+41 79 227 29 08


is a value-oriented investment firm.

What's in the name?

iolite (also known as cordierite) is a crystal that changes color when pointed toward the sun, even on cloudy days. The Vikings discovered iolite’s unique property, using it as a compass, which allowed them to conquer the seas and cement their reputation as legendary seafarers.

Value investing

A share represents a fractional ownership of an underlying business and a bond is a loan to a business. Therefore, in the medium to long term, the performance of shares and bonds should strongly correlate with those of the underlying businesses.


At iolite, I try to keep things simple and stick to time-tested value investing strategies. I am not interested in selling so-called ‘innovative’ financial products and I aim to keep portfolio turnover as low as possible.

Track record

Honest quarterly reports provide you with insight into what I do and to what level of success.

iolite manages concentrated portfolios of global value investments with the aim to generate sustainable market-beating absolute returns. iolite serves a select circle of private and institutional clients willing to invest for the medium to long-term, and who would like to have first-hand access to a dedicated portfolio manager.

Key Benefits to Clients

No management fee: pay 0% until annual performance exceeds 4%

Full alignment of interests: co-invest with the portfolio manager, whose entire liquid wealth is invested in iolite

Time-tested investment strategy: value investing is a low risk, high return strategy that has proven to work well over time

Educated and experienced manager: invest with someone who was trained to beat the market and has done so in the past

On Value Investing

High-profile proponents of value investing, including Berkshire Hathaway chairman Warren Buffett, have argued that the essence of value investing is buying stocks at less than their intrinsic value.

The intrinsic value is the discounted value of all future distributions. The discount of the market price to the intrinsic value is what Benjamin Graham called the “margin of safety”.

Robert Leitz

is iolite’s sole owner and managing director. Before iolite, I held positions at various financial institutions, including TPG Credit (a hedge fund), Goldman Sachs’ European Special Situations Group, and KPMG Corporate Restructuring.

I graduated from the University of St. Gallen (HSG), Switzerland, with a Master of Science in Business Administration and Economics, and wrote my master’s thesis under the guidance of Prof. Eli Noam at Columbia University, New York.

Manual of Ideas

iolite highly recommends the Manual of Ideas – a great source for value investing ideas and insights into the global value investing network.

VALUEx Zurich/Klosters

Robert Leitz is a regular participant at the annual value investing conference VALUEx Klosters, hosted by Guy Spier.

Entrepreneurs’ Organization

Robert Leitz is a member of EO Switzerland.


iolite Partners GmbH is fully licensed as an Independent Asset Manager by the regulatory authorities in Switzerland as a member of the VQF.


iolite Partners GmbH
Zug, Switzerland
+41 79 227 29 08
info [at] iolitepartners.com

“We bring you exclusive insights from Europe’s most thoughtful investors, including Robert Leitz (iolite), Howard Marks (Oaktree), Guy Spier (Aquamarine), and many more! Indeed, we are convinced you’ll find the up-and-coming fund managers presenting at European Investing Summit to have truly compelling and differentiated ideas.”

John Mihaljevic

Managing Editor, Manual of Ideas

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