Bitcoin News: Bitcoin's BTC/M2 Ratio Just Flashed a Head-and-Shoulders Warning — and the S&P 500's M2-Adjusted Chart Looks Even More Troubling

If you are only looking at the dollar price of your portfolio, you may be missing the part of the picture that is significantly shaped by money supply growth.
To the casual observer, markets look like business as usual. Bitcoin has nearly halved to $66,000 since its $126,000 October peak — easily dismissed as another brutal quadrennial crypto bear market. The S&P 500 continues to hover near record highs above 7,500 points. Nothing unusual.
But beneath the surface, a more interesting and concerning signal emerges when both prices are adjusted for the US M2 money supply — the Federal Reserve's measure of liquid assets including cash, checking and savings deposits, money market funds, and certificates of deposit. M2 measures, in effect, how many dollars exist in the system at any given time. Adjusting asset prices for M2 growth reveals what those prices look like relative to the expanding supply of money rather than in nominal terms alone.
Bitcoin's BTC/M2 ratio: a head-and-shoulders warning
Some observers treat Bitcoin as a high-beta barometer for dollar liquidity — an asset whose price reflects not just its own supply and demand dynamics but the broader expansion and contraction of the dollar supply. On that basis, the BTC/M2 ratio — Bitcoin's price adjusted for money supply growth — has been one of the most watched long-term signals in crypto analysis.
After a sharp climb from 2023 through 2025, the BTC/M2 ratio appears to have formed what technical analysts call a head-and-shoulders pattern — classically interpreted as a bearish reversal signal. If the pattern holds, it would suggest that Bitcoin's exponential edge over money supply growth — the dynamic that allowed it to outrun currency debasement so convincingly in prior cycles — is fading, at least for now.

This matters more than it might initially appear. Bitcoin's value proposition as a scarce, fixed-supply asset has always rested partly on its ability to outpace the money printer over time. If the BTC/M2 ratio is forming a structural top, it would suggest that each new dollar added to the system is no longer being outrun by Bitcoin's price appreciation at the same rate as in prior cycles — a potential signal of diminishing marginal returns from the debasement trade that has underpinned Bitcoin's bull case for retail and institutional investors alike.
The S&P 500 in M2 terms: a quarter century of money printing to reclaim the dot-com peak
The S&P 500's money-supply-adjusted story is equally striking. In nominal terms, the index currently hovers near a record high of 7,511 — well above its year-2000 peak of approximately 1,500 points and seemingly in a different universe from the dot-com bubble's heights.

 
Adjusted for two decades of M2 growth, however, the S&P 500 has only recently reclaimed that year-2000 high in real monetary terms. In other words: it took 25 years of continuous money supply expansion for the index to get its inflation-adjusted valuation back to where it stood at the peak of the dot-com bubble.
This does not necessarily mean equities are as overextended as they were in 1999-2000 — corporate earnings today are generally considered stronger, more diversified, and more durable than the largely revenue-free dot-com companies that dominated the late 1990s index. But on this specific money-supply-adjusted basis, the math is sobering: every new dollar added to the financial system over the past quarter century has had to work harder for a relatively smaller marginal gain in equity valuation. The nominal record highs are real, but the monetary-adjusted gains are considerably more modest.
What the two signals say together
The combination of Bitcoin's BTC/M2 head-and-shoulders pattern and the S&P 500's stretched monetary valuation points toward the same underlying dynamic: the global financial system has expanded the money supply so substantially over the past two decades that nominal asset price gains increasingly reflect monetary expansion rather than genuine value creation. When both the most liquidity-sensitive risk asset in the world (Bitcoin) and the benchmark for global equities (S&P 500) show signs of struggle in M2-adjusted terms simultaneously, the signal is worth taking seriously.
Bitcoin has at times functioned as a leading indicator for broader macro turns — moving ahead of equity market inflections by weeks or months. If Bitcoin's monetary valuation is genuinely losing ground to M2 growth and forming a structural bearish pattern, it could be an early warning that the S&P 500's nominal gains rest on a thinner foundation than their record-high price suggests.
Whether that translates into actual near-term weakness for equities remains an open question — and this framework should be considered alongside the more immediate catalysts (US-Iran peace deal, FOMC meeting, BOJ decision, Geneva signing) that are driving day-to-day market action this week. But when the most liquidity-sensitive asset in the room shows structural signs of losing its battle against dollar supply growth, it is at minimum worth a moment of caution for the rest of the risk-on world, according to CoinDesk.