Key Takeaways
- • Millennium Management is backing Third Epsilon Ltd., a Hong Kong-based quantitative hedge fund founded by former Citadel research lead Paul Dou, according to Bloomberg.
- • Third Epsilon will initially manage capital exclusively for Millennium, with the allocation potentially exceeding $1bn, per people familiar with the matter.
- • Dou spent six years at Citadel's Global Quantitative Strategies business and left in 2024 to establish the firm.
- • The deal extends Millennium's pattern of seed and strategic backing for emerging managers, including Echion Capital and Qin Xiao.
- • Industry assets reached an estimated $5.2tn in Q1 2026, per Hedge Fund Research, underpinning continued allocator demand for systematic strategies.
Summary
Millennium Management is backing the launch of a new quantitative hedge fund founded by former Citadel researcher Paul Dou, according to a Bloomberg report. The Hong Kong-based firm, Third Epsilon Ltd., was established by Dou after he departed Citadel in 2024. It will initially manage capital exclusively for Millennium, and people familiar with the matter said the allocation could eventually exceed $1bn.
Dou spent six years at Citadel, where he served as a research lead within the firm's Global Quantitative Strategies business. His move to launch an independent systematic manager reflects a broader trend of experienced quant researchers leaving multistrategy platforms to start their own funds, a development that several industry reports have highlighted as Citadel alumni increasingly attract external capital.
The investment is the latest in a series of seed and strategic arrangements by Millennium, which has increasingly backed emerging hedge fund managers. Recent examples include Echion Capital, a commodities-focused firm led by former Millennium portfolio manager Chaitanya Mehra, and former Goldman Sachs trader Qin Xiao, who also received a significant capital allocation. Millennium, which manages approximately $89 billion in assets according to industry reports, has been among the most prolific external investors among multistrategy firms.
The launch comes as hedge fund formation accelerates amid rising institutional demand for alternatives. Industry assets reached an estimated $5.2tn in the first quarter of 2026, according to Hedge Fund Research, and recent allocator surveys point to continued appetite for both multistrategy and quantitative approaches. Large institutions, including Blackstone, have also explored backing start-up quant firms, reflecting growing interest in market-neutral and data-driven strategies, particularly in Asian equity markets.
Dou spent six years at Citadel, where he served as a research lead within the firm's Global Quantitative Strategies business. His move to launch an independent systematic manager reflects a broader trend of experienced quant researchers leaving multistrategy platforms to start their own funds, a development that several industry reports have highlighted as Citadel alumni increasingly attract external capital.
The investment is the latest in a series of seed and strategic arrangements by Millennium, which has increasingly backed emerging hedge fund managers. Recent examples include Echion Capital, a commodities-focused firm led by former Millennium portfolio manager Chaitanya Mehra, and former Goldman Sachs trader Qin Xiao, who also received a significant capital allocation. Millennium, which manages approximately $89 billion in assets according to industry reports, has been among the most prolific external investors among multistrategy firms.
The launch comes as hedge fund formation accelerates amid rising institutional demand for alternatives. Industry assets reached an estimated $5.2tn in the first quarter of 2026, according to Hedge Fund Research, and recent allocator surveys point to continued appetite for both multistrategy and quantitative approaches. Large institutions, including Blackstone, have also explored backing start-up quant firms, reflecting growing interest in market-neutral and data-driven strategies, particularly in Asian equity markets.
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