Abstract: A computer network and method for electronically trading combinations of derivatives. One preferred method of trading includes providing quotes information to a central server, and determining indicative quotes for combination trades, and providing the non-binding, indicative quotes to market participants (which typically includes subscribers, but may also include market makers). A participant may then submit an e-RFQ, which is a request for a binding quote for the combination of derivatives. Market Makers may then elect to submit a binding quote for the corresponding derivative combination. Market participants may then elect to enter a binding order.

Abstract: Methods, systems and apparatuses are described for calculating a performance bond amount for a portfolio including interest rate swaps. A risk calculation module (or risk processor) may assist in the calculation. In some examples, values, such as swap (DV01) dollar values and volatility values, and adjustments/factors, such as calendar charge adjustments and liquidity charge minimums, may be used to enhance the margin calculation. These values may be maintained and updated in various ways, including but not limited to, lookup tables, matrices, and other structures. The margin calculations may be used by an exchange or clearinghouse to request a portfolio holder to deposit additional funds towards a performance bond associated with the portfolio.