Zai Lab Limited (ZLAB) short interest & options flow
NASDAQZai Lab heads into September with a curious split: short sellers are rebuilding positions at the fastest pace in months, yet options traders have abruptly abandoned the defensiveness that defined the past two months. The most striking move this week is in options. Zai Lab's put/call ratio has collapsed to 1.96 — nearly two standard deviations below its 20-day average of 3.74…
ZLAB cost to borrow surges 337% in one week to 2.79%, signaling tightening supply as shorts face rising borrowing costs.
- Market cap
- $3.16B
- Next earnings
- 25 Mar 2027
Key data as of 8 Nov 2026

Latest signals on ZLAB
- Cost to Borrow
ZLAB cost to borrow surges 337% in one week to 2.79%, signaling tightening supply as shorts face rising borrowing costs.
ZLAB news and analysis
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