A main criticism of corporate sustainability has long been that it results in firms not putting shareholders first, thus contradicting managers’ fiduciary duty. In 2016, however, I published a paper, “Corporate Sustainability: First Evidence on Materiality,” with George Serafeim and Mo Khan, that began to overturn that narrative. We documented that considering financially material ESG factors (i.e., those sustainability activities that are related to the core sector practices of the firm) improve portfolio returns, which is consistent with financially material sustainability activities creating shareholder value.