Find the loan on a long stock position and the share price that would hit the maintenance-margin line.
| Loan | – |
| Call price | – |
Use this margin-call calculator for a brokerage margin account, not futures initial margin. Equity cannot exceed the position’s value (that would mean no loan). Maintenance must be under 100%.
Loan = shares × price − your equity. Call price = loan ÷ ((1 − maintenance%) × shares). Below that price the house wants more cash or will sell. Type 30 for 30% maintenance.
Price: Current price per share.
Shares: How many shares you hold long.
Equity: Your own money in the position today (value minus what you borrowed).
Maintenance (%): The broker’s maintenance margin as a percent, e.g. 30 for 30%.
Loan: Amount borrowed against the position.
Call price: Share price at which equity would equal the maintenance requirement.
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