Indonesian assets saw sharp moves, with the rupiah, bonds and equities rebounding after recent losses. The rupiah rose back into the high-16,000s on Wednesday after a three-day slide to new lows, while domestic bonds bull-steepened and equities gained on improved global cues.
Bank Indonesia restated that rupiah stability is its “top priority”. Foreign reserves fell to $148.2bn in March from $151.9bn in February, returning to mid-2024 levels, alongside reports of strong intervention.
Market Volatility And Intervention Dynamics
Attention is also on forthcoming FTSE Russell and MSCI index decisions that could affect Indonesia’s equity market classification. Markets are watching developments in the Middle East, and short-end rupiah bond yields may find support as expectations for rate cuts reduce.
On public finances, a wider fiscal deficit is flagged for 1Q26, alongside rising pressure from energy subsidies. The 2025 energy subsidy budget is IDR 318trn, based on oil at $70 per barrel and USDIDR at 16,500, and both assumptions have been exceeded since March.
The Rupiah’s recent swing from over 17,000 back to the high 16,000s against the dollar shows that volatility is extremely high. We should be using options strategies like straddles to profit from these large movements, as Bank Indonesia’s (BI) strong intervention creates sharp, unpredictable reversals. The recent March data showing foreign reserves falling by nearly $4 billion to $148.2 billion confirms BI is actively defending the currency.
With BI prioritizing stability and imported inflation ticking up, any hopes for rate cuts are gone for now. Short-term bond yields will likely remain elevated, and we should position accordingly in interest rate swaps, betting that rates will stay firm through the second quarter. This view is reinforced by the latest March 2026 inflation figure, which came in at 3.5%, putting further pressure on the central bank to maintain a tight policy.
The government’s budget is facing serious pressure, which points to longer-term weakness for the Rupiah. The budget’s oil price assumption of $70 per barrel is being significantly breached, with Brent crude currently trading around $88. This brings back memories of the subsidy crises we saw in previous years, like in 2022, which ultimately strained public finances and weighed on the currency.
Index Reviews And Hedging Approach
Given this underlying fiscal risk, we are looking at buying longer-dated USD/IDR call options. Positioning for a move towards 17,500 in the third quarter seems prudent, as BI’s ability to intervene may wane if commodity prices remain this high. These options offer a defined-risk way to bet on a gradual depreciation once market focus shifts from intervention to fundamentals.
We must remain cautious of the upcoming MSCI and FTSE index reviews in May and June. A potential upgrade for Indonesian equities could trigger a wave of foreign inflows, causing a sharp, short-term rally in the Rupiah. It is critical to hedge for this binary event, perhaps by using short-dated options or reducing overall position sizes as the announcements approach.
