We can talk about all fundamental factors and how they can effect the bond prices and so on... But this monthly chart look like traditional Elliott wave pattern from the book. Now we see major impulse pattern have finished the 3 (blue) wave and shown first corrective wave. If the ECB will make unexpected moves it could force the last corrective wave down. There is support zone at the price 148.00 which is near Fibonacci retracement level 23.6% and price 135.00 near Fibonacci retracement level 50%.
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