Median short interest in the S&P 500 is up to ~3.7% of total shares outstanding, the highest level in 11 YEARS.

The Nasdaq 100 is at ~2.7%, the highest in 6 years, while the Russell 2000 is at ~5.0%, the highest in over 15 years.

All three indexes have seen short interest rise sharply since mid-2024, accelerating further in 2026.

The last time short interest was this elevated across all three indexes simultaneously was during the 2010-2011 European debt crisis.

The fuel for a short-squeeze has rarely been higher.