Calculators
Initial margin calculators
Portfolio Options initial margin calculator
The JSE uses a portfolio margining process to calculate initial margin requirements. This process reduces the initial margin required by recognizing that offsetting positions can provide a reduction in risk. Therefore portfolio margins are usually less than the sum of the individual margin requirements. This calculator includes margin offsets and will provide you with a reasonably accurate estimation of the required initial margin in a portfolio context.
Generic Options initial margin calculator
This is a web-based application that will help to calculate the margin on a single futures or options position.
The instruments listed on the JSE’s Equity Derivatives market expire on a quarterly basis at a futures closeout. The valuations used for the expiries are an arithmetic average price taken over 100 minutes. Please click the above link to see past closeouts average prices.
For any queries/information about the JSE's Equity Options Market please contact James Boardman +27 11 520 7051.