Implications of Low Short Interest in the S&P 500

Short interest remains low relative to historical norms over the past 10–15 years. The median short interest for S&P 500 stocks is around 1.6%–2.4% of float or market cap as of late 2025/early 2026, depending on the measure, median stock ~1.6% per Nasdaq data; higher aggregates ~2.4%–2.7% in some reports. This is near decade lows,

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