Key Takeaways
- • Two Sigma has relocated its London office to the fifth floor of 7 Devonshire Square near Liverpool Street, with plans to occupy the sixth floor following refurbishment, expanding total capacity to approximately 20,000 square feet and accommodating up to 200 employees.
- • The move positions Two Sigma as a direct neighbor to Jane Street, another prominent quant trading firm also headquartered at Devonshire Square, though Jane Street is reportedly exploring expansion opportunities elsewhere in London.
- • The new office represents a significant expansion from Two Sigma's previous location at City Tower on Basinghall Street, where the fund occupied three floors with notably smaller square footage.
- • Two Sigma's 2025 performance marked its best returns of the decade to date, demonstrating strong operational momentum despite internal co-founder disputes between John Overdeck and David Siegel in recent years.
- • As of 2024, Two Sigma maintained over 100 employees in London, predominantly engineers, with the expanded facility signaling the firm's intention to grow its UK headcount in 2026.
Summary
Two Sigma, a major quantitative hedge fund, has consolidated its London operations at 7 Devonshire Square near Liverpool Street, transitioning from its previous multi-floor arrangement at City Tower on Basinghall Street. According to Companies House filings, the fund currently occupies the fifth floor exclusively and is expected to take the sixth floor following refurbishment, bringing total space to approximately 20,000 square feet with capacity for roughly 200 employees.
The relocated office places Two Sigma in immediate proximity to Jane Street, a specialist trading firm that maintains offices at the same Devonshire Square estate, occupying the entirety of 212 Devonshire Square. Jane Street is reportedly exploring alternative London locations to expand its own footprint, suggesting the current arrangement may be transitional for at least one of the two firms.
The move reflects Two Sigma's strategic expansion ambitions in London, where the firm maintained over 100 employees as of 2024, predominantly in engineering roles. The substantially larger floor space—doubling the fund's previous footprint—indicates management's expectation of headcount growth throughout 2026. This expansion occurs against the backdrop of Two Sigma's strongest performance of the current decade in 2025, providing financial capacity for organizational scaling.
The relocation also addresses talent acquisition and retention considerations; recent filings suggest Two Sigma has increased compensation for its London team in 2026, though some personnel departures have occurred. The modern office features open-plan workspace, dedicated meeting facilities, breakout areas, on-site amenities including bike storage and locker facilities, and an in-building café—standard provisions designed to support expanded operations and employee engagement.
The relocated office places Two Sigma in immediate proximity to Jane Street, a specialist trading firm that maintains offices at the same Devonshire Square estate, occupying the entirety of 212 Devonshire Square. Jane Street is reportedly exploring alternative London locations to expand its own footprint, suggesting the current arrangement may be transitional for at least one of the two firms.
The move reflects Two Sigma's strategic expansion ambitions in London, where the firm maintained over 100 employees as of 2024, predominantly in engineering roles. The substantially larger floor space—doubling the fund's previous footprint—indicates management's expectation of headcount growth throughout 2026. This expansion occurs against the backdrop of Two Sigma's strongest performance of the current decade in 2025, providing financial capacity for organizational scaling.
The relocation also addresses talent acquisition and retention considerations; recent filings suggest Two Sigma has increased compensation for its London team in 2026, though some personnel departures have occurred. The modern office features open-plan workspace, dedicated meeting facilities, breakout areas, on-site amenities including bike storage and locker facilities, and an in-building café—standard provisions designed to support expanded operations and employee engagement.
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