Short Interest in 3D Printing Sector Focused on One Name

Paul Ausick

We have tracked the key short interest changes as of October 15 in the following 3D printer and services companies: 3D Systems Inc. (NYSE: DDD), Stratasys Ltd. (NASDAQ: SSYS), The ExOne Co. (NASDAQ: XONE) and Proto Labs Inc. (NYSE: PRLB).

Germany’s Voxeljet A.G. (NYSE: VJET) held its initial public offering on October 17, and we will add it to short interest coverage in our next report. Voxeljet’s IPO was a huge success for the company. Shares went off at $13 and closed Thursday night at $33.75.

Short interest in 3D Systems rose 2.1% to 27.64 million shares. Some 28.9% of the company’s stock is short.

Short interest in Proto Labs decreased by 8.2% to 2.77 million shares, or 13.7% of the company’s float.

Stratasys saw short interest drop 8.9% in the first two weeks of October to 2.52 million shares, or about 7.8% of the company’s float.

Short interest in ExOne rose 11.8% to 3.63 million shares. About 35.6% of the company’s shares are now held short.

After piling on ExOne in mid-September, short sellers eased off on the company a bit. Still, it was the only one of the four to see double-digit rise in short interest in the two-week period ending October 15. The anticipation — and ultimate success — of Voxeljet’s IPO probably gets most of the blame, because the two companies focus primarily on the industrial and commercial markets for their products.