What if AMD seizes more than 20% of the accelerator market?
AMD past 20% accelerator share forcing Nvidia margins below 80% is a share-shift, not a TAM event — bullish AMD, mild negative for Nvidia pricing, broadly neutral for the complex. Rhymes with AMD's 2017-19 EPYC server-share gains that compressed Intel margins without shrinking the market. Skeptic's note: the cascade is thin (only TSMC) and correct — this is a relative-value pair (long AMD / short Nvidia margins), not a directional semi trade.
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 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. 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 mixed shock. AMD's MI450 ramp pushes data-center GPU share past 20%, forcing Nvidia's first gross-margin compression below 80%. The trigger decomposes into signed root‑shocks — AI capex ▲ · Semiconductor supply risk ▲ — 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 | TSMC TSMon Hyperliquid 📈 chart | Equity | ▼ -0.5% hist -0.37–-0.12% |
| 2 | Broadcom AVGOon Hyperliquid 📈 chart | Equity | ▲ +0.2% hist -0.51–+0.27% |
| 3 | ASML ASMLon Hyperliquid 📈 chart | Equity | ▼ -0.2% hist -0.96–+0.27% |
| 4 | Micron MUon Hyperliquid 📈 chart | Equity | ▲ +0.2% hist -2.51–+1.12% |
Probable recommendation
Why we may diverge from history
Trust history SHORT MU/AVGO: recent on-channel chip windows (Taiwan-defense, Marvell, DeepSeek) realized -4 to -17% with high hit-rate; the cascade's LONG on AMD-share-gain overstates memory/broadcom upside.
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 |
|---|---|---|---|---|---|---|
| US dollar DXY | SHORT | -0.2% · 5d +-0.0% | 64% | 40 | 0.22 | · |
| Gold XAU | LONG | +1.1% · 5d -0.5% ↺ fades | 64% | 40 | 0.21 | · |
| AVGO AVGO | SHORT | -0.6% · 5d -2.8% | 60% | 39 | 0.19 | ⚠ differs |
| ASML ASML | SHORT | -0.8% · 5d -2.2% | 57% | 40 | 0.11 | ✓ matches cascade |
| 10y yield DGS10 | LONG | +3bp · 5d +1bp | 57% | 40 | 0.11 | · |
| MU MU | SHORT | -2.5% · 5d -3.5% | 57% | 40 | 0.10 | ⚠ differs |
| High-yield credit HYG | SHORT | -0.1% · 5d +0.2% ↺ fades | 56% | 39 | 0.09 | · |
| TSM TSM | SHORT | -0.1% · 5d -1.3% | 55% | 40 | 0.08 | ✓ matches cascade |
| Volatility VIX | LONG | +2.5% · 5d -0.0% ↺ fades | 52% | 40 | 0.04 | · |
| Bitcoin BTC | LONG | +2.8% · 5d -1.4% ↺ fades | 45% | 36 | 0.00 | · |
Why this probability
AMD MI450 ramping but 20% share + sub-80% Nvidia margin is a high, specific bar. A base‑rate‑anchored prior, continuously scored against what actually happens — not a forecast.