Explanation

In a repurchase agreement (repo), the initial margin serves as a protective mechanism for both parties involved in the transaction:

Key Points:

1. For the cash lender (buyer of securities): The initial margin provides protection against a decline in the value of the collateral securities. If the collateral value falls, the margin ensures the lender still has adequate security for the cash loaned.

2. For the cash borrower (seller of securities): The initial margin protects against having to post additional collateral if the value of the securities increases. Without the margin, if the securities appreciate in value, the borrower might be required to provide more collateral.

How it Works:

• The initial margin is typically 2-5% of the collateral value
• It creates a buffer against market price fluctuations
• It reduces counterparty risk for both parties
• It's a standard practice in repo markets to manage credit risk

Example:

If a borrower wants to borrow $100 million using $102 million worth of securities as collateral (2% initial margin), this margin protects both parties from small price movements in the collateral securities.

Therefore, the correct answer is C - both the cash lender and the cash borrower.