Momentum des marchés émergents porté par des achats à volume élevé au Brésil et en Chine

Regional Equity Surges and Volume Spikes

Emerging market equities are currently leaning higher, characterized by rapid and significant investor buying in several key hubs. In Brazil, the Bovespa closed +3.0% on 2026-09-02, with trading volume reaching 1.5x its recent average, a level noted as being far outside its normal range [13]. This high-volume activity suggests a strong shift in investor positioning that may spill into broader regional markets [13].

Similar outsized moves have been observed in East Asia. The Hang Seng closed +2.2% on 2026-09-04, a move described as being far outside its normal range [8]. Within mainland China, the Shanghai Composite rose 0.35% and the ChiNext Index rose 0.43% [3]. These significant gains in Hong Kong and China, paired with the surge in Brazil, indicate a strengthening momentum across major emerging market equity indices [3].

Structural Shifts in Energy and Agriculture

The upward sentiment is supported by significant structural transitions in key economies. In China, a major shift in the power mix is underway; as of the end of July, installed solar capacity reached 1.286 billion kilowatts, narrowly surpassing coal's 1.285 billion kW to become the nation's largest single power source [6]. This transition provides a structural tailwind for the renewable sector, bolstered by large-scale infrastructure projects such as PowerChina's 1.8GW wind portfolio and Sungrow's 10GWh energy storage facility in Egypt [6].

Furthermore, the BRICS bloc maintains a dominant position in global resource markets, which provides a foundational strength to these emerging economies. In 2023, BRICS nations accounted for approximately 32.8% of the world's total agricultural land—totaling roughly 15.7 million square kilometers—and 20.3% of global food exports [3]. This resource dominance, particularly in the agribusiness sectors of nations like Brazil, underpins long-term economic stability [3].

Localized Fragilities and Macro Headwinds

Despite the broad momentum, several regions exhibit notable fragility. South Korean equities face specific risks as retail net buying plummeted 90% in August, falling from 54.5 trillion won in June to 5.4 trillion won [7]. Additionally, corporate buybacks from major players like Samsung Electronics and SK Hynix are projected to be exhausted by mid-October, potentially leaving a gap in market support if foreign capital inflows do not materialize [7].

In India, the Nifty closed below 24,000, marking a drop of approximately 150 points [4]. This technical break, combined with concerns regarding the credibility of GDP data, creates a backdrop of uncertainty for the region's largest economy [4]. Other macro pressures include:

• Supply-Chain Inflation: In China, a >80% quarter-on-quarter increase in memory prices in Q2 2026 is driving significant Bill of Materials (BOM) cost increases for smartphones, affecting low-end, mid-range, and high-end models [4].
• Economic Instability: Argentina continues to face political-economic fragility as efforts to stabilize inflation—which reached near 300% in December 2023—have yet to result in a full economic recovery [4].
• Real Estate Risks: While Chinese real estate sectors show activity, there are conflicting signals, including reports of broken capital chains, debt repayment difficulties for property firms, and property disputes in Haikou [3].

Geopolitical and Institutional Realignment

The market landscape is also being shaped by evolving geopolitical architectures. The Shanghai Cooperation Organization (SCO) recently adopted 28 achievement documents at its Bishkek summit, including a "2026–2035 Development Strategy" designed to institutionalize cooperation in finance, the digital economy, and energy [8]. This move toward a "Eurasian governance platform" adds a layer of complexity to global interest coordination [8].

Other regional alignments are also emerging, such as the "Mecca Defense Alliance" between Turkey, Saudi Arabia, and Pakistan, which includes a "collective deterrence" clause [8]. While these developments introduce new complexities, they coincide with the current sharp upward trend in regional equity indices [8].

What to watch

• US Monetary Policy: The upcoming US Federal Reserve decision next week is a critical signpost for Asian markets and global emerging market positioning [1].
• China Regulatory Milestones: The implementation of new Chinese Regulations on Exit-Entry Administration on September 15 and the revised National Defense Mobilization Law taking effect on October 1 [3].
• Indian Market Indicators: The Indian government's weekly bond auction of ₹32,000 crore ($3.39 billion) and the Nifty's ability to reclaim and close strongly above the 24,400–24,450 level [4].
• Brazilian Healthcare and Policy: The effectiveness of Brazil's new medication negotiation committee and the continued rollout of the "Smart ICU" telemedicine initiative [7].
• China Healthcare: The implementation of the 2026-2027 influenza vaccine guidelines, which recommend vaccination between September and October [7].