The European Central Bank published research in its Financial Stability Review assessing how the structure of an investment fund’s investor base affects resilience to liquidity shocks, with a focus on the April 2025 tariff-related market turmoil. The analysis finds that euro area-domiciled equity and high-yield corporate bond funds primarily held by households experienced smaller and less procyclical outflows than funds dominated by foreign or institutional investors, supporting more stable funding conditions during stress. Households have become the largest domestic investor group in these funds, with their share of holdings rising by around 25% since 2017 and now matching those of major domestic institutional investors combined. Using fund-share level flow data and a classification of investor bases, regression results across four stress episodes (2018 China-US trade tensions, the COVID-19 outbreak, the 2022 Russia-Ukraine shock and April 2025) show significantly larger outflows for funds mainly held by foreign or institutional investors, including an estimated 0.9 percentage point higher outflow rate for foreign-held funds relative to household-held funds during the 2018 episode. The stability benefit is not observed where households invest indirectly through funds of funds, where flow dynamics were similar regardless of the ultimate investor base, and the box also points to limited pockets of procyclicality linked to speculative retail behaviour based on a Reddit-derived sentiment indicator. The ECB notes that prudential approaches aimed at limiting vulnerabilities from liquidity mismatch should consider investor behaviour, and links broader household participation in euro area markets to potential funding stability benefits in stress periods.