Cost to borrow on UBXG hit 90% this week. That's a fivefold jump in seven days — and it's happening as the stock loses half its value.
Cost to borrow stood at 16.3% last week. As of May 12, it sits at 89.99% — a 457% rise in five trading sessions.
For context: CTB was running around 10–11% for most of April. The move to 90% is not a drift. It's a step-change that signals intense new demand for borrows against a fixed lending pool.
Availability has tightened sharply alongside it. On May 11, availability hit its 52-week floor as every share in the lending pool was spoken for. It has eased slightly to 62% of outstanding borrows as of May 12 — but the CTB level tells you the pool itself is still extremely constrained.
Shares short have risen nearly 380% in one week — from roughly 65,000 to over 310,000. SI as a percentage of free float crossed 1% on May 12, reaching 1.03%.
The climb has been relentless. Shares short were 37,000 at end-April. By May 6 they had barely moved. Then the acceleration began: 169,000 by May 7, 188,000 on May 8, 253,000 on May 11, 310,000 on May 12.
That is a near-vertical build. And it is coinciding directly with the CTB explosion — the lending market simply cannot keep up with the demand to borrow.
UBXG has fallen 29.5% in one day, 47% in one week, and 80% in one month. The stock trades at $0.21.
Every recent earnings print has been punishing. The April 2026 event saw a 22% one-day drop and a 40% five-day decline. The January 2026 event produced a 7% one-day move. The pattern of negative post-earnings reaction is consistent.
Next earnings is flagged for June 18, 2026.
What to watch: whether the borrow pool tightens again toward zero availability as the June earnings date approaches, and whether CTB holds above 50% or continues rising.
See the live data behind this article on ORTEX.
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