I had noticed a 2 big downtrend in the EUR/USD pair. On the first downtrend that i had noticed there is more or less a 150 pips down in the pair. I had noticed that from the 1.3820 asked price it moved to 1.36540 before reaching the resistance level. Meanwhile, after the opening of the New York exchange i had noticed a second downtrend even before then the first downtrend had reached a 38.2% fibonacci retracement level. From 1.36918 asked price it looses more or less 50 points up to 1.36423. My question is, what cause the 150 points downtrend of this week? And what cause the 50 points downtrend of the first hour of the New York trading? Does it have something to do with the expectation of the change in US interest rates?