Stewart AM is an investment advisory company that specializes in high quality, growing businesses. The foundation of Stewart AM’s investment philosophy is a well-developed investment process that employs a long-term fundamental analysis approach to investing, developed by Bill Stewart (W.P Stewart), with average net annual returns of more than 16% after fees over a 38-year history.

Our philosophy is based on the premise that large well-managed businesses that can grow their earning power by an average of 12-15% each year over a period of 5 years or more should generate very favorable returns for their owners when purchased at a reasonable valuation.

After the sale of W.P. Stewart & Co. to AllianceBernstein in 2013, Bill formed WPS Advisors Ltd., a Bermuda company. A group of analysts was assembled to pursue an investment philosophy similar to the one that earned Bill’s clients over 16% a year after fees for the 38 year history of W.P. Stewart and Co. The new business was domesticated to the US in 2017, as Stewart Asset Management, LLC, an SEC Registered Investment Advisor.

Bill has always focused on the magic of mathematical compounding. He established W.P. Stewart & Co. in 1974 with a goal of doubling his clients investment, after fees, every five years. When he sold the firm 38 years later he had comfortably exceeded that goal. There were 35 five-year periods over that time and there was only one five year period in which a very small loss of capital was incurred.

Stewart Concentrated US Growth

Concentrated portfolio of quality growth US companies

The strategy’s goal is to generate attractive long-term returns by investing in a concentrated portfolio of quality growth companies (typically holds shares in 15-20 businesses).

Companies are chosen following extensive analysis of their business prospects, industries and management. Specifically, companies must support the likelihood of 12-15% average earnings per share growth for the next 5-7 years.

You can see all the funds that we distribute in...

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Regulated Entity

CNMVBrightGate Capital SGIIC and BrightGate Advisory EAFI are entities registered and supervised by the National Commission for the securities market (CNMV)..


Contact us

You can contact us through our contact form and email (

C/ Génova, 11 4º Izda.
28004, Madrid. Spain.
Phone: +34 91 441 00 11