Preface

Context: In 2026 the A‑share index landscape has accelerated a shift toward precision and specialization. Index providers have launched dozens of targeted benchmarks and revised legacy rules to better reflect industry change, manage risk and guide long‑term capital toward strategic sectors. This article summarizes recent index launches, structural rule changes, and the market implications of a finer‑grained index architecture. Its purpose is to explain why the proliferation of thematic, sectoral and cross‑border indexes — alongside systematic rule upgrades such as ESG exclusions and sample adjustments — matters for institutional allocation, ETF product design, and the broader role of capital markets in supporting industrial transformation.

Lazy bag

Key takeaway: The A‑share index system has become markedly more detailed this year, with 374 new indexes and targeted rule revisions. Providers are prioritizing technology themes (robotics, semiconductors, AI, new power systems) and strengthening index governance through mechanisms like ESG negative screening and refined sample selection — improving the indices' role as investment tools and catalysts for capital allocation.

Main Body

The past year has seen a deliberate and sustained move toward a more granular A‑share index architecture. Index issuers and exchanges have introduced hundreds of new benchmarks and executed systematic revisions to existing flagship indices in order to enhance thematic clarity, risk control, and alignment with evolving industrial and policy priorities. According to industry data, 374 new A‑share indices were added year‑to‑date, with technology‑oriented themes dominating issuance and fixed‑income benchmarks also seeing increasingly fine segmentation.

New launches exhibit two clear attributes. First, thematic concentration: index families now commonly target narrow but economically significant domains — such as robotics, semiconductor value chains, artificial intelligence infrastructure, and new power systems — rather than broad sector buckets. Second, depth along the value chain: selection frameworks for many indices deliberately emphasize firms that occupy critical nodes in supply chains or provide enabling products and services, rather than limiting inclusion to downstream or consumer‑facing enterprises.

Consider the design of a recently introduced index focused on new power systems. Rather than relying on legacy industry classifications that group all power companies together, the index identifies six core tracks — generation resources, grid infrastructure, load management, energy storage, system intelligence and carbon‑transaction services and equipment — and then tiers constituents into "core key", "important support" and "frontier emerging" categories. This multi‑tier, multi‑track approach embeds a forward‑looking view of industrial evolution into index construction and helps product issuers create ETFs and structured products that match specific investment theses.

Fixed‑income indices are undergoing comparable refinement. Exchanges and index vendors have published benchmark matrices that span credit quality layers within specific thematic segments. For instance, a high‑growth industrial bond series may comprise a full‑market benchmark, a mid‑to‑high grade (AA and above) benchmark, and an AAA‑level benchmark. Such layered construction allows portfolio managers to express granular credit views within a given thematic space while maintaining clearer risk references across funds and mandates.

Parallel to new index issuance, systematic upgrades to established indices have intensified. Revisions commonly introduce mechanisms that were previously optional — for example, turning ESG filters from a scoring adjunct into an eligibility gate that excludes companies with adverse environmental, social or governance flags. Exchanges have also adopted faster exclusion timetables for stocks subject to formal market risk warnings and have refined sample capacities and replenishment processes to control concentration and turnover. Together these changes sharpen an index’s intended message, reduce unintended exposures, and improve its suitability as a replicable investment vehicle.

Market participants and policy observers point to several consequences. First, index products are becoming clearer statements of investment view: a refined benchmark more reliably channels exposure to an identified economic theme or technological trajectory. Second, the combination of transparent rules and explicit thematic focus accelerates institutional adoption. Large allocators — pension funds, insurance companies and sovereign vehicles — favor indices with rigorous, repeatable methodologies that support passive or semi‑passive implementation. Third, indices act as conduits that concentrate capital into targeted parts of the economy, encouraging financing and resource flows into areas prioritized by national industrial policy and long‑term strategic goals.

The index ecosystem is also fostering a tighter product pipeline: new indices are quickly converted into ETFs and other retail and institutional instruments. Data show a meaningful rise in new ETFs covering industry themes, broad‑but‑refined segmentations, sector leaders and dividend/value strategies. These products map to diverse investor appetites — from short‑cycle tactical allocations to multi‑year strategic allocations — and make thematic exposures accessible at scale.

However, the rapid proliferation of narrowly focused indices and derivative products brings challenges. Product homogeneity and asset fragmentation are growing concerns: too many similar indices and a scatter of small, low‑liquidity ETFs can dilute capital and increase the likelihood of underperforming, under‑tracked products. Market observers expect a natural consolidation: assets will gravitate toward indices and products with superior design logic, higher liquidity, lower tracking error and clearer investor communication. This means that the long‑term winners will be those index providers and issuers that combine rigorous methodology, transparent governance and effective product distribution.

To manage the evolution responsibly, experts recommend measured issuance and disciplined rule‑making. Index creators should avoid redundant or marginally differentiated benchmarks and instead focus on distinctive, research‑backed constructions. Operationally, issuers must prioritize liquidity management and tracking efficiency in product design. On the demand side, investor education is crucial: clarifying the investment logic, risk profile and rebalancing consequences of niche indices will reduce misallocation and support a healthier long‑term market for thematic products.

In sum, the A‑share index landscape is undergoing structural refinement. Greater granularity and professionalization of index design, paired with ESG institutionalization and layered credit benchmarks, are turning indices into more effective allocators of capital toward technology, sustainability and core infrastructure. While growing pains are inevitable, a disciplined approach by index providers, product issuers and investors can harness these developments to improve market efficiency, deepen institutional participation and better align capital markets with national industrial and environmental priorities.

Key Insights Table