Distinguishing CCP, OTC, TIMS, and SPAN Margin Methods

Summary

The document is a request for learning resources on TIMS and SPAN, methodologies used to calculate margin. The response points out that margin is not a single uniform topic and asks the learner to distinguish between margin for centrally cleared products and margin for over-the-counter products. It identifies CCP margin as specific to the clearing house and notes ISDA SIMM as a model governing OTC product margin.

This distinction helps scope further study: TIMS and SPAN should be understood in the context of the relevant clearing and product framework, while OTC margin has a different model and governance setting. The exchange does not provide a textbook recommendation, explain the calculations, or compare TIMS with SPAN. It also gives no examples or empirical evidence, so it serves as a brief orientation to categories of margin rather than a technical guide to implementing or evaluating a methodology.

Key ideas

• Margin methods depend on whether products are centrally cleared or traded over the counter.
• CCP margin frameworks are specific to individual clearing houses.
• The response identifies ISDA SIMM as a model for OTC product margin.
• The document does not explain TIMS or SPAN calculations or recommend further textbooks.

Tags

# Textbook about methodologies for computing margins (TIMS and SPAN)


# Textbook about methodologies for computing margins (TIMS and SPAN)












I'm reading and trying to understand TIMS and SPAN methodologies for margin calculations. In the internet I found these 2 great resources and that's what I'm using to get familiar with things:

- TIMS

- SPAN

I would like to know if there are any academic textbooks that dedicate a section or the entirety of such book to these topics. Or if there are other good materials out there, I know this search on google returns some results, but I believe the resources in the link are by far the best I've encountered so far and I'm not sure if that's all there is.

Thanks for any help in advance!

## Answer by danp (score 2)

https://quant.stackexchange.com/a/55749

There are many margins, you have to be more specific. Are you interested in CCP (Counterparty Clearing House) margin, OTC products margin? The former are CCP-specific, and the latter are governed by the SIMM ISDA model.

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