Well, that move down from 22.08 this morning was very characteristic of a W2 correction. If it unfolds in an ABC Wave 2 pattern, which it looks like at the moment, then we should see us move up to 21.72, 21.80, or 21.93. After that, we should go down to finish the Wave 2 at either 21.21, 21.00, or 20.70. The 20.70 price being the most likely (and a remote possibility that we go back to 20.33, but I really don't see that happening).
On the 5 d intraday chart, there is an open gap at 20.36. On the 3 mo d chart, SLW has a bullish 13/34 EMA crossover. According to this crossover, SLW is now in an uptrend; however, it must remain above the 13 & 34 EMAs. If SLW falls below these EMAs, there is a strong chance the gap will fill. GL
I'm calling this Wave 2. We have hit the minimum retrace point at 21.20 / 21.21. IF that is the bottom of Wave 2, then we can head up now. Otherwise, we go down to the aforementioned (listed above W2) price points.
In either case, the Wave 3 up price points can now be ascertained. Wave 3 up will most likely be 24.92 with a probable / possible pause at 23.83. There are potential price extensions beyond 24.92, but won't list them unless others are interested. GLTA.
I watch minute-to-minute, with the intent of using limit orders close to these pivot points, but as shown above, there are usually multiple pivot points and so also look at volume, RSI, and MACD. Then create smaller charts which usually confirm the larger. Unfortunately, this is not an exact science, but a balance of art / gut and charts.