ABC ARBITRAGE
ABC ARBITRAGE is a French public limited company (société anonyme à conseil d’administration) registered in France under SIREN 400 343 182 (SIRET 400 343 182 00053), with its registered office at 18 Rue du Quatre Septembre, 75002 Paris. Incorporated on 15 March 1995, the company’s INPI registry record shows an active status for this head-office establishment.
ABC ARBITRAGE is the listed parent entity of the ABC arbitrage group, a proprietary trading and asset-management business specialising in arbitrage strategies on major European and American financial markets. The group takes positions predominantly in equities and equity derivatives — including share-subscription warrants, guaranteed-value certificates and convertible bonds — seeking to exploit temporary, unjustified price differences between convergent financial instruments. Trading and asset-management activity is carried out mainly through its subsidiary ABC arbitrage Asset Management, which manages third-party assets alongside the group’s own capital; assets under management stood at approximately €245 million as of 1 March 2026.
ABC ARBITRAGE shares are listed on Euronext Paris, Compartment B, under ISIN FR0004040608 and ticker ABCA, with 59,789,162 ordinary shares outstanding as of September 2026.
For the financial year ended 31 December 2025, the ABC arbitrage group reported consolidated net income of €25.1 million and a “product of current activity” (PAC, the group’s core trading-revenue indicator) of €59.7 million, up more than 15% year-on-year, according to the group’s annual results announcement of 24 March 2026. These are consolidated group figures; they should not be read as the standalone results of the ABC ARBITRAGE parent company alone, whose separately filed company-level accounts for the year ended 31 December 2024 reported turnover of approximately €1.83 million.
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Shareholders
5
Shareholders of ABC ARBITRAGE
According to ABC ARBITRAGE’s own capital-information disclosure, current as of 24 March 2026, ownership of the company’s 59,789,162 shares is distributed among a small number of named holders plus a majority free float. Financière WDD, a holding company that is 50.01% owned by Dominique Ceolin (the company’s Chairman and Chief Executive Officer), holds 11.95% of the capital. Aubépar Industries SE holds 11.93%. David Hoey, a board member, holds 5.85% directly. Eximium holds 5.06%, having declared a downward crossing below the 5% legal threshold on 30 May 2025 while stating its intention to remain above that level (disclosure referencing an Autorité des Marchés Financiers notification). Dominique Ceolin holds a further 4.44% directly. Other Group operations managers and heads of department collectively hold 6.23%. The remaining shares are held as free float (54.26%) or as treasury shares (0.29%). As a listed company, this disclosure covers major, reportable holdings rather than a complete register of every individual shareholder.
Data availability
Disclosure is categorised as major shareholders only. Based on the disclosed holdings, no individual shareholder or calculated ownership chain reaches the 25% threshold used under French anti-money-laundering rules to identify a beneficial owner: Dominique Ceolin’s combined direct and indirect interest totals approximately 10.4% of capital, combining his 4.44% direct holding with an effective 5.98% calculated from his 50.01% stake in Financière WDD’s 11.95% holding (50.01% x 11.95%). No ultimate beneficial owner is therefore identified from the available information. Data is current as of 24 March 2026 per the company’s own investor-relations disclosure.
Sources
ABC arbitrage, “Information sur le capital” (Capital information), abc-arbitrage.com, updated 24 March 2026, retrieved 18 September 2026. Regulated-information disclosure referencing Eximium’s threshold crossing of 30 May 2025, retrieved 18 September 2026.
Registry feed — rows exactly as filed with INPI (Institut National de la Propriété Industrielle), including entries the profile above does not cover.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA International Core Equity Portfolio | 10.4% | INPI (Institut National de la Propriété Industrielle) | |
| iShares Core MSCI Total International Stock ETF | 7.9% | INPI (Institut National de la Propriété Industrielle) | |
| iShares MSCI EAFE Small Cap ETF | 5.4% | INPI (Institut National de la Propriété Industrielle) | |
| SSgA SPDR ETFS Europe I-SPDR MSCI ACWI IMI UCITS ETF | 1% | INPI (Institut National de la Propriété Industrielle) | |
| Dimensional ETF Tr-Dimensional World ex U.S. Core Equity 2 ETF | 0.9% | INPI (Institut National de la Propriété Industrielle) |
Officers
36
Directors and officers of ABC ARBITRAGE
ABC ARBITRAGE’s board of directors comprised five members as of the company’s most recent governance disclosure (abc-arbitrage.com, retrieved 18 September 2026): Dominique Ceolin (Chairman of the Board, last re-appointed 9 June 2023), Xavier Chauderlot (permanent representative of director Aubépar Industries SE, last appointed 7 June 2024), Sophie Guieysse (independent director, last appointed 6 June 2025), Isabelle Maury (independent director, last appointed 5 June 2026) and David Hoey (permanent representative of director DERNHAM, first appointed 5 June 2026). Executive management is led by Dominique Ceolin as Chairman and Chief Executive Officer (Président-Directeur général), a role he has held since his first mandate on 10 October 1997, together with Gaëtan Fournier as Group General Secretary. The asset-management subsidiary is led separately by Alexandre Ospital as Chief Executive Officer, supported by deputy chief executives Franck Bonneau and Yves-Oleg Zajtelbach. Nationality is not disclosed for any officer in the sources reviewed.
Recent officer changes
Isabelle Maury was re-appointed as an independent director effective 5 June 2026. David Hoey was newly appointed to the board, as permanent representative of director DERNHAM, effective 5 June 2026. Sophie Guieysse was re-appointed as an independent director effective 6 June 2025.
Data availability
Officer information for ABC ARBITRAGE is available from the company’s own governance disclosures, which identify current board members, executive officers and appointment dates; resignation dates for departed officers are not itemised on the current governance page. Nationality and country of residence are not published for any listed officer.
Sources
ABC arbitrage, “Dirigeants et membres du conseil d’administration” (Governance), abc-arbitrage.com, retrieved 18 September 2026.
Registry feed — rows exactly as filed with INPI (Institut National de la Propriété Industrielle), including entries the profile above does not cover.
Group Structure
Group structure of ABC ARBITRAGE
ABC ARBITRAGE is the ultimate listed parent of the ABC arbitrage group. No single external entity holds a controlling stake in ABC ARBITRAGE itself — more than half of its capital is held in free float (54.26% as of 24 March 2026, per the company’s own capital-information disclosure) — so no immediate or ultimate parent company is identified for ABC ARBITRAGE. The group’s principal verified direct subsidiaries are ABC arbitrage Asset Management, the group’s asset-management and trading-execution entity in France, and Quartys Limited, an investment subsidiary incorporated in Ireland used to house capacity-constrained and incubating trading strategies and reported as wholly owned by ABC ARBITRAGE. The corporate structure therefore spans two jurisdictions, France and Ireland.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| ABC arbitrage Asset Management | France | FR 45125120100039 | Direct subsidiary | Ownership percentage not disclosed | Active | 18 September 2026 |
| Quartys Limited | Ireland | IE 537060 | Direct subsidiary | Reported wholly owned (100%) | Active | 18 September 2026 |
Data availability
The two directly held operating subsidiaries are confirmed by the company’s own executive-management disclosures and by third-party equity research citing the group’s annual financial reports, but an exact ownership percentage is not published for ABC arbitrage Asset Management. No parent company is disclosed for ABC ARBITRAGE given the absence of a controlling shareholder.
Sources
ABC arbitrage, “Dirigeants et membres du conseil d’administration”, abc-arbitrage.com, retrieved 18 September 2026. Edison Group, “ABC arbitrage — A specialist arbitrage trader and asset manager”, edisongroup.com, retrieved 18 September 2026. ABC arbitrage, “Information sur le capital”, abc-arbitrage.com, updated 24 March 2026, retrieved 18 September 2026.
ABC ARBITRAGE
France
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Frequently Asked Questions
What does ABC ARBITRAGE do?
Proprietary trading and asset-management group specialising in arbitrage strategies on European and American equity and equity-derivative markets, via subsidiary ABC arbitrage Asset Management.
Who owns ABC ARBITRAGE?
Major shareholders as of 24 March 2026: Financiere WDD 11.95%, Aubepar Industries SE 11.93%, David Hoey 5.85%, Eximium 5.06%, Dominique Ceolin 4.44% direct; free float 54.26%.
Who is ABC ARBITRAGE's UBO (Ultimate Beneficial Owner)?
No shareholder or calculated ownership chain reaches the 25% French beneficial-ownership threshold; no UBO identified from public disclosures.
What is ABC ARBITRAGE's company registration number?
ABC ARBITRAGE's registration number is 40034318200053, filed with INPI (Institut National de la Propriété Industrielle) in France. Its current status on the register is active.
Is ABC ARBITRAGE still an active company?
ABC ARBITRAGE's status on INPI (Institut National de la Propriété Industrielle) is listed as active.
When was ABC ARBITRAGE incorporated?
ABC ARBITRAGE was incorporated on 15 March 1995, according to INPI (Institut National de la Propriété Industrielle).
What is ABC ARBITRAGE's registered address?
The registered address on file for ABC ARBITRAGE is PARIS, France.
What legal structure is ABC ARBITRAGE registered as?
ABC ARBITRAGE is registered as a Public Limited Company in France.
What is ABC ARBITRAGE's revenue?
Consolidated net income of EUR 25.1 million and product of current activity of EUR 59.7 million for FY2025 (year ended 31 December 2025), per the group's 24 March 2026 results announcement.
Is ABC ARBITRAGE listed on a stock exchange?
Listed on Euronext Paris, Compartment B, under ISIN FR0004040608 and ticker ABCA.
Who are the officers/directors of ABC ARBITRAGE?
Chaired and led by Dominique Ceolin as Chairman and CEO since 1997; board of five members as of the company's 2026 governance disclosure.
Does ABC ARBITRAGE have a parent company or subsidiaries?
Direct subsidiaries include ABC arbitrage Asset Management (France) and Quartys Limited (Ireland, wholly owned); no controlling parent identified given majority free float.
Can Zavia monitor changes to ABC ARBITRAGE's ownership over time?
This profile reflects a point-in-time snapshot from INPI (Institut National de la Propriété Industrielle). Zavia's monitoring API can track changes to ABC ARBITRAGE's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access ABC ARBITRAGE's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including France, so records like ABC ARBITRAGE's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from INPI (Institut National de la Propriété Industrielle) and was last synced on 18 September 2026.