The algorithmic passive investor looked to measure ESG for every stock, the next gen investor bought Tesla. : The algorithmic passive investor looked to measure ESG for every stock, the next gen investor bought Tesla Paris, December 12, 2015. The most expansive international agreement to combat climate change has just been signed. Two investors sense that ESG is perhaps the next big thing in the world of investing. Investor A, let’s call her the algorithmic passive investor, rushes off and works for five years on creating passive funds linked to ESG scores.