If you're looking for the highest rate on a certificate of deposit (CD), you might have to look beyond your bank. For higher yields and much longer maturity periods — sometimes as long as 30 years or more — consider buying a brokered CD. Just keep in mind that brokered CDs are more complex and risky than traditional CDs. Further, market conditions play a huge role in what's available. Here's what you need to know about brokered CDs and whether they make sense for you. How do brokered CDs work? Like tr ...