Take a look at what the insiders have done all year. They have sold virtually all their exercised options. I understand selling some for taxes but 100%?!?!? I sold at 72 and watched it hit 80 and was sick as I had those shares for over a year, now, I'm glad I got out. The sales/rev miss in the last Q hasn't helped then add in how many people are exiting their winners to avoid higher taxes next year on cap gains.
I probably would've sold at that level too, but conversely...why wouldn't you want to buy when the stock is low? Looking back on the chart over the last 5 years, anyone buying when the stock price dips well below the 200-day MA and held has done remarkably well. This stock price is too cheap.
Why is it troubling? Are you upset since the stock price doesn't rise every day? I'm sure not, as this dip gives me the chance to buy in. Teradata is one of the top names in Big Data, the industry is projected to grow steadily for the long term, has great management, etc...and short-term trading weakness has you troubled? Oh well, wait until it hits $80 to buy if it makes you feel better - I don't care.