“Fossil fuel divestment advocates are not unanimous with respect to identifying which assets should be divested, and there is no objective scorecard of which I am aware to determine this question. Further, as company policies and technologies evolve, the individual investments that comprise an appropriately divested portfolio will likely change. As a consequence, investment managers would need to undertake ongoing research and management costs to maintain compliance with divestment goals. This introduces a costly element of active management into endowment portfolios”.