only one reason for this, imo
the ipo sellers are shorting from other accounts while they sell the ipo shares. always a crushing in the a.m then up in pm for the same the next day .. it's really hard to stay in the stock like this ..but one day they'll just stop doing it and it's just going to take off. the good of this is that they do it in a range of price from 30-33..or so why ? they don't want to break the stock since they have 2/3 left ..
all my own opinion