I found this in french language please can you help to undersand We present you 2 diagrams that illustrate the spreads tonight between the even Eur Usd and Gpb Usd and Eur Usd and Jpy Usd at 22 o'clock On the Usd Eur quoted 1.3018 We would have a Jpy Usd quoted in the Eur basis Usd 1.2932 the difference is therefore of 86 pips On the Usd Jpy quoted 104.37 We would have an Eur Usd quoted in the Jpy basis Usd 103.32 the difference is therefore of 105 pips On the Usd Eur quoted 1.3018 We would have a Gpb Usd quoted in the Eur basis Usd 1.3118 the difference is therefore of 100 pips On the Usd Gpb quoted 1.8966 We would have an Eur Usd quoted in the Gpb basis Usd 1.8848 the difference is therefore of 118 pips In some days these differences can come back or even to zero to reverse itself/themselves. Some shrewd kids must conduct this type of arbitration systematically without big risks http://www.hyper-forex.com/forum/read.php?f=1&i=171&t=170
'verry' good strange arbitrage strategy 'verry' good If you care to read the further posts in the given forum url, you will find out that many posters question this. Further, the calculation seems to be very obscure. Several forum posters pointed this out. It seems that the whole thing is a plug for a commercial training outfit. nononsense
The idea described is called triangular arbitrage, where you use 2 pairs and a cross rate between the two currencies in the pairs. For example, EUR/USD, JPY/USD and EUR/JPY. You can calculate the implied EUR/JPY cross-rate from the other two pairs and then compare it to the actual EUR/JPY rate. If there's disparity then there is a arbitrage profit to be made. The same principle applies to 4-way arbitrage. I doubt it is a viable strategy as it the most basic relationship in FX market, which means that it holds all the time.