LBP AM's CIO makes the case that climate transition investing does not hurt financial performance

LBP AM chief investment officer Guillaume Lasserre has pushed back on one of the most persistent assumptions in institutional finance: that orienting a portfolio toward the climate transition requires accepting lower financial returns. Lasserre's position, published by Responsible Investor, is that this framing is a false choice and that climate risk itself is the performance risk investors should be pricing. The argument carries weight coming from the investment arm of La Banque Postale, one of France's largest financial institutions with a long standing commitment to responsible investment.

The timing of Lasserre's intervention matters for European ESG practitioners. SFDR product classifications, SBTi aligned fund mandates, and the growing CSRD disclosure burden on portfolio companies are all pushing institutional capital toward a closer examination of how climate exposure translates into financial risk. Asset owners and consultants advising them are increasingly being asked to justify transition aligned allocations not on ethical grounds but on a pure risk return basis, and that is precisely the terrain Lasserre is operating on.

For in house ESG managers and sustainability consultants working alongside investment teams, the framing matters practically. If the argument that transition investing depresses performance remains dominant among finance committees and boards, it slows internal approval for ESG integrated strategies and complicates the double materiality assessments required under CSRD, where financial materiality must be demonstrated alongside impact materiality. Lasserre's position gives practitioners a credible senior voice to cite when making the case internally.

The debate also connects directly to how European regulators are structuring the market. The European Commission's push for green asset ratios and the taxonomy alignment disclosures required under SFDR are built on the assumption that identifying sustainable activities is compatible with sound financial management rather than opposed to it. If major asset managers publicly affirm that position, it reinforces the regulatory architecture rather than undermining it.

Broader market signals are consistent with Lasserre's view. The share of bank and fund financing directed toward low carbon energy relative to fossil fuels grew year on year in 2025, according to separate analysis, even though both categories still fall short of the levels required for net zero pathways. The direction of travel in institutional capital allocation, at least in Europe, appears to be toward rather than away from climate aligned portfolios, whatever individual firms may say in anti ESG contexts elsewhere.