Another month in 2014 has drawn to a close -- as has another week of horrendous performances by several health-care stocks. February is the shortest month of the year, but its final week proved to be quite a long one for some investors.

One of this week's big losers announced a secondary share offering that will lead to dilution of its stock. Another felt the brunt of allegations by a prominent short seller. And the third of our worst-performing companies did it the old-fashioned way -- by disappointing investors with its quarterly results.

Which companies made this week's list of horrendous health-care stocks? Find out by watching the following slideshow.