This paper examines the Reaching-for-Coupon (RFC) phenomenon in U.S. corporate bond mutual funds. We define RFC as a portfolio tilt toward higher-coupon bonds relative to peers with similar yields. Using detailed bond-level holdings data from 2002–2018, we construct a novel fund-level RFC measure and show that high-RFC funds attract larger inflows, particularly in low-interest-rate environments. Crucially, investor flows into RFC funds are less sensitive to poor performance, leading to a less concave flow–performance relationship and mitigating redemption-driven fragility. These altered flow dynamics strengthen managerial incentives to take risk. Moreover, compared to Reaching-for-Yield (RFY) funds, RFC funds provide more stable income streams and are less exposed to credit downgrades. Our results demonstrate that RFC captures a distinct channel through which income-driven investor demand shapes risk-taking and fragility in bond markets.