This paper examines whether banks' liquidity and maturity mismatch decisions are affected by the choices of competitors and the impact of these coordinated funding liquidity policies on financial stability. Using a novel identification strategy where interactions are structured through decision networks, I show that banks do consider their peers' liquidity choices when determining their own. This effect is asymmetric and not present in bank capital choices. Importantly, I find that these strategic funding liquidity decisions increase both individual banks' default risk and overall systemic risk. From a macroprudential perspective, the results highlight the importance of explicitly regulating systemic liquidity risk.