From lows of 6.23 back in June '16 ... BB has run 133% ... topping out at 14.55 in Jan '18. Since then it has been in consolidation mode and constructing a bullish falling wedge and retraced all the way to .618 on the Fib. This is a bullish consolidation imo for the start of a new uptrend in this name.
This is a cause for concern if you're long WDC. Had a very nice breakout of consolidation just to get right back into it. Now sitting on support of lower side of flag but also has a bearish 21/50ma cross and below its 200ma on weekly chart. Risk/reward not in favor of bulls imo.