The margin requirements for Money Market Funds (MMFs) vary depending on how long you have held the funds. Here's a comprehensive breakdown:
- Initial 30-day period:
- 100% initial margin requirement starting the date the Money Market shares are opened
- MMFs can be used to meet margin requirements but cannot be used to extend credit
- Cannot borrow against MMFs (no debit balance allowed)
- If MMF shares are transferred into IBKR the margin is 100% until IBKR recieves the acquisition date electronically from the sending Broker
- After 30 days:
- Margin requirement reduces significantly
- Initial margin in a Margin account: 1% of Net Asset Value
- Maintenance margin in a Margin account: 1% of Net Asset Value
Note
- There are slight discrepancies between the two sources regarding the margin requirement after 30 days (5% vs. 1%). For the most up-to-date and accurate information, we recommend visiting the IBKR Mutual Fund Margin web page.
- These requirements ensure that investors maintain adequate collateral while also providing flexibility after the initial holding period.