Obsidian Therapeutics, Inc.
NASDAQOBX short interest plummets 29% in one day to 1.17M shares, marking sharpest single-session drop in weeks as availability surges to 132%, easing borrow pressure.
OBX short interest has exploded 885% in a single week. The borrow market is now virtually shut. Shares short in Obsidian Therapeutics jumped from roughly 149,000 to 1.47 million between September 11 and September 21.…
OBX enters the final days of August with a striking divergence: the borrow market has gone from wide open to nearly locked shut in the span of two weeks, even as the stock itself tumbled 18% on the week. The borrow…
Snapshot as of 14 Oct 2026
OBX has gone from a year-to-date standout to the week's most dramatic reversal in biotech — down 35% in five sessions after a 2026 run that had briefly taken it up more than 340%. The borrow market tells a story of…
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