Central Banks & Macro risk-off · 6–18 months
A what‑if from the future

What if Indonesia's nickel bet blows a hole in its budget?

Nickel below $14k blowing a hole in Jakarta's budget is a commodity-fiscal shock: the read is Indonesia-specific (weaker rupiah, wider sovereign spread) with copper/Freeport a loose industrial-demand sympathy, not a global event — the muted cascade is correctly sized. Rhymes with the 2014-15 commodity bust that hammered Indonesian fiscal and the rupiah. Transmission: nickel royalties underpin the budget after the downstreaming push. Forward: Indonesia's near-monopoly on nickel supply means a price collapse implies genuine demand destruction (EV/stainless), the real signal.

22%
our model probability
over 6–18 months
prediction markets — the market's odds
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Anchored to measured history 22% · 90% range 11–33% · 40 dated precedents behind it — a wider range means thinner evidence

Every number ships with its receipt — the odds, the range, the precedents, and a public grade at Reality Check. The statistical machinery that produces it is proprietary.

The butterfly cascade

How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.

Resolution timeline — how this probability is moving

Our model's odds (electric blue) over time vs the market's (Polymarket, amber), from the past toward the 6–18 months horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. Loading the probability audit trail…

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What it would mean

If this plays out, it is a risk-off shock. A failed downstreaming push and renewed nickel slide below $14,000 a tonne blow a hole in Jakarta's budget and sink the rupiah. The trigger decomposes into signed root‑shocks — Credit spreads ▲ · Industrial demand ▼ — which propagate through our causal graph to the markets below.

Methodology. Probability and impact are anchored to history and scored against what actually happens — wins and losses, in public, at Reality Check. Market odds live from Polymarket & Kalshi. By Vikas Singh, Quantitative Strategist. Updated 2026-08-13.