About

I built what I wished existed before.

Portrait of Claudia Taberner, founder of CUBE
Claudia Taberner
Founder · CUBE
BackgroundEconomics, Universitat de Barcelona · MSc Financial Management, UPF
ExperienceKPMG, Financial Services · Business Analyst, HP
NowManager to a professional tennis player · INSEAD (EBV)
FromFormer competition tennis player

No one was holding the whole picture.

I started where you're supposed to start. An Economics degree in Barcelona, a master's in Financial Management, two years at KPMG in financial services, then two more as a financial analyst at HP. I learned how big companies see money — in structures, in reporting, in decisions made years ahead of time.

But I didn't come from that world. I came from tennis. Before any of the spreadsheets, I was a competition player, and the court never really left me.

So when the chance came to manage a professional tennis player, I took it. On paper it's athlete management. In practice it's closer to running a small, fast-moving business where the CEO is also the product — the calendar is set a year out, and the money arrives in bursts from prize money, sponsors and appearances, across different countries and currencies.

An accountant, a bank, advisors — every one of them excellent at their own piece. But no one could answer the simple questions: where is everything right now, what does it look like in three years, and which decision this month matters most. The information existed. It just lived in ten different places and connected nowhere.

That gap is why CUBE exists. Accountants look backward and keep you compliant. Advisors and banks sell you products. All of it necessary — none of it the same as someone sitting above the whole thing, designing how it fits together and thinking a few moves ahead. That seat was empty, so I built it.

CUBE is financial architecture for high performers — athletes, founders, creators, entrepreneurs — people whose money has outgrown a single spreadsheet and one good accountant. We don't do your taxes or manage your investments. We build the structure that connects everything into one clear view, so you can see exactly where you stand and decide with confidence.

See what that includes

Our mission

To give ambitious people the clarity and confidence to make better decisions, protect their wealth, and build lasting financial independence.

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