We study how machines change humans’ role in information production activities of the asset management industry. Using the initiation of machine-based, systematic SEC filing downloading as a proxy of machine adoption, we find that machine adoption frees up the human workforce and allows humans to research a broader set of portfolio firms. After machine adoption, humans reallocate their information production activities towards portfolio firms on which they possess a comparative advantage over machines, including firms with more intangible assets, growth firms, and conglomerate firms. We also find that buy-side analysts affiliated with machine-adopting investment companies tend to participate more and be more inquisitive during conference calls held by such portfolio firms. Our findings suggest that the unique value of the human workforce is amplified once machines have relieved humans from tedious and mechanical activities.