Capital Flight Halts in Jakarta as a Surprise Gulf Peace Breakthrough Ignites Market Rally

JAKARTA, Investortrust.id — A dramatic geopolitical breakthrough in the Middle East has sent shockwaves through Southeast Asia’s largest economy, igniting an explosive market rally and halting months of brutal capital flight.

The Jakarta Composite Index (IHSG) surged 2.94% to 6,184 within minutes of Monday’s opening bell, building on a massive 7.38% weekly gain that carried the index to 6,007.00 on Friday. The sudden turnaround marks a stunning reversal for an equity market that had been battered by escalating regional conflicts and a tumbling local currency.

The catalyst lay thousands of miles away. Over the weekend, U.S. President Donald Trump announced that Washington and Teheran had finalized a deal to reopen the Strait of Hormuz, the world’s most critical maritime energy chokepoint. The news sent global oil benchmarks tumbling—with West Texas Intermediate plunging 4.8% to $80.80 per barrel—and immediately revived global appetite for riskier emerging-market assets.

The furious rebound offers a case study in how quickly geopolitical relief can alter the fortunes of developing economies. For months, Indonesia faced a punishing cocktail of high global energy prices and an aggressive capital exodus that forced the central bank into emergency interventions. Now, with the primary threat to global supply chains receding, Jakarta’s battered blue chips are suddenly back in favor.

The Central Bank's Defensive Line

The market’s newfound stability was not achieved through geopolitical luck alone. Analysts note that Jakarta had already spent weeks laying a defensive floor beneath local assets.

Bank Indonesia (BI) recently engineered an aggressive, cumulative 75-basis-point interest rate hike over a single month. This defensive campaign included an unscheduled 25-basis-point increase on June 9, pushing the benchmark rate to 5.50%. The shock-and-aw tightening effectively halted the depreciation of the Indonesian rupiah, which had hovered at a perilous 18,200 per U.S. dollar before strengthening back below the 18,000 threshold.

Complementing the central bank’s monetary shield is Danantara, Indonesia’s newly formed super-sovereign wealth fund. Tasked with managing nearly Rp 300 trillion ($16.67 billion) in state assets, Danantara orchestrated coordinated stock buybacks through major state-owned enterprises (BUMN) at the nadir of the market downturn.

The dual strategy has yielded immediate dividends. On June 12, foreign investors recorded a net inflow of Rp 287.77 billion ($16 million). While modest against the Rp 5.98 trillion ($332.2 million) withdrawn over the prior week, the transaction marked the first net foreign purchase of Indonesian equities since May 20.

Banking and Commodities Lead the Charge

The morning rally was characterized by broad-based buying across heavyweights and state-backed entities. The financial sector gained 1.00% early Monday, building on a spectacular 9.67% surge the previous week.

Blue-chip lenders led the volume. PT Bank Central Asia (BBCA), the nation's largest private lender, jumped after booking a 16.75% gain last week. State-owned giants PT Bank Mandiri (BMRI), PT Bank Rakyat Indonesia (BBRI), and PT Bank Negara Indonesia (BBNI) followed closely.

In a research note published early Monday, Samuel Sekuritas declared that the worst of the market's correction has passed. The firm tapped Bank Mandiri as its top banking pick, citing exceptional asset quality and an anticipated dividend yield approaching 9%.

Concurrently, resource and industrial conglomerates controlled by billionaire Prajogo Pangestu—including PT Barito Renewables Energy (BREN), PT Chandra Asri Pacific (TPIA), and PT PT Dian Swastatika Sentosa (DSSA)—showed strong gains. The basic materials sector added 3.73% on Monday morning, while the energy sector advanced 1.99%.

Eyes on Global Index Rebalancing

Local asset managers are advising a portfolio rotation toward solid, undervalued lenders and commodity exporters with dollar-denominated revenue streams. Analysts expect state resource plays to benefit from new, business-friendly mining frameworks designed to eliminate export under-invoicing and improve foreign exchange retention.

State-backed miners like PT Aneka Tambang (ANTM) and PT Timah (TINS), alongside copper heavyweight PT Amman Mineral Internasional (AMMN) and coal giant PT Bumi Resources (BUMI), remain highly favored. Foreign fund managers are particularly watching Aneka Tambang, which is viewed as a prime candidate to re-enter the MSCI Standard Index during the upcoming August review.

The broader market now awaits crucial institutional signposts. Global index provider MSCI is scheduled to release its market accessibility review on June 18, followed by the FTSE rebalancing on June 22.

While previous MSCI reviews in February and May removed seven Indonesian constituent stocks following steep valuation corrections, investment houses expect Indonesia to comfortably maintain its emerging-market status without being relegated to a watch list.

With formal signing ceremonies for the U.S.-Iran accord scheduled for June 19 in Switzerland, the geopolitical premium that deflated Jakarta’s markets for most of the year appears to be permanently unwinding.