Customer Sign In

To be eligible, customer must be a current Costco member with a valid Costco Membership number.

* $60/$55 Account Bonus : You will be eligible to receive the account bonus when your Costco membership number has been entered in the ShareBuilder account set-up process and verified. The account bonus will post within approximately 4 to 6 weeks after the first transaction has occurred in each newly opened Individual, Joint and Custodial Account with ShareBuilder. ShareBuilder and Costco reserve the right to terminate this offer at any time. Not valid with any other offer. Limit one ShareBuilder promotional award per unique customer or custodial beneficiary. Offer excludes Individual Retirement Accounts and Education Savings Accounts.

Quarterly Rebate Terms & Conditions: Costco members who make at least one automatic transaction or subscribe to either the Standard or Advantage Investing Program each month during a calendar quarter (starting with the first month of a calendar quarter) will receive a rebate on all automatic transaction and subscription for that calendar quarter. The rebate will be credited to their ShareBuilder account within 4 to 6 weeks of the end of the calendar quarter. This rebate will be paid on a quarterly basis. Qualifying Costco Executive Members will receive a 25% rebate and qualifying Costco Business and Gold Star Members will receive a 10% rebate. Rebate excludes Real-time Trades (rebate is paid only on recurring $4 transaction charges or $12 and $20 subscription).

ShareBuilder reserves the right to terminate this offer at any time and to refuse or recover any promotion award if ShareBuilder determines that it was obtained under wrongful or fraudulent circumstances, that inaccurate or incomplete information was provided in opening the account, or that any term of ShareBuilder's Account Agreement has been violated.

See website for complete information including pricing & rates. Does not include Real-time Trades.

ShareBuilder Securities Corporation is a registered broker/dealer that is not affiliated with Costco. By opening an account, you will become a customer of ShareBuilder Securities Corporation. Costco is not a broker and is not a member of any stock exchange or SIPC and is not facilitating your investment in Costco or other companies. Costco will have no involvement in any account you establish with ShareBuilder. Costco is not responsible or liable, directly or indirectly, for any information provided by ShareBuilder or for any damage or loss arising out of or in connection with ShareBuilder Securities Corporation or the ShareBuilder program.