Writing in the New York Times, UCLA finance professor Ivo Welch, who co-authored a study on the impact of divestment upon South Africa, writes about the impact, or lack thereof, that divestment will have on the coal industry. The occasion for the op-ed, of course, is Stanford’s decision to divest from fossil fuel companies and pressure to do so at other campuses, such as Harvard.

my co-authors and I found that the announcement of divestment from South Africa, not only by universities but also by state pension funds, had no discernible effect on the valuation of companies that were being divested, either short-term or long-term.

Granted, Welch writes, economic impact is not the only reason to divest from a country or industry. “Morals matter.”

Would I have divested from South Africa? Yes, but I would have had no illusion that doing so would have made a difference.

Welch concludes that if Stanford wanted to make a difference, it should actually buy more energy stocks, so that it would have greater leverage over how energy companies conduct their businesses…