FCA Finalizes UK Short-Selling Overhaul With Anonymous Aggregate Disclosures

The Financial Conduct Authority published its final UK short-selling rule package on April 16, setting out how the post-EU regime will work from 13 July 2026. The policy statement keeps the core framework in place but changes several operational points that matter to firms active in UK equities.

The biggest change for market transparency is that the FCA will publish anonymous aggregate net short positions by company for positions reported at or above the 0.2% threshold. That replaces the old approach where individual position holders became publicly visible once they crossed 0.5%. The regulator also extended the reporting deadline for net short positions to 23:59 on T+1 and said market-maker exemptions will move to a single activity-based notification instead of instrument-by-instrument filings.

The final package also introduces a new reportable shares list, formalises five-year record-keeping for covering arrangements, and confirms that UK sovereign credit default swaps are outside the scope of position reporting and covering requirements.

Why it matters

For active traders, this is a market-structure change rather than a headline crackdown. Public short-interest signals will become less trader-specific, while reporting and exemption processes become more operationally efficient for firms. That could lower compliance friction without removing the FCA’s visibility into concentrated short activity.

What to watch next

Watch the 13 July 2026 phase-one start date and how firms adapt their reporting workflows. The second implementation phase, due on 30 November 2026, will add bulk position-submission functionality that may further reduce back-office friction.