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These resistances are identified respectively as the 23.6 percent and the 38.2 percent Fibonacci retracements on the downtrend from the July 13 high of $4.51-3/4 to the July 19 low of $4.16-1/4.
The trend could be divided into five small waves, with the fourth wave labelled 4 having peaked around $4.29-3/4, the 38.2 percent level. Wave theory suggests this peak could be approached.