Muriel Siebert & Co., Inc., has been in business and a member of the New York Stock Exchange since 1967.Learn More
Siebert’s Fully Paid Lending Program lets you earn incremental income on securities that you already own, just by lending them out.Learn More
Siebert has specific forms for different types of clients. Please login to access the correct form for your account type.Login Now
(800) 872-0444
(800) 338-3965
Our Service team is available Monday - Friday 7:30am - 7:00pm EST.
Our Trading Team is available Monday - Friday 7:30am - 7:30pm EST.
Phone: (800) 872-0444International: +1 (212) 644-2400Fax: (212) 486-2784
Submit an inquiry using the form below and a Siebert representative will respond as soon as possible.
Send us a message with your question or comment.[email protected]
Provide your contact information below and a Siebert customer service representative will contact you regarding your questions and comments.
For your convenience, Siebert clients may fund their accounts in a variety of ways.
Know the terms, fees and conditions of your Siebert account.
To access the forms which match your account, please login.
New to Siebert? Open an Account
For Siebert investment account holders - log in with your username and password.
Please check that you have correctly entered your User ID. If you are unable to log in or need further assistance, please contact a Client Service Representative at (800) 872-0444.
Find information and resources related to employer-provided stock plans.