MSCI sustainability screens shape IPO eligibility as U.S. listings rebound

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MSCI sustainability screens and IPOs

Highlights

U.S. IPO proceeds reached USD 114 billion in H1 2026, over six times H1 2025, driving focus on criteria for MSCI index inclusion.
As of June 2026, USD 1.2 trillion in AUM tracks MSCI Sustainability and Climate indexes, whose distinct eligibility screens impact issuer access to passive capital.
Companies representing at least 56% of the MSCI ACWI Index by weight fail key sustainability or climate index criteria, highlighting exclusion risks based on business involvement and ESG ratings.

Index rules gain importance in the 2026 IPO market

As reported by MSCI, increased IPO activity in H1 2026 is drawing attention to index inclusion as a potential source of investor demand for newly listed companies. U.S. IPO proceeds reached USD 114 billion in the first half, more than six times the H1 2025 level, prompting issuers to focus closely on free float, market capitalization and liquidity before deals come to market.

MSCI Global Investable Market Indexes are designed to track a broad investable universe using free-float-adjusted market capitalization. MSCI says USD 1.2 trillion in assets under management, as of June 2026, is specifically linked to its Sustainability and Climate indexes, which use the same base framework but add eligibility and weighting rules that differ by methodology.

Those additional tests typically cover business involvement, reputational risks tied to corporate conduct and the strength of sustainability and climate strategies. For issuers seeking to widen their investor base, the rules-based and transparent nature of these screens can help identify possible paths toward inclusion in passive investment products.

Sustainability performance influences passive capital flows

MSCI says companies representing at least 56% of the MSCI ACWI Index by weight would not qualify for indexes based on core eligibility criteria from six key sustainability and climate methodologies. Exclusions can stem from exposure to areas some investors choose to avoid, including weapons, tobacco, fossil fuels, alcohol and gambling.

Climate-focused indexes may also screen out companies facing higher financially relevant environmental risks. MSCI notes that companies can fail multiple tests, though each index assigns them to the first matching screen category to avoid double counting, and the examples cited do not cover every criterion used across the methodologies.

Companies with stronger MSCI ESG Ratings and better climate alignment attracted larger indexed flows, indicating that sustainability performance is affecting passive investment allocation and financial outcomes. That dynamic is likely to matter more as newly public companies compete for inclusion in indexes that can broaden ownership and support demand for their shares.

In our earlier article on the Philippines’ planned sovereign bond market reforms, we examined how a new pricing convention and expected index inclusion could broaden the investor base and support liquidity. We also noted that these benefits are not automatic: outcomes still depend on factors like global rates, fiscal credibility, and deeper structural reforms that help capital markets channel funding into productive investment.

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