Asia Equities – 2026 Outlook for Hang Seng and Nikkei

Asia’s major equity benchmarks are heading into 2026 with very different recent histories but a shared question: can they sustain rallies that have been powered by policy support, AI optimism and, in some cases, unusually strong rebounds? An IG International market outlook highlights Hong Kong’s Hang Seng and Japan’s Nikkei 225 as bellwethers for the region’s next phase.​

The Hang Seng (HS50) delivered its best year since 2017 in 2025, rising about 29 percent year‑to‑date and finally shaking off some of the gloom that had plagued Chinese and Hong Kong equities. IG attributes the turnaround to a cluster of catalysts: easing of domestic regulatory crackdowns, targeted fiscal and monetary support from Beijing, and the launch of DeepSeek, a Chinese AI model that boosted sentiment around the mainland’s tech capabilities. Valuations, which had sunk well below historical averages and global peers, also had room to mean‑revert as pessimism eased.​

China’s supportive stance matters not only for mainland investors but for the wider region. An accommodative monetary policy, combined with infrastructure spending and selected property‑sector support, signalled a stronger commitment to stabilising growth. While US–China trade tensions and sporadic tariff escalations created waves of volatility, the market showed resilience during negotiation windows and periods of policy clarity. For 2026, IG sees further upside in Hong Kong if corporate earnings follow through, but warns that geopolitical shocks and regulatory surprises remain key downside risks.​

Japan’s Nikkei story is different. The index has benefited from corporate‑governance reforms, shareholder‑return initiatives and a weaker yen that supports exporters. Fiscal stimulus and a gradual exit from ultra‑easy monetary policy have also played roles, as the Bank of Japan signalled a path toward policy normalisation that still supports growth. Yet rising interest rates, even from deeply negative levels, present a potential headwind as higher discount rates and increased funding costs could weigh on some equity valuations.​

Futures markets currently price in two additional 25‑basis‑point hikes from the BOJ through 2026, which would take policy rates to around 1.1 percent, according to IG. The outlook note argues that gradual tightening should limit near‑term disruption but could still trigger sectoral rotations—from highly levered firms toward those with stronger balance sheets and pricing power. Political uncertainty around Japan’s new government and its approach to corporate reforms adds another layer of ambiguity.​

IG’s Asia outlook emphasises that regional investors will need to navigate not just index‑level moves but “resilience amid rotation.” In Hong Kong, that may mean differentiating between state‑linked giants benefiting from policy support and private‑sector firms that still face regulatory and demand uncertainties. In Japan, it involves assessing which companies can maintain margin expansion and shareholder‑friendly policies if rates rise and global demand cools.​

The broader macro backdrop—Fed policy, China’s growth trajectory, and the durability of the global AI capex cycle—will frame these decisions. For now, the base case in the IG and SocGen outlooks is that Asia can deliver another year of positive, if more muted, equity gains in 2026, with heightened dispersion between winners and laggards. For active managers, that could mean more opportunity; for passive investors, it raises questions about concentration risk and index composition as AI‑linked names and state champions loom larger in benchmarks.​