Options data from Bloomberg suggests Costco’s shares could swing about 3% after its May 28 after‑market earnings release.
Historically, the stock exceeded implied moves in three of eight earnings, with actual drops of 6.6% (Mar 2025) and 4.9% (Sep 2025).
In the past eight quarters, Costco fell after five earnings releases and rose after three, with implied move 3.9% in May 2024 (actual 1%).
The current 3% implied move is lower than the 3.2% implied for the March 2026 release, where the stock moved only 0.3%.