["The British Journal of Sociology, Volume 72, Issue 4, Page 1015-1029, September 2021. ", "\nAbstract\nUncertainty about market developments and their implications characterize financial markets. Increasingly, machine learning is deployed as a tool to absorb this uncertainty and transform it into manageable risk. This article analyses machine‐learning‐based uncertainty absorption in financial markets by drawing on 182 interviews in the finance industry, including 45 interviews with informants who were actively applying machine‐learning techniques to investment management, trading, or risk management problems. We argue that while machine‐learning models are deployed to absorb financial uncertainty, they also introduce a new and more profound type of uncertainty, which we call critical model uncertainty. Critical model uncertainty refers to the inability to explain how and why the machine‐learning models (particularly neural networks) arrive at their predictions and decisions—their uncertainty‐absorbing accomplishments. We suggest that the dialectical relation between machine‐learning models’ uncertainty absorption and multiplication calls for further research in the field of finance and beyond.\n"]