What if FX-hedging costs become prohibitive for Japanese life insurers' vast foreign-bond books?
A widening US-Japan rate gap makes FX-hedging Japanese life insurers' vast foreign-bond books prohibitively costly, forcing unhedged risk or repatriation that dislocates JGB and global bond markets.
how we built this number — every step
The class rate is measured from our dated, sourced event library (decade-normalized Poisson — the full table is public at base_rates.json). The variant’s share within its class is the analyst’s editorial call, published so you can audit it. A wider range means thinner precedent. Full recipe: methodology · scored at Reality Check.
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 (gold) over time vs the crowd's (Polymarket, blue), from the past toward the 1–3 years 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. The gold path is an illustrative reconstruction anchored to today's estimate — real dated events, not a live re-estimate history.
What it would mean
If this plays out, it is a risk-off shock. A widening US-Japan rate gap makes FX-hedging Japanese life insurers' vast foreign-bond books prohibitively costly, forcing unhedged risk or repatriation that dislocates JGB and global bond markets. The trigger decomposes into signed root‑shocks — US dollar (DXY) ▲ · Credit spreads ▲ · Real yields ▲ · Risk-parity deleveraging ▲ — which propagate through our causal graph to the markets below.
If it happens — the markets it would move
Biggest moves first. Projected moves are cascade-model priors; hist A–B% = what comparable past events actually did (measured abnormal returns), and model prior · unmeasured marks markets with no analogue backing yet. Tap any market for its price history.
| Market | Class | Projected move | |
|---|---|---|---|
| 1 | Tech sector XLK 📈 chart | Equity | ▼ -0.8% hist -0.65–+-0.0% · other way +0.09% (n=12) |
| 2 | Nasdaq 100 NDXon Hyperliquid 📈 chart | Index | ▼ -0.8% hist -0.97–-0.03% · other way +0.06% (n=12) |
| 3 | MicroStrategy MSTRon Hyperliquid 📈 chart | Equity | ▼ -0.7% hist -3.92–+0.87% · other way +27.47% (n=12) |
| 4 | Gold XAUon Hyperliquid 📈 chart | Commodity | ▼ -0.6% hist -0.42–+0.46% · other way +0.37% (n=12) |
| 5 | 30y Treasury yield DGS30 📈 chart | Rate | ▲ +5bp hist -6.35–+5.18% · other way +8.8% (n=12) |
| 6 | 10y Treasury yield DGS10 📈 chart | Rate | ▲ +4bp hist -7.35–+6.68% · other way +9.1% (n=12) |
| 7 | S&P 500 SPXon Hyperliquid 📈 chart | Index | ▼ -0.4% hist -0.17–-0.02% · other way +0.04% (n=12) |
| 8 | Bitcoin BTCon Hyperliquid 📈 chart | Crypto | ▼ -0.4% hist -3.02–+1.13% · other way +6.05% (n=11) |
| 9 | US dollar (DXY) DXYon Hyperliquid 📈 chart | FX | ▲ +0.4% hist +0.02–+0.51% · other way +0.89% (n=12) |
| 10 | EUR/USD EURUSDon Hyperliquid 📈 chart | FX | ▼ -0.4% hist -1.02–+0.27% · other way -0.88% (n=12) |
| 11 | Semiconductors SMHon Hyperliquid 📈 chart | Equity | ▼ -0.3% hist -0.62–+1.43% · other way +2.75% (n=12) |
| 12 | High-yield credit HYG 📈 chart | Rate | ▼ -0.3% hist -0.62–+0.03% · other way -0.28% (n=12) |
| 13 | GBP/USD GBPUSDon Hyperliquid 📈 chart | FX | ▼ -0.3% hist -0.23–-0.08% · other way -0.73% (n=12) |
| 14 | Arm ARMon Hyperliquid 📈 chart | Equity | ▼ -0.3% hist -4.09–+1.76% · other way +4.01% (n=10) |
Probable recommendation
Historical precedent — what analogous events actually did
Across 40 analogous events (overlap‑weighted), as abnormal returns — market beta stripped, so it's the event's own effect, not the market backdrop. Shown at 20 days (persistent) and 5 days (immediate); ↺ fades = the two horizons disagree. Confidence = consistency × sample × significance.
| Asset | History says | Abnormal (20d · 5d) | Hit | n | Confidence | vs cascade |
|---|---|---|---|---|---|---|
| KRW KRW | SHORT | -1.6% · 5d -0.1% | 66% | 34 | 0.31 | ✓ matches cascade |
| SPX SPX | LONG | +0.1% · 5d -0.1% ↺ fades | 66% | 40 | 0.30 | ⚠ differs |
| High-yield credit HYG | SHORT | -0.4% · 5d -0.0% | 69% | 33 | 0.30 | ✓ matches cascade |
| XHB XHB | SHORT | -1.0% · 5d -0.2% | 68% | 34 | 0.30 | ✓ matches cascade |
| MSTR MSTR | SHORT | -3.2% · 5d -3.4% | 64% | 35 | 0.23 | ✓ matches cascade |
| ARM ARM | SHORT | -3.8% · 5d -4.8% | 67% | 15 | 0.22 | ✓ matches cascade |
| Gold XAU | LONG | +0.7% · 5d +0.3% | 62% | 35 | 0.21 | ⚠ differs |
| SMH SMH | LONG | +1.4% · 5d -0.7% ↺ fades | 62% | 35 | 0.20 | ⚠ differs |
| AVGO AVGO | LONG | +2.4% · 5d -0.5% ↺ fades | 59% | 27 | 0.16 | ⚠ differs |
| 30y yield DGS30 | SHORT | -8bp · 5d -3bp | 57% | 40 | 0.13 | ⚠ differs |
| AMD AMD | SHORT | -0.0% · 5d -1.7% | 59% | 39 | 0.13 | ✓ matches cascade |
| MU MU | SHORT | -0.2% · 5d -3.9% | 57% | 38 | 0.13 | ✓ matches cascade |
| USDJPY USDJPY | LONG | +0.3% · 5d -0.1% ↺ fades | 56% | 35 | 0.12 | ✓ matches cascade |
| Bitcoin BTC | SHORT | -2.7% · 5d -2.6% | 57% | 19 | 0.10 | ✓ matches cascade |