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Julien Dayer

Associate

French English German Swiss German Spanish
Assistant : Rebecca Fernandez

EXPERTISE

Julien Dayer advises private and institutional clients on banking and financial law, with a particular focus on regulatory and contractual aspects relating to financial products and services.

His areas of expertise include asset management, collective investment schemes and bank insolvency.

EXPERIENCES

Since 2025 Associate at Borel & Barbey
2023 - 2025 Trainee lawyer at a law Firm in Geneva
2022 - 2023 Legal intern at the Swiss Financial Market Supervisory Authority FINMA

EDUCATION

2025 Geneva Bar
2023 Certificate of Advanced Studies in Legal Professions, University of Geneva
2022 Master of Law (MLaw), University of Fribourg
2020 Bachelor of Law (BLaw), University of Fribourg

MEMBERSHIPS

  • Geneva Bar Association (ODAGE)
  • Swiss Bar Association (FSA)

NEWS

Borel & Barbey advised Aria on the implementation of a factoring program for a leading Swiss company

6 November 2025
Borel & Barbey advised fintech company Aria on the contractual implementation of a factoring programme for a major Swiss company. With an instant API financing solution dedicated to B2B and...

Swiss Parliament adopts motion on dividend and executive pay rules for systemically important banks

18 September 2025
On 8 September 2025, after prior approval by the Council of States, the National Council of the Swiss Parliament approved a revised version of the Stark motion, a parliamentary motion...

Swiss Supreme Court Clarifies Self-Incrimination Protection in FINMA Proceedings

19 August 2025
The Federal Supreme Court’s decision (7B_45/2022) of 21 July 2025 marks a significant shift in how financial regulatory investigations intersect with criminal law. The ruling establishes clearer boundaries for evidence...

PUBLICATIONS

No Duty to Return Retrocessions in Execution-Only Banking Relationships

13 February 2026
Published today, the Swiss Federal Supreme Court’s decision of 12 January 2026 provides for a much-awaited clarification on the treatment of retrocessions in execution-only banking relationships. The Swiss Federal Court...

FINMA has published Guidance 01/2026 on the custody of crypto-based assets

13 January 2026
On 12 January 2026, FINMA published Guidance 01/2026 on the custody of crypto-based assets, setting out supervisory expectations aimed at strengthening client and investor protection in Switzerland’s growing crypto market....

The Swiss Federal Council launches a consultation aiming at advancing Swiss crypto and stablecoin regulation

27 October 2025
On 22 October 2025, the Swiss Federal Council (the “Federal Council”) launched a consultation on proposed amendments to the Financial Institutions Act (“FinIA”), targeting the regulation of stablecoins and crypto-asset...

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