Looking only at dollar prices, Bitcoin appears caught in another brutal crypto winter — nearly halved from its October all-time high of $126,000 to $66,000. Meanwhile, the S&P 500 hovers near a record 7,511 points. Peel back the nominal layer, and something else emerges.
BTC/M2 Ratio: A Head-and-Shoulders Warning
When Bitcoin's price is adjusted for U.S. M2 money supply — the Fed's measure of liquid assets including cash, checking and savings deposits, money market funds, and CDs — the BTC/M2 ratio, after a sharp rally from 2023 through early 2025, now appears to have formed a head-and-shoulders pattern, typically a bearish signal. If the pattern holds, Bitcoin's exponential edge over debasement — the very dynamic that let it outrun dollar erosion so convincingly in previous cycles — is fading. The ability to outperform new money creation may be approaching diminishing returns, at least for now.
This matters beyond crypto. Bitcoin has at times moved ahead of broader macro turns. If its monetary valuation is genuinely losing ground to M2 growth, it could be an early warning that risk appetite is losing steam.
S&P 500: A Quarter-Century of Money Printing, Back Where It Started
The S&P 500's money-supply-adjusted chart tells a different story from its nominal price. The index currently sits near a nominal record of 7,511, far above its 2000 peak of around 1,500. But after adjusting for two decades of M2 expansion, the S&P 500 has only recently reclaimed that dot-com-era high. Corporate earnings today are indeed stronger and more durable than in 1999-2000, so it's not an identical bubble. Still, the implication is stark: it took 25 years of money supply growth just to get the index's inflation-adjusted valuation back to where it stood at the height of the dot-com bubble. Every new dollar added to the system has had to work harder for a relatively smaller marginal gain.
When the marginal efficiency of money supply wanes, price levels built on liquidity may not hold. Bitcoin's monetary-adjusted chart has already flashed a warning, and the S&P 500's nominal rally may rest on a thinner foundation than it appears.