Costco Stock Could See 3% Swing Following Upcoming Earnings Report
Shares of Costco Wholesale Corp. (NASDAQ: COST) may experience a move of around 3% when the retail giant releases its quarterly earnings results on May 28 after market close, according to options market data compiled by Bloomberg.
The projected move reflects investor expectations for volatility surrounding the earnings announcement, as traders position for potential surprises in revenue, profit, or guidance.
Costco Shares Have Often Outperformed Earnings Volatility Expectations
Historical performance shows that Costco stock exceeded options-implied expectations in three of the last eight quarterly earnings reports.
Among the most notable reactions:
- March 2025: Costco shares declined 6.6%, exceeding the implied move of 3.6%
- September 2025: The stock dropped 4.9%, surpassing the expected move of 3.5%
These examples highlight how earnings announcements can trigger larger-than-anticipated price swings despite market forecasts.
Current Earnings Expectations Suggest Lower Volatility Than Previous Quarter
The 3% implied move ahead of the upcoming May earnings release is slightly lower than the 3.2% implied move recorded before the March 2026 report.
During that quarter, however, Costco shares moved only 0.3%, significantly below market expectations, suggesting earnings volatility does not always translate into large stock price fluctuations.
Costco Stock Has Fallen After Most Recent Earnings Releases
Over the last eight quarters, Costco shares have:
- Declined following five earnings reports
- Increased after three earnings announcements
The largest anticipated move during this period occurred in May 2024, when options markets implied a 3.9% swing. In reality, the stock moved only 1%, illustrating the gap that can emerge between expectations and actual market reactions.
Investors will be closely watching Costco’s upcoming results for signs of consumer spending trends, membership growth, and overall retail demand as uncertainty around inflation and economic conditions continues.
