Short interest exploded in micro-cap names this week. La Rosa Holdings saw its SI % of Free Float leap from 20% to 80.7% in just seven days. Interactive Strength matched the move — rising from 16% to 76.6% over the same period. Both now carry punishing borrow costs: LRHC at 300% APR and TRNR at 77%.
Rubico Inc. tops the cost-to-borrow table at a staggering 676% APR — a clear signal of extreme shorting pressure on limited float. Its SI hit 57% this week, up from 13%.
Among social-media favourites, SoundHound AI remains heavily shorted at 38.2% of free float, though bears trimmed slightly — down 1 point on the week. Cost to borrow stands at 24% APR. BigBear.ai holds near 29.3% with little change.
GameStop sits at — quietly creeping up 0.6 points week-on-week. Borrow costs are low at 0.65%, suggesting shorts are comfortable holding their positions.
On the large-cap side, Cognizant and MP Materials both saw meaningful SI increases — up 1.5 and 1.3 points respectively. MARA Holdings was a rare decliner among crypto plays, shedding 0.8 points to sit at 25.3%.
Data as of 21 May 2026. Not financial advice.
ORTEX Market Intelligence content is generated by AI from a snapshot of ORTEX's proprietary data. Content is informational only and does not constitute investment advice.
