ALGN has been going up very quickly and very drastically over the past several months. Those who bought this stock a while ago have made a lot, but a crash is on its way. Over the past few weeks, both a head and shoulders pattern and a clear RSI divergence are visible in the stock, yet it continues to surge upwards. Why? Because the RSI is approaching overbought conditions again with each passing day. By the end of the year, a huge crash is imminent. These kinds of patterns and divergences do not just "happen". Share your ideas below.