Our paper explores the existence and nature of an established relationship between the banks’ function as liquidity creators, their profitability, and the instability of the financial system in Lebanon. Using original, annual observations of Lebanese bank data for the period 1997 – 2019 and employing fixed effect OLS regressions and system GMM to account for the dynamic aspect of our data, we show that liquidity creation is significantly associated with lower financial stability and thus higher instability. Banks’ profitability is positively linked to their systemic stability. The results vary slightly from one estimate to another, but they stand up to robustness tests. Our empirical results have a substantial impact on banks’ control and regulatory approaches in Lebanon and similar developing countries, while contributing to a deeper understanding of systematic and broader financial instabilities in these countries.