OSRH stock jumped 52.8% on April 30. Now the lending market is repricing fast.
Cost to borrow doubled in one week. Availability has collapsed. The signals are converging on a single theme: shorts are squeezed.
Cost to borrow hit 43.2% on April 30. That's up 107% in seven days. A week ago it sat at 20.8%.
Availability has tightened sharply alongside it. The lending pool is now 93% drawn down — availability stands at roughly 7%, meaning fewer than one share remains for every 13 already borrowed. That's close to the 52-week peak, when every share in the pool was lent out.
The timing is notable. CTB had been falling steadily since late March, when it peaked near 32.5%. It dropped as low as 20.8% through mid-April. Then the stock moved — and lenders repriced overnight.
At 1.72% of free float, short interest itself is not the story here. The position is small. But it moved. Short interest rose 8.3% in a single day on April 29, reversing a week-long decline. Over one month, it's down 45%.
That one-day rebuild — right as the stock surged — matters. New shorts entered at elevated prices, and they're now paying a 43% annual borrow rate to hold.
OSRH reports earnings on May 7. That's six days away.
Past earnings prints have been volatile. The March 2026 event produced a +10.9% move. The August 2025 print swung +74% over five days. The November 2025 report dropped 14.1% on the day.
Earnings volatility history, a collapsing borrow pool, and a doubling CTB create a pressurised setup heading into next week.
See the live data behind this article on ORTEX.
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