Funds managed by Stewart Investors (SI) will move to FSSA Investment Managers after the departure of three of its key portfolio managers.

First Sentier Group, the parent company for both brands, announced on Thursday that investment management responsibilities of SI funds would be transitioned to FSSA by close of business on Friday 14 November 2025.

Harry Moore, chief commercial officer and incoming CEO at First Sentier Group said: “Since the unexpected departure of three of SI’s senior portfolio managers in August, we have been working closely with the SI business to assess the longer-term impact of these exits.”

“This has led to the transition of investment management responsibilities from SI to the FSSA business,” he said.

In August, three of the firm’s senior portfolio managers David Gait, Sashi Reddy and Sujaya Desai resigned.

Gait and Reddy were lead managers of the $6.6bn Stewart Investors Asia Pacific Leaders fund. Desai was co-manager for three of SI’s emerging market strategies.

SI, which advocates a sustainable investing approach, dropped the word sustainable from its fund range last year amidst changing regulatory labels related to sustainability.

A number of SI strategies had also been suffering from a bout of underperformance before the managers left.

The transition will likely see the SI brand retire after a decade of operating as an independent investment team. FSSA and SI previously operated under First State Stewart up until 2015 when they separated.