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Investing in uncertain times: How to stay on track for long-term growth

Last Updated: March 31, 2026

The present Iran conflict demonstrates that periods of market stress can feel unsettling. Headlines shift by the hour. Markets swing sharply. And human nature – to protect ourselves, reduce risk, and make quick decisions – can easily take over.
But studies in behavioural finance show that staying invested during crises typically leads to better long‑term outcomes than ‘panic selling’ or attempting to time the market. The ability to remain calm – when circumstances are anything but – is one of the most powerful advantages you can have as an investor.
Emotional decisions can harm your returns in the long run – and a calm, long‑term mindset can help protect and grow your wealth, even in uncertain times.
With investing, your capital is at risk. The value of your investments can go down as well as up, and you could get back less than you invested.

  • Financial Planning
  • Iran
Our People

Bertie Grossart

Last Updated: April 1, 2026

Bertie is an investment manager specialising in the management of portfolios for individuals, family groups and their associated trusts, investment companies and pension funds. Prior to this he managed a team in Investment Risk, having joined Rathbones in 2018.
He graduated from Oxford Brookes University with a degree in Business and Geography. He is a Chartered Member of the Chartered Institute for Securities and Investments (CISI) and holds the Investment Advice Diploma (IAD) and Level 7 Chartered Wealth Manager qualifications.
Our People

Adam Kerr

Last Updated: April 1, 2026

Adam is an Investment Manager based in Rathbones’ Glasgow office. He originally joined Investec Wealth & Investment, which merged with Rathbones in 2024. Adam manages bespoke investment portfolios for a broad range of clients, including families, charities, and trusts.
Adam’s primary focus is helping clients achieve their long-term financial objectives through thoughtful, disciplined investment management. He places strong emphasis on building lasting relationships and takes genuine care in delivering outcomes that align with each client’s personal goals and circumstances.