PRTA Short Interest

Short InterestVery High
Short Interest?8.5M
Days to Cover?26.5
Avg Daily Volume322.0K
Settlement Date2026-09-15
Short Volume Ratio (30 Day)Avg: 6,576.0%
2026-08-252026-09-162026-10-06
Latest Short Vol Ratio6,803.0%
Short Volume111.8K
Total Volume164.4K
Prothena (PRTA) โ€” Short Interest