«Sinner spa», the 4 million mortgage for two apartments in Milan in Corso Venezia: how the champion invests

We are republishing this article by Mario Gerevini: it was one of the most appreciated by our readers in 2025

News and news from the “Sinner spa“, the small Italian-Monegasque empire of the South Tyrolean champion which, victory after victory and sponsor after sponsor, is expanding and enriching itself. While at ATP Finals in Turin the magnificent eight of world tennis are playing for the title of Master, let’s go into the corporate portfolio of the former number one.

Papers and deeds

From accounting papers, notarial deeds (notary Alessandra Radaelli of Milan), an asset appraisal and an extraordinary meeting in the Principality we learn in the order that:
1- Jannik Sinner took out a 15-year mortgage to buy (from a rich Venetian family) the properties of Corso Venezia in the center of Milan. It’s not an ordinary mortal’s mortgage, of course.
2 – Its Monaco trustee resigned.
3 – There is the first balance sheet (at a loss) of the company that invested in Italy and which since September has become more central in the galaxy Foxer (the Sinner corporate brand).
4 – The Hager & Partners firm founded by has assumed an important technical role in financial operations Heinz Peter Hagera listed accountant and real estate entrepreneur from Bolzano, investigated in the maxi investigation by the Trento Prosecutor’s Office into alleged illicit connections between business and politics, with the Austrian tycoon at the center René Benko of which Hager, according to the investigative hypothesis, was the right-hand man in Italy.

Apartments of 403 and 289 square meters

The documents of the real estate sale in Milan say, in addition to what is already known, that Sinner through his Italian company Foxera Re Com sas (Foxera sas), managed by the manager and friend Alex Vitturpaid over 6.5 million (almost 10 thousand euros per square meter) for two office apartments of 403 and 289 square meters. The Buziol-Dametto family, former owners of the clothing brand, sold them to him in 2023. Replay. These are properties inside Casa Barelli, a historic building in Milan a stone’s throw from Piazza San Babila.

The 5% mortgage for 2023

The funds for the operation arrived from Monte Carlo for 2.9 million in the form of an interest-free shareholder loan (Italian Foxera sas is controlled by Foxera Re Monaco) while 4 million were borrowed at a rate (APR) of 5%. No favors, therefore: those were the market conditions at that time also for the then number 4 in the world. It is possible that with the drop in rates Sinner has renegotiated the conditions in the meantime. It was not Intesa Sanpaolo, his official sponsor since 2021, who lent the 4 million to the champion, but Chebanca! then became Mediobanca Premier. And now part of the Monte dei Paschi group.

The limited partnership becomes big

In the meantime, however, the Italian company that made the investment in the center of Milan has taken on a more structured legal “habit” since September, transforming itself from a substantially real estate limited partnership (sas) to an LLC with a corporate purpose and a much more far-reaching operational potential, including as a holding and coordination company. So Jannik, after having abandoned his Italian residence and tax system for the Monegasque paradise in 2020 at the age of 19, is now investing his untaxed earnings in his country?

Transfer to Brunico

We’ll see: only a few weeks ago Foxera srl ​​took on its new guise, transferring among other things its domicile from the Milan offices of Hager & Partners to those of Baumgartner Partner in Brunico where Vittur is also a customer. And it is the forty-one-year-old manager and historical friend of Sinner who has all the management powers alone.
Two professional consultants were at the center of the operation: Josepha Iervolino e Dietmar Huber. Special prosecutors were appointed both by Foxera Re Monaco (Sinner), which indirectly owns 99% of the Italian company, and by Avima (Vittur) which has 1%.

The expertise

The appraisal on the assets of Foxera sas in view of the transformation into an LLC was also signed by Huber. As of May 31st – according to the report – it had the Milanese properties in its portfolio at a net book value of 6.6 million and recorded a loss for the period of 147 thousand euros and a cumulative one of 454 thousand. It is the first, only and skimpy known account of Sinner’s corporate activities. In the meantime, he has already exceeded 50 million dollars in career prizes, before taxes paid directly in the countries that organize the tournaments. According to some estimates, it then collects over 30 million euros from sponsors every year, reinvested by Monte Carlo companies that do not publish financial statements.

The consultants

Josepha Iervolino and Dietmar Huber are professionals from the tax and corporate consultancy firm Hager & Partners in Bolzano which also has an office in Milan in via Borgogna. Heinz Peter Hager, member of the Südtiroler Volkspartei, is one of the most powerful and important real estate entrepreneurs in Alto Adige. Last May he declared to the regional RAI that he was confident he could prove his innocence and “that absurd accusations” of corruption and mafia methods do not exist.

Gianni leaves

The corporate scheme tailored to Sinner’s fiscal and economic needs envisages that the group of finance companies called Foxera manage and invest the assets while the latest addition (August 2024) Wooly Lemon of Monaco deals with image rights and advertising promotion. Until recently, Giuseppe Gianni, a corporate consultant and owner of trust companies, was driving in tandem with Sinner. But in mid-July Gianni’s resignation arrived at an extraordinary meeting, which was then formalized at the end of September. Why? Nothing leaks. And there is no news of new managers appointed alongside the only remaining “gérant”, Jannik Sinner.

December 28, 2025 (changed December 28, 2025 | 07:22)

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