Wyckoff trading method, page-208

Actually the next two bar were also weak for sure, the third not so much...50/50.....perhaps an attempt to hold the market up......
The time frame is daily, and the volume on that bar is the highest on the chart (and since the 27the April 2015).
So there was quite a bit of 'information on that bar......more than any other individual bar that shows on that chart......and it should be enough to make you sit up and pay attention......or switch your trading radar 'on'.

I don't know if there was an announcement on this day, and the demand it generated was sold into..... or whether it was a synthetic pump and dump bar.
But either way, it was full of selling, and was a sign of weakness (TG just warned of "Supply Coming In).
It also needs to be remembered that that weakness now (still) remains in the background of the chart, and it is continuing to cast its shadow of weakness over the chart even now.
And it won't go away......until either some serious distance is put between that bar and the current trading (much more than now....) or otherwise the chart needs a serious sign of strength to arrive, which will switch the sentiment on the chart to strength.

cheers