Diamond Offshore has done nearly as badly. Similarly exposed to the commodity complex, that energy equipment name has been beleaguered by an oversupply of oil rigs and falling oil prices.
"It's a tough time for DO [Diamond Offshore] and its peers," said Michael LaMotte, analyst at Guggenheim Securities. "With demand likely even weaker now, the excess capacity in the market is exacerbated, which creates even greater utilization and pricing risk—especially for older rigs like those in DO's fleet."
In a similar space, offshore driller Seadrill saw a comparable increase in short activity over the two-week period. And troubled teen retail company Abercrombie & Fitch, which already had relatively high short interest, saw more bears pile in.
Rounding out the list are so-called cult stocks GoPro and SolarCity, two speculative companies in which investors have sniffed out attractive long-term prospects. Both have suffered a decline in market sentiment lately, with SolarCity sliding 10 percent on the year, and GoPro down 45 percent in the past month alone.