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Tales from a Trading Desk Blog Header


FX Forwards PV cashflow in CouchDB

Fri, 24 Feb 2012 13:37:26 GMT

 {     "tradeId": 1003,     "trader": "Terry Trader",     "desk": "FX Desk",     "region": "London",     "notional": 100,     "rate": 1.58,     "side": "Buy",     "assetClass": "FX",     "instrument": "Forward",     "duration": "6M",     "ccyPair": "GBPUSD",     "yieldCurve": "http:\\\\localhost:8001\\yieldCurve\\GBP\\20100101",     "GBPcashflow": [-98.54],     "USDcashflow": [154.22] } 

With an enhanced map:

 function(doc) {   if (doc.instrument == "Swap") {     emit(doc.tradeId, sum(doc.fixedLegPVCashflows)+sum(doc.floatingLegPVCashflows));   } else if (doc.assetClass == "FX") {     emit(doc.tradeId, sum(doc.GBPcashflow)+sum(doc.USDcashflow));   } } 

So the above is still fairly simple, and probably not relevant in business – i.e. the sum of total NPV for two instruments. What might be more interesting is the total PV for 6M (6 months). Which possibly highlights the document structure issues around how we hold the Swap cashflow’s.

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