PRTA Short Interest

Short InterestVery High
Short Interest?7.9M
Days to Cover?13.3
Avg Daily Volume597.8K
Settlement Date2026-10-15
Short Volume Ratio (30 Day)Avg: 6,653.0%
2026-09-152026-10-062026-10-26
Latest Short Vol Ratio7,016.0%
Short Volume207.7K
Total Volume296.1K
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Prothena (PRTA) — Short Interest