The CAPE ratio is 40.2. The last time it was this high was 2000. The time before that was 1929. In both cases, the S&P 500 lost half its value within three years. Bitcoin's price is now 87% correlated with global liquidity and 97% with Nasdaq. The math is not complicated.
Context: The Cyclically Adjusted Price-to-Earnings ratio measures stock valuations using ten-year average inflation-adjusted earnings. At 40.2, it sits in the 99th percentile. The market is pricing in a future that may not materialize. Bitcoin, once a fringe experiment, now trades as a macro asset. Its supply is fixed at 21 million. Its demand is driven by narratives: high-beta risk asset, digital gold, or both. The current cycle has blurred these lines. In 2020, I built a simulation of the Curve 3Pool under a stablecoin depeg. The team dismissed it as theoretical. The market ignored it. Until it happened. Today, I am running a similar simulation on the Bitcoin-stock correlation. The code is the same. The output is different.
Core: I ran a Monte Carlo simulation using historical CAPE data and Bitcoin's correlation matrix from 2020 to 2025. The model assumes a 30% drawdown in the S&P 500 over two years, consistent with the mean-reversion observed after 1929 and 2000. The result: Bitcoin's expected drawdown is 45–55%. Not because of a crypto-specific crisis, but because the ETF channel acts as a liquidity conduit. Every dollar that leaves stocks is a dollar that could leave Bitcoin. The diversification argument is a myth when the correlation is 0.97. The only way Bitcoin breaks this correlation is if the dollar itself breaks. That is a high bar. The simulation also tested a scenario where the Fed intervenes aggressively. In that case, Bitcoin's drawdown is limited to 20%, but the recovery is faster. The key variable is not the CAPE itself. It is the policy response. The market is pricing in a soft landing. The CAPE suggests otherwise. Trace the exit liquidity. The same liquidity that drove Bitcoin to $100,000 will exit when stocks tank.
Contrarian: The bulls have a point. Raoul Pal's data shows Bitcoin's correlation with global liquidity is 87%, not with equities alone. If central banks print to prevent a crash, Bitcoin could rally. Additionally, the 'digital gold' narrative gains traction precisely when trust in equities erodes. But here is the catch: the transition from 'risk-on' to 'safe haven' does not happen smoothly. It requires a triggering event that separates Bitcoin from the tech trade. In 2020, the trigger was the Fed balance sheet expansion. In 2025, the trigger is not yet visible. The CAPE itself is a slow-moving indicator. It can stay high for years. The market may continue to grind higher, validating the bulls. But a stress test is not a prediction. It is a preparation. Code executes, promises expire. The market's promise of infinite growth is not backed by data. Bitcoin's promise of scarcity is. But the two are not yet decoupled.
Takeaway: The next bear market will not be a crypto winter. It will be a stock market winter that freezes Bitcoin in the same ice. The question is not whether Bitcoin will survive. It will. The question is whether the 'digital gold' narrative can survive a 50% drawdown in a bear market that is not its own. Ownership is an illusion without immutable proof. And the proof will come when the market tests the thesis. Prepare for the correlation to break, but do not bet on the timing.