Jakarta overtakes Tokyo as world’s most populous city, according to UN

A UN study using revised, consistent geospatial criteria now estimates Jakarta as the world’s largest city with 42 million inhabitants, followed by Dhaka (37m) and Tokyo (33m), reversing prior rankings that had Tokyo top. The report highlights rapid urbanisation — urban residents now comprise nearly half of 8.2 billion people, megacities rose from 8 in 1975 to 33 in 2025, and two‑thirds of global population growth to 2050 is projected to occur in cities — implications that point to sustained demand for urban infrastructure, housing, and climate‑related urban investments, particularly in emerging markets.

Analysis

Market structure: Rapid urbanisation centered on Jakarta (42m) shifts demand toward Indonesian construction, utilities, logistics, consumer staples and fintech services rather than mature Tokyo real estate. Expect higher demand for cement/steel/copper and power/LNG over years—this increases pricing power for materials suppliers and raises capex needs for ID infrastructure financing markets, supporting local FX and sovereign curve tightening if financed locally.

Risk assessment: Tail risks include catastrophic climate flooding in Jakarta, unexpected policy moves (land reform, capital relocation to Nusantara), and abrupt capital-flow reversals that widen IDR spreads; each could wipe out equity gains in months. Immediate market impact is modest; watch for short-term (3–12m) re-rating on announced infrastructure spending and long-term (3–10y) structural demand for housing and utilities.

Trade implications: Direct exposures that capture urbanisation are EM Indonesia equities (EIDO), EM local bonds (EMLC), commodity/mining exposure (COPX) and select global reinsurers for climate tails (RNR). Pair trades: long EIDO vs short Japan ETF (EWJ) for 6–18 months; use 6–12m call spreads on COPX or EIDO to control premium and buy OTM puts as tail insurance.

Contrarian angles: The market may underprice Jakarta resilience despite capital-move headlines—relocation to Nusantara is not immediate demand destruction for Jakarta property and services. Conversely, climate risk is under-hedged; consider embedding catastrophe protection rather than naked long-emerging-market exposure.

Key Decisions for Investors

• Establish a 2–3% notional long position in EIDO (iShares MSCI Indonesia ETF) now; increase to 5–7% if Indonesian 10Y yield tightens by >50bp or IDR strengthens >3% versus USD within 6 months. Target horizon 12–36 months, take profits on 20–30% nominal upside.
• Allocate 3–5% to EMLC (VanEck JPM Emerging Markets Local Currency Bond ETF) to capture carry from local-currency rates; trim if Indonesian 10Y yield falls >75bp from current levels or if FX inflows stall for two consecutive months. Duration exposure 3–7 years.
• Buy a 6–12 month call spread on COPX (Global X Copper Miners ETF) sized to 1–2% portfolio to capture commodity upside from construction demand in SE Asia; fund premium by selling nearer-term calls for delta-neutral cost if volatility >20%.
• Execute a relative-value pair: go long EIDO 3% and short EWJ (iShares MSCI Japan ETF) 2% for 6–18 months to express faster urban growth in Indonesia vs stagnating Tokyo metro; rebalance if relative performance diverges >8%.
• Hedge climate/regulatory tail: allocate 0.5–1% to reinsurer equities (e.g., RNR) or a catastrophe-bond fund, and buy 9–12 month 10–15% OTM puts on EIDO (or equivalent) as insurance; increase hedges if major flood/event occurs or if government announces disruptive land policy.