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How much passive investing is too much?
Warnings that index funds have broken the stock market all imply a threshold: a share of the market at which price discovery fails. Nobody making the argument names it. Owen Lamont, writing in the Financial Analysts Journal, argues that no such number exists short of complete passive ownership, and that what actually determines whether prices stay informative is who is left doing the trading. His case, the strongest peer-reviewed research against it, and what the performance
Robin Powell
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Does ESG divestment cut emissions?
Buy the clean companies, avoid the dirty ones, and emissions fall. That is the promise almost every sustainable fund rests on. New calibrations from Samuel Hartzmark of Boston College and Kelly Shue of Yale suggest the version of ESG divestment that leaves a high-emitting industry altogether can push global emissions up, while staying inside the industry and holding the cleanest companies in it brings them down. On a fund factsheet, the two look identical.
Robin Powell
Jul 2410 min read
What does ESG investing mean?
ESG investing has become a major theme in recent years. The initials stand for Environmental, Social, and Governance, but the term covers...
Robin Powell
Feb 10, 20253 min read
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