When the market value of the loaned security changes, does the collateral amount change to reflect this?

The margin required of a portfolio of fully-paid securities would generally range from between 15% to 50%, allowing a loan ranging from 50% to 85% of the market value. The factors which determine the actual margin requirement and loan value are as follows:…

Yes. Your Stock Yield Enhancement Program activity is covered by three separate sections in an activity statement:

• IBKR Managed Securities Lent - In this section, cash collateral is listed under Collateral Amount.
• IBKR Managed Securities Lent Activity - This section lists each stock loan transaction including Transaction ID, Quantity, Interest Rate on Customer Collateral and Collateral Amount…

Yes, the lender of the securities is entitled to receive the amount of all dividends and distributions made on loaned securities through the Stock Yield Enhancement Program…

Fully-paid securities are securities in a customer's account that have been completely paid for. Excess margin securities are securities that have not been completely paid for, but that represent the aggregate loan value and market value of each class or series of security required to be segregated for each client as determined under CIRO Rule 4316 divided by the loan or market value, as the case may be, of one unit of the security…