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Timeline for EPE for interest rate swap

Current License: CC BY-SA 4.0

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May 12, 2021 at 11:45 comment added Johhn White So for each path and each time step I have to discount all future cash flows to that time and then If I want to calculate EPE for a given time step I have to calculate average of positive parts over all trajectories? In this case I dont see what is the role of LSM. At maturity $T$ EPE is just an average of all positive cash flows at this time or just zero? I.e we calculate exposure immidiately after payment at a given time or before this payment so we should include it in our calculations?
May 12, 2021 at 8:55 history answered Felix CC BY-SA 4.0