Insights & Videos

Expert opinion from Guinness Global Investors features in a variety of media.

Insights

Expert opinion from Guinness Global Investors features in a variety of media.

Dr Ian Mortimer, Matthew Page

02/10/2025

Is there a rising concentration risk in the S&P 500?

The S&P 500 is becoming increasingly concentrated, with its performance dominated by the outperformance of a select group of mega-cap technology stocks. In this insight, we will discuss how this concentration compares to historical periods, what risks it may present for investors and how an equal-weight, index-agnostic approach can help mitigate these risks while maintaining exposure to quality growth opportunities.

Guides

Read our latest guides taking you through the key concepts in asset management.

10/10/2025

Earnings per Share (EPS): How to calculate and use it

Earnings per share measures a company’s profitability on a per-share basis. It is used alongside other key financial metrics to assess a company’s comparative health and future potential. This introduction explains how to calculate the different types of EPS, basic and diluted, and the implications of each. It also explores what high or low EPS means, its limitations, and how external factors can affect its usefulness.

Videos

See more videos on our YouTube channel: Guinness Global Investors

Will James, Will Riley, Jamie Melrose

16/09/2025

Annual Conference Replays

Date: September 16, 2025 9:00 AM [BST]

Watch replays of the Guinness Annual Conference 2025 at The National Gallery

Webcasts

Our fund managers conduct quarterly webcasts where they discuss recent changes made to the portfolios, and take a look at positioning in the current market environment.

See the latest webcast series below. For the webcast archive, please click here

For professional investors only.