Geopolitical Alpha Index
Composite level
Component breakdown
Reserve currency composition (IMF COFER)
Central bank gold demand — WGC
While COFER above shows what currencies sovereigns hold, this section shows their gold accumulation. Central bank net gold purchases stepped up materially after 2022 — the Russia FX-reserve freeze converted slow-diversification into urgent-diversification. Three consecutive years of ~1,000 tonnes/yr CB demand vs the pre-2022 norm around 400-600 tonnes.
Methodology
The Geopolitical Alpha Index measures the width of the specific-access premium priced into durable-edge assets — the alpha available in pillar-specific plays (regional crude, politically-neutral reserves, offshore dollar rails) vs the fading generic-access baseline of the 1991–2020 globalization regime.
Three orthogonal axes capture three channels of the repricing:
| Component | Proxy | What it measures |
|---|---|---|
| Geopolitical risk | Caldara-Iacoviello GPR monthly level | The 40-year canonical gauge of regime-level geopolitical stress, constructed from newspaper-text mining |
| Energy regional dispersion | Brent − WTI monthly spread | Width of geography-as-alpha in crude — how much of oil pricing is regional-access rather than fungible benchmark |
| Unexplained gold | Residual of 12m log-gold returns on 12m real-yield change (expanding-window OLS) | When gold rallies more than real yields imply, the two-book regime is live: the CB / politically-neutral book, not the ETF / macro-hedge book, is setting price |
Z-score convention. Walk-forward (expanding-window) z, minimum 60 months, ±4σ winsor — same discipline as Fiscal Dominance, Shadow Dollar, and Dollar Hegemony composites. The z at date $T$ uses only data through $T$.
Composite. $z^{\text{GAI}}_t = \tfrac{1}{3}\sum_i z^{i}_t$ — equal-weight.
Regime bands (composite percentile within its expanding-window history):
- < 20 → Generic Access Regime — oil is one price, gold tracks real yields, geopolitics is headline not regime
- 20–40 → GP Alpha Soft — generic-access pricing mostly intact
- 40–60 → GP Alpha Neutral — mixed regime
- 60–80 → GP Alpha Elevated — specific-access premium widening
- ≥ 80 → GP Alpha Acute — specific-access premium at regime-extreme; two or more axes compounding
Vintage discipline
The GPR component uses vendor-published (revised) values. The Caldara-Iacoviello team does not publicly archive first-release vintages for this series, so GPR is the one component in this composite where strict ALFRED-style vintage discipline is not available. The caveat is surfaced in the snapshot; the other two components (Brent/WTI, real yields, gold) use ALFRED first-release where applicable.
Canon
Caldara & Iacoviello (2022, AER) — GPR index construction; Kilian (2009, AER) — oil-market structural decomposition (reused in the Energy page); Bordo & McCauley (2019) — central-bank reserve composition and geopolitical alignment; Farhi & Maggiori (2018, QJE) — theory of the dollar-hegemon / reserve-currency mechanism that the CB gold book is repricing against.