What is a 'Hammer' A hammer is a price pattern in candlestick charting that occurs when a security trades significantly lower than its opening, but rallies later in the day to close either above or near its opening price.
To Cancel an Order Online: 1  Sign in to your account. 2  Under the My Best Buyâ¢ heading, select Orders. 3  Click on the order number and select the items you'd like to cancel. Note: Items cannot be canceled online if they have already been processed for shipping, home delivery or store pickup.
Please Contact Us if you need to: 1  Cancel your pre-order. 2  Update the credit card associated with the pre-order (including changes to the credit card type, credit card number, billing address, and expiration date).