Indonesia IHSG Seen Vulnerable Before U.S. Inflation Data

The U.S. inflation backdrop remains the key external driver. Adalytica’s confidence gauge on the Fed’s 2% inflation target is at 81, while its 5-year inflation breakeven sentiment sits at 15, or “Extreme Fear,” underscoring how sensitive markets remain to the next price-print. Long-term inflation expectations and wage inflation sentiment are also weak, suggesting investors are bracing for a data-dependent Fed rather than an imminent policy pivot.

That setup has already helped shape recent moves in Indonesia. Foreign investors bought Rp 2.3 trillion of Indonesian stocks last week, far more than the prior week’s Rp 279.23 billion, while the exchange’s average daily trading value jumped 25.75% to Rp 19.22 trillion and volume rose 35.9% to 48.99 billion shares. The inflow reflects improving local momentum, but it also leaves the market exposed if U.S. inflation surprises to the upside and knocks back the rupiah and foreign buying.

Broader risks are also building around energy. Tensions in the Middle East have pushed up global oil prices, which could filter into import costs and inflation expectations across Asia. Herditya Wicaksana of MNC Sekuritas said the rupiah still has room to strengthen, but traders will also watch Indonesia’s foreign reserves data for clues on external resilience.

For investors, the next catalyst is clear: this week’s U.S. CPI and PPI releases. Softer inflation would support the case for a dovish Fed, weaker Treasury yields and continued inflows into risk assets; a firmer print could trigger profit-taking in the IHSG after last week’s rebound.