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, creating approximately 20,000 square feet of total space capable of housing roughly 200 employees.
- • The new office positions Two Sigma as a direct neighbor to rival hedge fund Jane Street, which occupies 212 Devonshire Square on the same estate, marking a notable clustering of major quant firms in London's financial district.
- • Two Sigma's relocation represents a significant expansion from its previous City Tower location on Basinghall Street (three floors); the firm currently maintains over 100 London-based employees, predominantly engineers, with UK headcount at 107 as of 2024.
- • The move occurs as Two Sigma posted its strongest returns of the decade in 2025, signaling confidence in growth and talent expansion despite historical internal friction between co-founders John Overdeck and David Siegel.
- • Jane Street is reportedly exploring its own office expansion and potential relocation elsewhere in London, suggesting the Devonshire Square cluster may be temporary despite the immediate proximity of the two firms.
Summary
Two Sigma, the New York-headquartered quant hedge fund with approximately $70 billion in assets under management, has completed a strategic relocation of its London operations to 7 Devonshire Square, positioning itself in one of the City's prime locations near Liverpool Street. According to Companies House filings, the firm now occupies the fifth floor of the building, with plans to add the sixth floor following refurbishment. The combined space will total approximately 20,000 square feet, substantially larger than its previous three-floor footprint at City Tower on Basinghall Street, and is designed to accommodate approximately 200 employees.
The relocation carries competitive implications for the London quant ecosystem. Two Sigma's new office at Devonshire Square places it directly adjacent to Jane Street, another major quantitative trading firm that occupies the entirety of 212 Devonshire Square on the same estate. This proximity represents a notable clustering of sophisticated trading talent and capital, though Jane Street is reportedly exploring its own expansion and potential relocation elsewhere in London, making the current arrangement potentially temporary.
Two Sigma's decision to expand its London footprint reflects operational confidence following a strong 2025 performance, delivering the fund's best returns of the decade to date. The firm currently maintains over 100 employees in London, with 2024 Companies House accounts showing 107 UK-based staff, predominantly concentrated in engineering roles. The new office features open-plan workspace, meeting rooms, and breakout areas designed to foster collaboration—a design philosophy increasingly adopted by major financial services firms.
The move also occurs amid a period of internal organizational complexity at Two Sigma, with ongoing disputes between co-founders John Overdeck and David Siegel forming part of the fund's recent narrative. Despite such challenges, the firm's operational expansion and capital deployment signals confidence in its strategic direction and commitment to its London operations as a key component of its global footprint.
The relocation carries competitive implications for the London quant ecosystem. Two Sigma's new office at Devonshire Square places it directly adjacent to Jane Street, another major quantitative trading firm that occupies the entirety of 212 Devonshire Square on the same estate. This proximity represents a notable clustering of sophisticated trading talent and capital, though Jane Street is reportedly exploring its own expansion and potential relocation elsewhere in London, making the current arrangement potentially temporary.
Two Sigma's decision to expand its London footprint reflects operational confidence following a strong 2025 performance, delivering the fund's best returns of the decade to date. The firm currently maintains over 100 employees in London, with 2024 Companies House accounts showing 107 UK-based staff, predominantly concentrated in engineering roles. The new office features open-plan workspace, meeting rooms, and breakout areas designed to foster collaboration—a design philosophy increasingly adopted by major financial services firms.
The move also occurs amid a period of internal organizational complexity at Two Sigma, with ongoing disputes between co-founders John Overdeck and David Siegel forming part of the fund's recent narrative. Despite such challenges, the firm's operational expansion and capital deployment signals confidence in its strategic direction and commitment to its London operations as a key component of its global footprint.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.