally in the consumer discretionary sector, with the S&P 500 Consumer Discretionary Index gaining 1.2%. The move also impacted related retail stocks, including Walmart (WMT) and Target (TGT), which saw modest increases in trading volume. Analysts noted that Costco’s margin management—maintaining a 12.1% gross margin despite input cost pressures—underscores operational efficiency. The company’s disciplined approach to inventory and supply chain management, especially in energy-sensitive categories like diesel and household goods, was cited as a key differentiator. Meanwhile, the VIX index (^VIX) dipped to 14.3, signaling reduced market volatility following the positive earnings sentiment.