This chapter explores and rejects the thesis, that ethical decision -making can be reduced to computational and AI-based processes. It does so from the perspective of the Zurich-based asset management company Arete Ethik Invest AG. This market player from the business practice of investment ethics possesses a complex decision-making process including the discursively established judgments by an independent, human-based committee. Conceptually, a critical stance is taken towards unreflected demands for quantification and computerization as consequences of a computationalist mindset. Two main arguments are presented against the reduction of ethical decisions to computation and AI. First, based on reasons given in the literature of the Philosophy of Mind, the Computational Theory of Mind is rejected. Second, based on practical experience, it is shown that any complete ethical decision-making process presupposes a qualitative, non-computational ethical grounding in a self-conscious being and purpose-giving agent. To conclude, methodological implications are discussed for an integrative, discursive ethical approach for considering investment decisions.