Citadel's head of risk: "It's our job to make money, no matter what"

Joanna Welsh, chief risk officer of Citadel and based in Miami, outlined the hedge fund's systematic approach to portfolio construction and risk management during remarks at the Reuters Momentum AI Finance 2025 event. Welsh emphasized that Citadel's fundamental mandate is straightforward: generate returns across all market regimes. This philosophy extends beyond benign conditions into periods of acute stress, where Welsh noted the firm expects "periodic washouts" and "painful short term drawdowns on great companies" but maintains conviction that disciplined portfolio construction will preserve and grow capital.

Welsh articulated a nuanced view of current market risks that extends beyond single-point-of-failure scenarios. She identified a "risk landscape where risks are starting to converge and stack," driven by structural imbalances in the financial system. Specifically, large-cap companies increasingly exhibit interdependencies where revenue growth must outpace debt issuance, while investor appetite for leverage must keep pace with rapid innovation cycles. This creates duration mismatch risk: corporations are issuing 30-40 year debt obligations to finance assets with 4-year depreciation cycles, creating embedded refinancing and obsolescence risks.

The risk environment has been further complicated by market expansion in lower-quality securities and illiquid asset classes. Welsh noted that zero coupon convertible bonds and private credit markets have grown substantially, expanding the universe of mispriced or basis-dislocated securities available to opportunistic investors. Rather than viewing this as purely negative, Welsh characterized such conditions as potentially constructive: "A brush fire could be pretty healthy," she said, implying that market stress events create alpha-generation opportunities for firms with capital, diversified trading capabilities, and sophisticated risk frameworks.

Citadel's $71 billion asset base spans equities, single-name credit instruments, convertible securities, and commodities, providing natural hedging and cross-asset risk diversification. Welsh's team of 50+ risk professionals conducts daily open conversations about risk exposure and constructs forward-looking scenarios across these interconnected markets. This approach prioritizes scenario-building and proactive positioning over reactive crisis management, enabling Citadel to maintain portfolio resilience "over quite a broad range of outcomes" and extract returns even during periods of market dislocation.