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 open-discussion General Discussion 2 12 2015-06-07 02:49 No Moderation
 help Get Public Help 70 248 2017-01-23 13:20 Anonymous & Non Project Users
 developers Project Developer Discussion 1 1 2008-12-09 08:13 No Moderation
 preliminary-release-0.3 Blotter provides transaction infrastructure for defining instruments, transactions, portfolios and accounts for trading systems and simulation. Eventually, it will provide portfolio support for multi-asset class and multi-currency portfolios - but first things first. This version of blotter serves only as a proof-of-concept for P&L calculation on a set of trades in a portfolio of several instruments. This 0.3 release is carefully scoped to remain simple and understandable. As a prototype, this version works under the following assumptions: * The instrument has a contract multiplier of 1, such as a stock * Uses average cost accounting to calculate P&L. The model can be extended to FIFO if tax efficiency or other conditions are important, but FIFO is considered out of scope for this release. * The code is unaware of the instrument being used, and will be extended to accommodate an architecture for including contract specifications. * The code does not test for short covering or long sales that would take the resulting position through zero (from a positive position to a negative position or vice versa). Such transactions will result in incorrect realized gains or losses. We need to add a test and decide whether to break the trade up. * No multi-currency support. This is also better done through an instrument class. * One trade per day. Extending to support multiple trades per day is likely in the next release, see comments in updateEq(). * No margin support. Again, this will be instrument specific. The model presented here, however, is extensible to cover the limitations of this release. 0 0 1970-01-01 00:00 No Moderation
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