What if the ECB cuts rates deeply negative again?
A deflationary bust dragging the ECB to -1% revives tiering and crushes bank NIMs; front-end and real yields fall, EUR softens on rate differentials and duration-sensitive risk catches a bid. This is the 2014-2019 ECB NIRP playbook taken to an extreme, when negative rates squeezed European bank profitability for years. Trade is steepeners and long duration; the bank-equity damage from NIM compression is the cleaner short than the broad risk-on tag suggests.
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-on shock. A deflationary bust forces the ECB to cut to minus-1%, reviving tiering schemes and squeezing bank net-interest margins. The trigger decomposes into signed root‑shocks — Fed policy path ▼ · Recession signal ▲ — 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 | MicroStrategy MSTRon Hyperliquid 📈 chart | Equity | ▲ +1.1% hist -1.07–+4.26% · other way +5.93% (n=11) |
| 2 | Solana SOLon Hyperliquid 📈 chart | Crypto | ▲ +0.7% hist -5.13–+1.39% · other way -5.21% (n=11) |
| 3 | Tech sector XLK 📈 chart | Equity | ▲ +0.7% hist -0.33–+2.0% · other way -0.31% (n=11) |
| 4 | Gold XAUon Hyperliquid 📈 chart | Commodity | ▲ +0.7% hist -0.2–+1.47% · other way +2.39% (n=11) |
| 5 | Bitcoin BTCon Hyperliquid 📈 chart | Crypto | ▲ +0.7% hist -3.82–+1.58% · other way +0.34% (n=11) |
| 6 | Nasdaq 100 NDXon Hyperliquid 📈 chart | Index | ▲ +0.6% hist -0.28–+1.37% · other way -0.49% (n=11) |
| 7 | US dollar (DXY) DXYon Hyperliquid 📈 chart | FX | ▼ -0.5% hist -0.63–-0.04% · other way +0.92% (n=12) |
| 8 | Ether ETHon Hyperliquid 📈 chart | Crypto | ▲ +0.5% hist -9.05–+2.64% · other way -1.19% (n=11) |
| 9 | USD/JPY USDJPYon Hyperliquid 📈 chart | FX | ▼ -0.5% hist -0.79–+0.06% · other way +1.58% (n=11) |
| 10 | 2y Treasury yield DGS2 | Rate | ▼ -6bp model prior · unmeasured |
| 11 | 30y Treasury yield DGS30 📈 chart | Rate | ▼ -5bp hist -3.54–+1.3% · other way +25.2% (n=12) |
| 12 | Hyperliquid (HYPE) HYPEon Hyperliquid | Crypto | ▲ +0.5% model prior · unmeasured |
| 13 | 10y Treasury yield DGS10 📈 chart | Rate | ▼ -5bp hist -3.31–+0.52% · other way +30.6% (n=12) |
| 14 | EUR/USD EURUSDon Hyperliquid 📈 chart | FX | ▲ +0.5% hist +0.06–+0.51% · other way -0.49% (n=11) |
Probable recommendation
Why we may diverge from history
Trust history's SHORT on HOOD: only n=4, but the -32% lira-2021 rate-cut analogue is exactly on-channel — deep-negative ECB rates crush broker net-interest economics; the cascade's LONG over-reaches on a stale easing-equals-risk-on reflex.
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 |
|---|---|---|---|---|---|---|
| SPX SPX | LONG | +1.1% · 5d -0.1% ↺ fades | 70% | 40 | 0.38 | ✓ matches cascade |
| SOL SOL | SHORT | -4.7% · 5d -5.4% | 68% | 36 | 0.31 | ⚠ differs |
| ARM ARM | SHORT | -4.8% · 5d -5.6% | 70% | 23 | 0.28 | ⚠ differs |
| MU MU | SHORT | -2.7% · 5d -2.4% | 66% | 40 | 0.26 | ⚠ differs |
| US dollar DXY | SHORT | -0.3% · 5d -0.1% | 64% | 40 | 0.25 | ✓ matches cascade |
| ETH ETH | SHORT | -8.2% · 5d -5.1% | 66% | 36 | 0.24 | ⚠ differs |
| XLK XLK | LONG | +1.5% · 5d +0.0% | 61% | 40 | 0.20 | ✓ matches cascade |
| EURUSD EURUSD | LONG | +0.2% · 5d +0.0% | 62% | 39 | 0.20 | ✓ matches cascade |
| XHB XHB | SHORT | -1.4% · 5d -1.3% | 62% | 39 | 0.20 | ⚠ differs |
| Bitcoin BTC | SHORT | -3.8% · 5d -2.5% | 62% | 37 | 0.18 | ⚠ differs |
| TRY TRY | SHORT | -3.6% · 5d +0.2% ↺ fades | 60% | 39 | 0.18 | ⚠ differs |
| GBPUSD GBPUSD | LONG | +0.3% · 5d -0.1% ↺ fades | 60% | 39 | 0.16 | ✓ matches cascade |
| 30y yield DGS30 | LONG | +3bp · 5d +2bp | 59% | 40 | 0.15 | ⚠ differs |
| Gold XAU | LONG | +1.0% · 5d +0.0% | 59% | 40 | 0.14 | ✓ matches cascade |
Why this probability
ECB easing but -1% deflationary bust improbable; inflation near target, no deflation impulse. A base‑rate‑anchored prior, continuously scored against what actually happens — not a forecast.