The numbers speak for themselves, and they say quite a lot. In 2019, the Dublin outpost of Susquehanna International Group, a global quantitative trading firm with 15 offices around the world, made trading gains of $220 million and closed the year with a pre-tax profit of $182 million. The bumper profit, more than double what it posted the previous year, did not come as a result of a brass plate accountant swerve. Instead, it came as a result of the work of the 495 people employed in its Irish office in the IFSC in Dublin. Just what exactly these people…

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