Hazeltree acquires Siman Systems
06 August 2025 US, UK

Hazeltree has acquired Siman Systems, a provider of margin replication and financing analytics technology.
The acquisition will expand Hazeltree’s platform to deliver a complete treasury management solution for asset managers.
According to the firms, Siman Systems’ technology will integrate into the Hazeltree platform to unify treasury and trading oversight.
David Simpson, CEO and founder of Siman Systems, comments: “Since inception, Siman Systems has sought to provide a complete pre and post-trade treasury solution, including collateral, margin, financing, cash, and exchange calculations.
“Being part of Hazeltree completes the pre-eminent treasury management solution for the alternative space.”
The solution aims to improve fund returns, enhance margin replication, provide a pre and post-trade margin calculator, as well as cost efficiency through collateral optimisation.
Commenting on the announcement, Lokesh Seth, CEO of Hazeltree, says: “Integrating Siman Systems’ enhanced margin replication engine marks a pivotal milestone for Hazeltree’s treasury management solution.
“It significantly accelerates our ability to deliver comprehensive treasury intelligence and control. Asset managers gain a powerful new tool to manage treasury operations with greater precision and agility, further strengthening our competitive position as the premier end-to-end treasury management solution.”
Following the acquisition, Hazeltree will welcome David Simpson, the new managing director of hedge funds, Ray McGrath, director of platform and engineering, as well as Siman Systems’ team of hedge fund treasury solutions experts.
The acquisition will expand Hazeltree’s platform to deliver a complete treasury management solution for asset managers.
According to the firms, Siman Systems’ technology will integrate into the Hazeltree platform to unify treasury and trading oversight.
David Simpson, CEO and founder of Siman Systems, comments: “Since inception, Siman Systems has sought to provide a complete pre and post-trade treasury solution, including collateral, margin, financing, cash, and exchange calculations.
“Being part of Hazeltree completes the pre-eminent treasury management solution for the alternative space.”
The solution aims to improve fund returns, enhance margin replication, provide a pre and post-trade margin calculator, as well as cost efficiency through collateral optimisation.
Commenting on the announcement, Lokesh Seth, CEO of Hazeltree, says: “Integrating Siman Systems’ enhanced margin replication engine marks a pivotal milestone for Hazeltree’s treasury management solution.
“It significantly accelerates our ability to deliver comprehensive treasury intelligence and control. Asset managers gain a powerful new tool to manage treasury operations with greater precision and agility, further strengthening our competitive position as the premier end-to-end treasury management solution.”
Following the acquisition, Hazeltree will welcome David Simpson, the new managing director of hedge funds, Ray McGrath, director of platform and engineering, as well as Siman Systems’ team of hedge fund treasury solutions experts.
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