Since the FDIC only insures bank accounts up to $100,000, how do you insure over $100,000 in a banking institution?

That is not a correct statement of fact concerning account insurance. Every type of account ownership is only insured up to 100,000.00. For example, if you have two accounts in individual ownership and each contains $100,000.00, one account is not insured.

However, if you have one account in single ownership in the amount of $100,000, and you have one account in joint ownership with your spouse, each account is properly insured.

Types of ownership:

Custodial Account
Individual Account
Joint Account
Trust Account
Corporate Account
Partnership Account
Public Unit Account

And, so on...

And of course various banks

That is correct guys... so splitting your accounts with diff. institutions and then having joit ownership helps. Or you might want to consider GIC as well... (in case you do not want to take any risk)