On 7 May 2026, AIMA published guidance on new UK short selling regime. AIMA published guidance note related to the UK's new short selling regime. Follows April 2026 UK FCA issued final clearer and simpler short selling rules. Short Selling Regime Practical guidance on new UK short selling regime, which takes effect on Jul. 13,…
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U.S. – FINRA Short Selling Reporting Reforms
On 1 May 2026, FINRA proposed to reform Reg SHO, fail-to-deliver reports. FINRA proposed amendments to improve usefulness of short selling information reported to/published by FINRA and improve oversight of compliance with Reg SHO. Adopt FINRA Rule 4321 (Allocations of fail to deliver positions); amend FINRA Rule 4560 (Short Selling reporting). Follows FINRA Regulatory Notice…
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U.K. – FCA Confirms New Short Selling Regime
On 24 April 2026, UK FCA issued Handbook Notice 140 which also contains the Short Selling Rules Sourcebook Instrument 2026 (FCA 2026/16), first issued 16 April 2026. Background: From 13 July 2026, existing exemptions for market making in UK sovereign debt will no longer apply, but FCA's emergency powers will continue to cover these instruments.…
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Netherlands – AFM Issues Short Selling Fine to Arrowstreet Capital
On 20 April 2026, the Netherlands Authority for the Financial Markets (AFM) imposed an administrative fine of €297,000 on Arrowstreet Capital, Limited Partnership. Background: Arrowstreet acted in violation of short selling regulations between July 2020 and November 2024 Structurally underselling short positions reported and disclosed Failure to disclose short selling in a timely manner Arrowstreet…
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U. K. – FCA Issues Final Short Selling Rules
On 15 April 2026, the FCA published a Policy Statement (PS26/5) with final rules for short selling. These will create a new Sourcebook, within the FCA Handbook. The new short selling regime will apply from 13 July 2026. The final rules make changes in the following areas: UK sovereign debt and UK sovereign credit default…
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S Korea – FSS Published Results on Naked Short Selling Detection
On 30 March 2026, KRX published first-year results and future plans for NSDS. KRX will continue strengthening market oversight of illegal short selling using insights derived from NSDS operations. It will provide guidance to institutional investors based on cases identified through NSDS to help prevent recurrence. Efforts will be made to reduce unnecessary regulatory burden…
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