Certificates of Deposit (CDs) offered by IBKR are not FDIC insured and are subject to the credit risk of the issuing bank.
Additional Information
Are CDs available on TWS FDIC insured?
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Are CDs purchased through us FDIC insured?
What if my balance at an assigned program bank exceeds the FDIC insurance coverage limit?
Can I use the Insured Bank Deposit Sweep Program in an IBKR Lite account?
How do I make sure my accounts do not exceed FDIC coverage limits when using the Insured Bank Deposit Sweep Program?