It has just hit R1. If it break through then it is heading towards R2 around 25.4. Good point to lock some profit. Based on the RSI and MACD, weekly trend is still bullish indicating high probability that it will head towards R2 (25.4+$).
Daily chart is also showing bullish movement.
If it breaks through the resistant point of 18.41, it will head towards the next resistance point of 21$. Opportunity to book some profits between 20 & 21$. If it breaks through 21$, you can expect it to head towards the next resistance level