Executive Summary
Key takeaways from the evolving landscape of China’s A-share indices:
– The Shanghai Stock Exchange Science and Technology Innovation Board Composite Index (上证科创板综合指数) has surged approximately 48% since its January 2025 launch, with over 274 billion yuan in linked fund products, prompting calls for its elevation to a core ‘Big Four’ A-share index alongside the Shanghai Composite, Shenzhen Component, and ChiNext Index.
– This potential shift fills critical gaps in representing China’s ‘hard tech’ sectors, moving the index system from a ‘traditional economy’ focus to a ‘tech + manufacturing’ dual-engine model, enhancing pricing power for new quality productive forces.
– Investment logic is transitioning from profit-driven metrics to innovation-driven benchmarks, with the Sci-Tech Innovation Board Composite Index trading at a higher valuation (67.04x P/E as of January 4) due to its emphasis on R&D and long-term growth potential.
– Experts predict the index will evolve from an ‘institutional专属’ tool to a ‘global配置新锚点,’ attracting long-term capital and international recognition as a transparent window into China’s tech rise.
– For investors, this necessitates revised strategies, including tolerance for volatility, a focus on non-financial indicators like patent counts, and balanced portfolios blending stability with tech exposure.
The Sci-Tech Innovation Board’s Meteoric Rise and Market Implications
At a pivotal moment with 600 listed companies on the Science and Technology Innovation Board (科创板), the Shanghai Stock Exchange Science and Technology Innovation Board Composite Index (上证科创板综合指数, Sci-Tech Innovation Board Composite Index) has emerged as a powerhouse, challenging the longstanding ‘Big Three’ A-share indices. Since its official debut on January 20, 2025, this index has not only provided a ‘panoramic view’ of the board but also sparked a fundamental debate: should it be canonized as the fourth pillar of China’s core market benchmarks, forming the much-discussed ‘Big Four’ A-share indices? The numbers speak volumes—from its launch to December 31, 2025, the index gained about 48%, with a staggering 115% rally from September 24, 2024, underscoring its volatility and growth trajectory.
This performance isn’t just a flash in the pan; it reflects deep-seated changes in China’s economic fabric. As Tian Xuan (田轩), Dean of the National Institute of Financial Research at Tsinghua University and Vice Dean of the PBC School of Finance at Tsinghua University (清华大学五道口金融学院), told Yicai, ‘The Sci-Tech Innovation Board Composite Index holds great significance for the A-share market, further完善ing the index system and ensuring different market tiers and industry sectors have more representative indices.’ This evolution is crucial for guiding capital toward firms with core technologies and high-growth potential, essentially reshaping how investors perceive Chinese equities. The concept of the ‘Big Four’ A-share indices isn’t merely a rebranding exercise—it symbolizes a maturation of China’s capital markets, where innovation takes center stage.
From Niche to Mainstream: The Index’s Rapid Adoption
The rapid product ecosystem around the Sci-Tech Innovation Board Composite Index highlights its growing clout. By December 30, 2025, 46 domestic fund managers had launched 78 index funds tied to it, with total on- and off-exchange scale reaching 274 billion yuan. Among these, 22 ETFs are listed on the Shanghai Stock Exchange, 17 of which have accompanying feeder funds, boasting an average post-listing return of 43.7%. Yang Chao (杨超), Chief Strategy Analyst at Galaxy Securities (银河证券), notes that this product structure exhibits unique ‘high concentration, high volatility, and high institutional participation’ traits, making it a core vehicle for allocating to China’s tech hard assets. This swift adoption suggests that the index is already behaving like a core benchmark, even without formal inclusion in the ‘Big Four’ A-share indices.
Filling Critical Gaps: How the ‘Big Four’ A-Share Indices Create a Complementary Ecosystem
The existing ‘Big Three’ indices—the Shanghai Composite Index (上证综指), Shenzhen Component Index (深证成指), and ChiNext Index (创业板指)—have long served as barometers for China’s stock markets, but they leave structural voids in representing the科技 sector. The Sci-Tech Innovation Board Composite Index steps in to fill these gaps, creating a complementary gradient that enhances the overall index system. In terms of coverage, the Shanghai Composite includes 2,242 companies excluding ST/*ST stocks, the Shenzhen Component comprises 500 large, liquid stocks from the Shenzhen market, and the ChiNext Index covers 100 such stocks from the创业板. In contrast, the Sci-Tech Innovation Board Composite Index encompasses 576 stocks after a 12-month listing period, achieving 96% board coverage and offering a more granular view of tech enterprises.
Industry weight analysis reveals why this complementarity matters. The Shanghai Composite is dominated by finance (25.09%), industrials (18.71%), and information technology (13.93%); the Shenzhen Component leans toward IT (26.01%), industrials (23.29%), and materials (11.52%); the ChiNext Index prioritizes industrials, IT, and telecom; whereas the Sci-Tech Innovation Board Composite Index is heavily weighted in IT (54.63%), industrials (23.59%), and healthcare (13.11%). This divergence allows the potential ‘Big Four’ A-share indices to collectively paint a fuller picture of China’s economy, from traditional sectors to cutting-edge innovation. Tian Xuan elaborates that together, they form a multi-layered, differentiated core index system, embodying a分层定位 from market breadth to industrial depth, with functional分工 spanning ‘whole-market representation—leadership selection—sector focus.’
The Structural Synergy Explained
Yang Chao breaks down the complementary relationships: first, with the Shanghai Composite, it shifts from ‘overall performance’ to ‘tech engine,’ as the latter’s传统 industry weights obscure innovation momentum; second, with the Shenzhen Component, it moves from ‘comprehensive growth’ to ‘tech depth,’ with the former covering application-layer firms like consumer electronics and the latter focusing on underlying technologies like semiconductors; third, with the ChiNext Index, it transitions from ‘龙头 concentration’ to ‘ecological panorama,’ as ChiNext aggregates mature leaders while the Sci-Tech Innovation Board Composite Index captures the full lifecycle of tech firms. This synergy means that the ‘Big Four’ A-share indices could offer investors a more nuanced toolkit, reducing blind spots in portfolio construction. For instance, the Sci-Tech Innovation Board Composite Index addresses空白 in ‘hard tech’全市场 representation, ‘small-to-mid-cap tech growth’ exposure, and独立定价 tools for the tech板块.
The Investment Paradigm Shift: Embracing Innovation Over Immediate Profits
As of January 4, valuation metrics underscore a stark divide: the Shanghai Composite’s P/E ratio stood at 16.3x, the Shenzhen Component at 25.52x, the ChiNext Index at 37.72x, and the Sci-Tech Innovation Board Composite Index at 67.04x. This梯度分化 isn’t arbitrary—it reflects a fundamental repricing of assets based on innovation potential rather than short-term earnings. Yang Chao argues that this gap isn’t a bubble but a direct pricing of硬科技 assets’ characteristics: high R&D投入, long-cycle returns, and national strategic scarcity. It signifies a systemic switch from a ‘profit-oriented’ to an ‘innovation-potential-oriented’定价范式, demanding new risk认知 and配置 logic from investors. For the ‘Big Four’ A-share indices to function effectively, market participants must adapt to this new reality.
This shift requires investors to recalibrate their approaches. Tian Xuan advises that for硬科技 assets, focus should be on long-term growth空间 and technological breakthrough possibilities, tolerating high valuations from short-term盈利 uncertainty. For traditional assets, emphasize fundamental analysis, cash flow stability, and dividend capacity. Moreover, valuation分化 implies stratified risk preferences, necessitating balanced allocations between high-volatility tech stocks and low-volatility blue chips based on individual risk tolerance. Investors must cultivate patience, enduring market noise and price swings to capture long-term value. In the context of the ‘Big Four’ A-share indices, this means recognizing that each index serves a distinct role—stability versus growth—and blending them accordingly.
Practical Strategies for Navigating the New Terrain
Yang Chao offers four actionable tips for Sci-Tech Innovation Board Composite Index investors, applicable to the broader ‘Big Four’ A-share indices framework: 1. Shift from ‘盈利思维’ to ‘创新思维,’ using non-financial metrics like R&D intensity, patent counts, import substitution potential, and policy support levels instead of just P/E or P/B ratios. 2. Accept high volatility and long-cycle returns, preparing for 3–5 year holding periods and significant interim drawdowns. 3. Build a ‘稳健 + 进攻配置’ strategy, combining stable allocations to the Shanghai Composite and Shenzhen Component for macroeconomic stability and dividends, with aggressive allocations to the Sci-Tech Innovation Board Composite Index for捕捉超额回报 from national tech breakthroughs. 4. Beware of ‘伪科技’ traps by scrutinizing hard indicators like R&D投入占比, core patent autonomy, and产业链关键环节. These steps ensure that as the ‘Big Four’ A-share indices take shape, portfolios remain resilient and forward-looking.
From Institutional Tool to Global Benchmark: The Path Forward for China’s Indices
Looking ahead, the Sci-Tech Innovation Board Composite Index—and by extension, the ‘Big Four’ A-share indices—face both opportunities and challenges in achieving global prominence. Yang Chao envisions it evolving from an ‘机构专属’ tool to a ‘全球配置新锚点,’ no longer just a ‘tech板块晴雨表’ but a core pricing benchmark for China’s new quality productive forces. This would make it a transparent, systematic, and indispensable window for global capital to understand ‘中国科技崛起.’ To realize this, several enhancements are needed, particularly in fostering patient capital and international integration.
Cultivating Long-Term Capital and International Recognition
Tian Xuan suggests that to attract long-term funds, the index must address concerns over硬科技 assets’ ‘高波动、难估值’ nature. This can be done by构建 index enhancement factors centered on R&D投入强度, core technology self-sufficiency rates, and产业链地位, improving the刻画 of tech firms’ intrinsic value. Dynamic weight adjustment mechanisms could also mitigate single-technology-path dependency risks, boosting抗周期波动能力. Additionally,借鉴 the ‘科创板50指数’ sample selection logic—incorporating metrics like patent quality and R&D personnel比例—would enhance识别精度 for truly innovative firms. On the product front, diversifying into ETFs, enhanced index funds, and derivatives, coupled with optimizing market-maker incentives for成分股, can improve liquidity and price discovery.
For global reach, Tian Xuan advocates incorporating the Sci-Tech Innovation Board Composite Index into Stock Connect programs and major international index series like MSCI and FTSE Russell’s ‘flagship指数系列.’ Allowing offshore long-term capital to access it via cross-border ETFs would bolster国际投资者’配置认同. As the科创板 hits the 600-company milestone, these steps could propel the ‘Big Four’ A-share indices onto the world stage, with Tian Xuan predicting that over the next 3–5 years, the index will see rising attention and importance, potentially becoming a ‘全球名片’ for China’s科技创新实力. With continuous improvement in成分股 information disclosure and governance, plus the inclusion of more globally competitive tech firms, it could establish a unique标识 in international markets.
Synthesizing the Evolution and Investor Imperatives
The potential formation of the ‘Big Four’ A-share indices marks a watershed moment for China’s financial markets, reflecting a deeper integration of technology into the economic narrative. By adding the Sci-Tech Innovation Board Composite Index to the core benchmark suite, China is not just expanding its index system but signaling a commitment to innovation-driven growth. This move enhances market结构韧性, guides capital toward硬科技, and elevates global investor认知, as summarized by experts like Tian Xuan and Yang Chao. The complementary nature of these indices—covering traditional sectors,深市龙头, growth companies, and tech全景—creates a robust ecosystem for diversified investing.
For investors, the key takeaway is adaptability. Embrace the shift from profit-centric to innovation-centric valuation, diversify across the potential ‘Big Four’ A-share indices to balance risk and reward, and maintain a long-term perspective amidst volatility. As these indices evolve, staying informed through sources like the Shanghai Stock Exchange and regulatory announcements from the China Securities Regulatory Commission (中国证监会) will be crucial. The call to action is clear: reassess your China equity strategies now, considering how the Sci-Tech Innovation Board Composite Index and the broader ‘Big Four’ A-share indices framework can align with your portfolio goals. Whether you’re an institutional investor, fund manager, or executive, this development offers a chance to tap into China’s tech ascent—so monitor index inclusions, product launches, and global integration steps closely to capitalize on the emerging opportunities.