Opzioni binarie che cosa sono
Banks (and retail investors) both utilise leverage to make big gains from such moves. The truth is that the volumes are huge (4 trillion USD daily). There are a lot of traders, market makers and stakeholders in these markets, but that example is to show you how FX works, and this is fundamental when analysing support and resistance (SR) levels and trends.
They also hold really well because retail investors spot them and use too. We then see a short-term channel where the price is stuck for a bit accumulating strength.