What M2 is
M2 is a standard measure of the money supply. It counts the most spendable money in an economy: physical cash and current accounts (that narrower part is M1), plus savings deposits, money-market balances and other near-money that can be turned into spending fairly quickly. Central banks and statistics offices publish it for their own currency — US M2, euro-area M2, Japan’s money stock, and so on.
"Global M2" is what you get when you add those national figures together and convert them into one currency, usually the US dollar. Because the conversion uses moving exchange rates, global M2 wiggles from week to week even when the underlying quantities barely change — a detail worth remembering when a chart looks dramatic.
Why people chart Bitcoin against M2
The idea is simple: Bitcoin is a risk asset with no earnings, so its price depends heavily on how much money is looking for a home. M2 is a broad gauge of how much money exists. Plot one against the other and, over the last cycle, they have often risen and fallen together — which is why "Bitcoin vs. M2" became such a popular chart.
That visual co-movement is real, but it is a correlation over a specific, fairly short history, not a law. Two lines that both trend upward for years will look related whether or not one drives the other. The honest reading is that global money is part of the backdrop Bitcoin trades against — one input among many, not a lever that sets the price.
M2 vs. central-bank liquidity — not the same thing
M2 measures money held by the public: deposits, savings, near-money. Central-bank liquidity measures something narrower and more upstream — the money central banks themselves have put into the financial system, net of the cash they have drained back out through tools like reverse repo or a government’s account. The two move together often but not always, and they can diverge for months.
BIKENZO’s gold line is the central-bank-liquidity measure, not M2. The reason is that central-bank liquidity sits closer to the tap: it is the money being added or withdrawn at the source, before it filters out into deposits. M2 is a fine, widely-understood proxy — this article exists partly because so many people search for it — but it is a different, downstream number, and conflating the two is a common mistake.
What the comparison cannot tell you
Neither M2 nor central-bank liquidity predicts the Bitcoin price. They describe the monetary tide underneath it. Money can expand while Bitcoin falls, and Bitcoin can rise while money is flat — both have happened. Anyone presenting an M2 chart as a forecast, or as a reason a specific price target is coming, is claiming a certainty the data does not support.
What a liquidity comparison is good for is context: seeing whether the pool of money is growing or draining while you form your own view of a market you understand. BIKENZO plots that tide against the Bitcoin price and gives you the controls to read it. What you conclude, and what you do, is entirely your decision.