I did mention yesterday looking at the massive down sell volume that 16.5c low may be the lowest you can get on the retrace.
Also from my quantitative analysis, MBE's Fib retracement ratio is around 33% for all rises and falls over the last 3 months. Yesterdays retrace on volume was around 31%.
A low Fib retracement ratio indicates bullishness for the stock.
Check it out from MBEs price history.