So what can an individual investor do? You might follow the Rockefeller Family Fund and divest from the fossil fuel companies entirely. The research firm MSCI offers fossil-free stock indexes — like the S.&P. 500 but without fossil fuel companies — as does a newer organization called Fossil Free Indexes. Various climate-aware mutual funds exist.

But even if you divest, says Jean Rogers, chief executive of the nonprofit Sustainability Accounting Standards Board, there’s no escaping the ripple effects of climate change. “Because it’s so ubiquitous, it’s very hard to diversify away from climate risk,” she told me.

Another approach is a kind of divestment lite. Asha Mehta, director of responsible investing at Acadian Asset Management, told me that her clients increasingly request a “decarbonization” of their portfolios. Worried that complete divestment might hobble a portfolio’s performance, however, Ms. Mehta might reduce a portfolio’s carbon footprint to, say, 80 percent of a benchmark like the S.&P. 500 by removing the biggest emitters.

A firm called Osmosis Investment Management takes a different tack. It researches the overall efficiency of companies — how many resources a firm uses to create how much product. And instead of excluding certain industries entirely, Osmosis chooses only the most efficient within a given sector. It caters to institutional investors, but plans to release a fund for individuals soon.

You can, of course, try to do what Osmosis does on your own; the Carbon Disclosure Project has a trove of information on how companies fare on the sustainability front. But here’s the problem. More than 5,600 corporations disclose sustainability information, but no standards govern these disclosures. The Sustainability Accounting Standards Board and others are working to devise such standards. Pressure is also mounting on the Securities and Exchange Commission to enforce the disclosure of sustainability information. The commission recently asked for feedback on reforming the disclosure process, and a good chunk of letters mentioned sustainability and climate change.

Under a Trump administration, it seems less likely that the S.E.C. will respond to these concerns. But that may have a paradoxical effect: If investors can’t count on regulators to enforce transparency on sustainability, says Sonia Kowal, the president of Zevin Asset Management, they may take matters into their own hands.

So if you’re concerned about how climate issues might damage your nest egg, you might begin by raising your voice. Ask your fund managers about their plans. And look at how the funds you own vote on sustainability-related issues, such as whether to calculate and disclose a company’s greenhouse gas emissions, or whether to develop a risk-assessment plan for climate change.