(Bloomberg View) – Reinsurance is one of the more conservative disciplines in global finance. It's also one of the most forward-looking.

Insuring the insurers demands the ability to envision long-term risks, as well as implementing an investment strategy that provides the growth and liquidity to pay claims. It doesn't sound like a fast-moving industry, but it can move decisively.

Decisive move

A recent change in Swiss Re AG's investment strategy is one of those decisive moves, one that highlights the insurance industry's long-term exposure to both the causes and effects of climate change.

Earlier this month, Swiss Re announced that it has been integrating environmental, social and governance considerations "into its investment process since the start of 2017." Taking ESG criteria into account, it says, "makes economic sense and reduces downside risks especially for long-term investors." Swiss Re's release says that it has selected the MSCI ESG Index "family" and the fixed-income Bloomberg Barclays MSCI Corporate Sustainability Index "as part of their ESG investing needs."

Why does it matter? The announcement is a bit dry (it's an asset allocation announcement from a reinsurance firm), but the numbers are not: Swiss Re had $155 billion in assets at the end of 2016, and according to Reuters, it has already moved more than $110 billion of it into ESG funds.

There's a lot more than just Swiss Re's $155 billion in play. Munich Re had $240 billion in assets at the end of last year, and all U.S. reinsurance assets exceeded $800 billion in 2015.

General insurance firms manage even more money. U.S. insurers have more than a trillion dollars in debt assets, and about a half-trillion in equities.

Those assets have to support a chunky payout schedule, too. Munich Re calculated the value of insured and uninsured U.S. losses to exceed $200 billion in 2005 and $100 billion in 2012 — not coincidentally, the years of Hurricane Katrina and Superstorm Sandy.

Insurance firms are doubly exposed to climate change

As my colleague Christopher Flavelle noted to me in a recent conversation, insurance firms are doubly exposed to climate change: They have to pay out for its effects, but if they own stocks of oil, coal and resources companies, then they are exposed to its causes as well.

In some cases, they could be triply exposed: paying out for impacts on carbon-intensive infrastructure damaged by catastrophic events caused by climate change, all while holding the equity and debt of the companies that own that infrastructure. There's even a potential reputational exposure; for example, California municipalities are suing oil and gas companies for climate-change-related damages such as sea level rise.

Swiss Re's shift to ESG indexes doesn't necessarily mean it will have zero fossil-fuel exposure in its portfolio, but it does mean far less. The largest single fossil-fuel-exposed debt issuance in the Bloomberg Barclays MSCI Global Corporate Sustainability Index is from French oil major Total SA (which is majority owner of the solar company SunPower Corp. and also owns a large battery maker). It's 0.056% of the index.

Swiss Re's shift to indexes doesn't make it an activist investor. Activist investors on climate change file shareholder resolutions asking companies to disclose the impacts of climate change on their businesses, or the potential impact of the Paris agreement on their future revenues. The Ceres database of climate and sustainability disclosure shareholder resolutions shows not a single insurance or reinsurance sponsor since at least 2011.

Moving assets away from downside risks

What it does make Swiss Re, perhaps, is an active reallocator that decisively moves assets away from downside risks, climate change included. If the world's second-largest reinsurer has to be exposed to climate change in its payouts, it might as well reduce its exposure in its investments.

Weekend reading Schroders, Europe's largest asset manager with $520 billion under management, has released its Climate Progress Dashboard. It forecasts global warming of more than 4 degrees Celsius (7.2 degrees Fahrenheit).

The Asian Development Bank says that unabated climate change would reverse Asia's hard-won development gains. Peak oil may arrive in 2042 — but it's not peak oil supply, it's peak oil demand. Saudi Arabia is making a $20 billion bet on turning its oil into plastics rather than fuels. 

Millennials don't want to work for oil and gas firms, even if "this ain't your daddy's oil." Harvard Business Review has launched a series on the business of artificial intelligence, starting with what it can and cannot do for an organization. Swiss artisan companies pay high wages, so they automate in order to survive.

The head of Intel's automated-driving division says that self-driving cars must earn our trust. The short film "Pain and the Machine" asks if sharing in human pain would lead robots to empathy and self-preservation. Google Glass is back — but now it's in enterprises, not San Francisco bars. 

This column does not necessarily reflect the opinion of the editorial board or Bloomberg LP and its owners.

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