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Bridgewater, staff tell CalSTRS net‑zero progress faces data and policy headwinds; active approaches needed

California State Teachers' Retirement System Investment Committee · May 16, 2025
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Summary

Bridgewater and CalSTRS staff briefed trustees on risks in the energy transition, stressing that passive market‑cap portfolios are unlikely to achieve both decarbonization goals and financial objectives; trustees pushed for clearer metrics and case studies of engagement outcomes.

Bridgewater Associates’ head of sustainability research, Daniel Hochman, told the Investment Committee the world is not yet on a path consistent with Paris targets and that investors face both physical climate risks and transition risks as the energy transition plays out.

Hochman said past tailwinds that supported decarbonization in passive portfolios have slowed: interest‑rate normalization, supply‑chain constraints and a more contested policy environment have reduced near‑term policy support for immature climate technologies (SEG 2240–2260, SEG 2488–2506). “The world ahead is unlikely to look like the world we have known,” he said, describing a mix of physical and transition risks investors must manage (SEG 2351–2359, SEG 2520–2530).

Brian Rice, CalSTRS portfolio manager for Sustainable Investment and Stewardship Strategies, described staff’s three‑pillar approach to the fund’s net‑zero pledge: measuring and reducing portfolio emissions; using CalSTRS’ influence to engage companies and policy actors; and increasing investments in low‑carbon solutions. Rice cited examples of year‑over‑year reductions in measured emissions in certain listed equity sleeves and $3 billion in commitments in SIS private portfolios for low‑carbon solutions (SEG 2736–2820).

Trustees asked pointed questions on metrics, data quality and disclosure. Multiple trustees flagged scope‑3 data gaps and the difficulty of aggregating a single “headline” emissions number across asset classes; staff said asset‑class‑level reporting and richer one‑page summaries could be produced for the board and committed to pursuing improved disclosures (SEG 3000–3069).

Hochman and staff emphasized that achieving both financial and decarbonization goals likely requires an active, risk‑managed approach rather than a simple passive reweighting of global market‑cap exposures.

The committee did not vote on new net‑zero rules in the session but asked staff to follow up on metrics, scenario work and engagement case studies.