The EU Short Selling Regulation (SSR) introduced a private and public notification regime for investors who hold net short positions in certain financial instruments. We explain notifications and disclosures below.
End of the transition period
The EU SSR[1] and the Level 2 regulation (regulation EU 918/2012[2]) were converted into domestic law as amended by the Short Selling (Amendment) (EU Exit) Regulations 2018[3] following the end of the transition period.
The Binding Technical Standards, adopted under the EU SSR as at the end of the transition period, have also been converted into UK law and apply as amended by the Technical Standards (Short Selling) (EU Exit) Instrument 2019[4].
ESMA Guidelines adopted under the SSR have not been incorporated into UK law.
ESMA Guidelines[5] and Q&A documents[6] adopted under the SSR, should be treated in line with our general approach to EU non-legislative materials[7]. Generally, firms should continue to follow and have regard to such materials to the extent they are relevant under UK SSR.
We published our Primary Market Bulletin 21[8], 24[9] and 32[10] in which we inform market makers of changes to the regulatory obligations under UK SSR. PMB 21 and 32 are particularly important for firms using the market-maker exemption under the SSR, as they explain the key conditions for the exemption and equivalence of EEA regimes.
Under the UK SSR, you may have to notify us of positions that are private or are to be disclosed publicly.
See the public short positions disclosed to us – daily update (XLSX)[11].
28 November 2025 update
Short Selling Regulations 2025 - Consultation paper publication and industry event
As explained in Primary Market Bulletin 59[12] and Primary Market Bulletin 60[13], we have now published our Consultation Paper (CP25/29)[14] setting out proposals to implement the Treasury’s changes to the UK Short Selling regime introduced by the UK Short Selling Regulations 2025.
These proposals cover the disclosure of aggregated positions, reporting of net short positions, relevant exemptions, and our emergency powers.
We encourage investment firms, issuers and other market participants to read the Consultation Paper and submit their views before the end of the consultation period on 16 December 2025.
We hosted an in-person event on 6 November 2025 where we provided an overview of the proposed policy and operational changes to be introduced to the short selling regime. We've updated our consultation paper page[14] with the implementation timings and information for firms on aggregated net short positions, including the anonymisation of position holders, alongside the new reportable shares list. This also includes a derivation and changes table to accompany the Consultation Paper, which details how we have proposed to transfer rules and guidance from the current regime.
We plan to implement the new regime next year once we have finalised the new rules and have allowed time for the FCA and firms to make any technical and operational changes. This includes the new requirement to publish aggregated net short positions by issuer.
In the interim, the existing UK short selling regime will continue to apply, including the current public disclosure of individual firms' net short positions in issuers at the 0.5% threshold and above.
Register to submit a notification
To be able to submit a short selling notification to us on behalf of a position holder (whether a firm or an individual), the person making the notification (the reporting person) must be registered with us through our Electronic Submission System (ESS).
If you are making notifications for yourself as an individual reporting person, you will still need to be registered as a reporting person beforehand.
You will not be able to send any notifications until we have accepted your registration.
Firstly, you will need to create a personal ESS account[15] before you are able to submit a SSR registration form.
Once your account has been approved, you will need to submit one of the following Position Holder registration types:
- Registration for New Position Holder Firm – This registration type is to register yourself as a reporting person for a firm that has not been registered before.
- Registration for Existing Position Holder – This registration type is to register yourself as a reporting person for a firm/individual that is already registered.
- Registration for New Position Holder Individual – This registration type is to register yourself as a position holder individual or for an individual that has not been registered before.
For all the above registration types, you will need to upload an authorisation letter on the ESS portal. The authorisation letter should be on your company letterhead and state which individuals have permission to submit notifications on behalf of the firm/individual. This should be signed by an individual who has the authority to give this level of permission.
For registering a New Position Holder Firm, a certificate of incorporation of the firm will be required.
For registering a New Individual Position Holder, you must provide a copy of the position holder’s driving licence or passport.
Once we have accepted your registration we'll send you an acceptance email in addition to giving you permission to make SSR notification submissions on ESS.
If there is more than one reporting person for a position holder, each reporting person must complete the registration process.
This is detailed in section 5 of our ESS user guide[16].
UK sovereign debt thresholds
For thresholds regarding UK sovereign debt and uncovered positions in UK sovereign CDS, see the table below, which we update on a quarterly basis.
Notification thresholds for net short positions on UK sovereign debt – valid as of 15 October 2025
| Sovereign issuer | Amount of outstanding UK debt (in million €) - Duration adjusted | Initial threshold | Incremental level | ||
|---|---|---|---|---|---|
| in % | in million € | in % | in million € | ||
| United Kingdom | 29,247,016.79 | 0.50% | 146,235.08 | 0.25% | 73,117.54 |
How to make a notification
You must send your notification to us through our Electronic Submission System, following the registration of reporting persons and position holders.
You should send your positions by 3.30pm on the trading day after the day the position was reached. All calculations should be made as at midnight on the trading day the position was reached.
Correct or delete an incorrect notification
When you submit a net short position notification, you will see a position ID in your ESS portal. There is a unique ID for every position submitted to us.
If you need to correct or delete a notification, you must submit a Net Short Position Share Notification – Correct, and reference the position ID of the notification that you wish to correct.
If the position is completely incorrect and you wish to delete it you will need to submit a Net Short Position Share Notification – Delete, and reference the position ID of the notification you wish to delete.
Do not use the notifications types above (for correcting or deleting a notification) to report a movement of a position, or the closing out of a position. Use these notification types only when you have given us incorrect information in a notification.
Please follow the above steps if you wish to correct or delete a previous notification sent to us in UK sovereign debt or in uncovered UK sovereign credit default swaps (CDS).
Notes for using the forms on ESS
You must provide all the mandatory information (highlighted by a red asterisk) to complete the forms on ESS.
The ISIN code of the stock must be provided in the correct format (12 alphanumeric characters) and a percentage position must always be completed to 2 decimal places.
No ISIN code is required for reporting net short positions in UK sovereign debt and in uncovered UK sovereign CDS.
Exemptions from the UK SSR
Market makers and authorised primary dealers with an exemption under the SSR may not have to comply with these obligations when undertaking market-making activities in the financial instruments their exemption[22] applies to.
See our list of market makers and authorised primary dealers[23].
Request for guidance
You can request guidance in writing and on a named basis only.
We expect you to have considered the query before writing to us, and we may reject any queries that we don’t consider are seeking guidance.
Email queries to [email protected], with the subject line ‘Request for guidance: SSR’.
