Learn

Plain-English guides to the data on this site. Educational only; nothing here is investment advice.

• What is short interest?

  Short selling and short interest from first principles: what a net short position actually is.

• The FCA's ANSP, explained

  What the daily aggregate net short position number includes, what it excludes, and how to read it.

• How UK short disclosure changed in 2026

  The end of named positions: what the old register showed, what replaced it, and why.

• Australia's short position data, explained

  ASIC's daily aggregated reports: who reports, the T+4 delay, and how the numbers differ from the UK's.

• How to read the data on this site

  League table, movers, company charts, revised figures: a tour of every number we show.

• Short squeeze basics

  The mechanics behind squeezes, and why high short interest alone doesn't predict one.