stockmama,
Pull up a two or three year span chart of any of the major 3D space stocks, and take a good look at it. In particular, pull up 3DSystems' chart. There are always several periods of time in each one of these stock's history that would make a sane person become insane with all of the red.
It is the same for SGLB.
Actually, when I place 3D Systems' chart next to SGLB's chart, I am kind of amazed at the recent time period similarities. It makes me wonder if SGLB is in fact somewhat following the industry as a whole.
All the best,
Silversmith