Short Interest
Tier 3 · Market Sentiment · 0.5× weightHow many people are actively betting this stock goes down?
Short interest as a percentage of float measures the proportion of available shares that have been sold short, representing aggregate bearish institutional positioning. Elevated short interest can signal informed skepticism from sophisticated market participants, or conversely, a technical setup for short squeeze dynamics. Classified as a Tier 3 sentiment modifier rather than a primary fundamental signal.
High short interest means sophisticated market participants are willing to pay a borrow cost to bet against a stock. That's a deliberate, expensive decision — worth factoring in. It also creates asymmetric risk: high short interest can accelerate declines or trigger violent reversals.
Universal thresholds apply across all sectors. Short interest is a positioning signal that doesn't require sector-specific calibration — the psychology of bearish conviction works the same way regardless of industry.
Very low short interest — minimal bearish institutional positioning
Moderate short interest — some bearish conviction present
Elevated short interest above danger zone threshold