What if the Treasury exhausts its extraordinary measures at the X-date?
Hitting the X-date with no deal stresses the front end specifically — T-bills maturing around the date cheapen sharply while the broad market mostly shrugs, since default is viewed as a political near-miss. Rhymes with the 2011 and 2023 debt-ceiling standoffs, where bill kinks blew out but equities only wobbled and snapped back on resolution. The transmission is money-market funds avoiding at-risk bills; the forward read is that a true breach (vs. brinkmanship) is unpriced — the modeled moves here are appropriately modest.
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 0–6 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. 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. Treasury exhausts extraordinary measures with X-date reached and no debt-limit deal in sight. The trigger decomposes into signed root‑shocks — Volatility (VIX) ▲ · Credit spreads ▲ — 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 | Volatility (VIX) VIXon Hyperliquid 📈 chart | Vol | ▲ +0.9% hist -0.38–+0.68% · other way -0.58% (n=12) |
| 2 | High-yield credit HYG 📈 chart | Rate | ▼ -0.6% hist -0.72–-0.02% · other way -0.28% (n=12) |
| 3 | Financials XLF 📈 chart | Equity | ▼ -0.4% hist -1.57–+0.36% · other way +0.01% (n=12) |
| 4 | MicroStrategy MSTRon Hyperliquid 📈 chart | Equity | ▼ -0.4% hist -2.96–+0.78% · other way +27.47% (n=12) |
| 5 | Nasdaq 100 NDXon Hyperliquid 📈 chart | Index | ▼ -0.3% hist -0.22–-0.13% · other way +0.06% (n=12) |
| 6 | JPMorgan JPM 📈 chart | Equity | ▼ -0.3% hist -1.0–+0.18% · other way +2.16% (n=12) |
| 7 | S&P 500 SPXon Hyperliquid 📈 chart | Index | ▼ -0.3% hist -0.45–+0.02% · other way +0.04% (n=12) |
| 8 | Bitcoin BTCon Hyperliquid 📈 chart | Crypto | ▼ -0.2% hist -1.13–+1.65% · other way +6.05% (n=11) |
| 9 | Tech sector XLK 📈 chart | Equity | ▼ -0.2% hist -0.44–+0.57% · other way +0.09% (n=12) |
Probable recommendation
Why we may diverge from history
Trust the cascade's SHORT on MSTR: +6% realized leans on 2023 SVB/Signature windows when BTC was structurally bid; BTC swamps any X-date debt-ceiling channel, so history is regime-biased here.
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 |
|---|---|---|---|---|---|---|
| High-yield credit HYG | SHORT | -0.4% · 5d -0.3% | 63% | 34 | 0.22 | ✓ matches cascade |
| JPM JPM | SHORT | -0.8% · 5d -1.5% | 61% | 40 | 0.20 | ✓ matches cascade |
| MSTR MSTR | SHORT | -2.5% · 5d -2.9% | 62% | 37 | 0.19 | ✓ matches cascade |
| XLF XLF | SHORT | -1.3% · 5d -1.3% | 59% | 37 | 0.18 | ✓ matches cascade |
| Gold XAU | LONG | +1.3% · 5d +0.4% | 58% | 37 | 0.15 | · |
| Volatility VIX | SHORT | -0.7% · 5d +5.5% ↺ fades | 56% | 38 | 0.12 | ⚠ differs |
| Bitcoin BTC | LONG | +1.8% · 5d -2.8% ↺ fades | 56% | 16 | 0.10 | ⚠ differs |
| US dollar DXY | LONG | +0.3% · 5d +0.1% | 55% | 40 | 0.08 | · |
| XLK XLK | LONG | +0.7% · 5d -0.3% ↺ fades | 51% | 37 | 0.01 | ⚠ differs |
| 10y yield DGS10 | SHORT | -12bp · 5d -4bp | 51% | 40 | 0.01 | · |
| NDX NDX | SHORT | +-0.0% · 5d -1.2% | 48% | 39 | 0.00 | ✓ matches cascade |
| SPX SPX | SHORT | -0.3% · 5d -0.3% | 40% | 40 | 0.00 | ✓ matches cascade |
Why this probability
X-date reached with no deal is rare; deals nearly always strike last-minute despite brinkmanship. A base‑rate‑anchored prior, continuously scored against what actually happens — not a forecast.