Not unusual for that stock, in April BSTE went from $45 to $37 in two days, a month later in May it went from just under $52 to to $43 in three four days and this time from around $56 to $45 in about four days. I would not be surprised if it dropped to $41.5 short term if the market in general is weak early in the week, but I still have $14 to recover form it, so I'll ty and play it "carefully". It could easily break down completely and go all the way to $30 mind you, so only the very nimble should be playing this one. You should note that money flow has deteriorated through the last advance to a new all time high close to $58, such a divergence is a dangerous medium and long term warning signal. If you like it and want to play it, I would wait for an extreme in the RSI or at least a turn in the direction. Since my general market view is quite negative right now, I would recommend standing aside and waiting at least till $35 is tested successfully maybe even a retreat to $30.