What is the Central Bank Liquidity?
Global central bank liquidity is one of the most powerful forces in modern markets. When the Federal Reserve, European Central Bank and Bank of Japan expand their balance sheets through quantitative easing, that newly created money flows into financial assets, lifting equities, bonds and real estate alike. When they shrink balance sheets through quantitative tightening, the tide goes out and risk assets typically struggle. This index sums the total assets held by the three largest central banks and expresses the figure in trillions of US dollars, giving a single number that captures the global monetary backdrop. A rising index signals abundant liquidity and a supportive environment for risk-taking; a falling index warns of tightening financial conditions. Since the 2008 financial crisis, the correlation between aggregate central bank balance sheets and global equity valuations has been striking, which is why professional investors watch this metric closely as a leading gauge of market direction.
Formula & Methodology
Created by Modern macro-liquidity analysis (post-2008 QE era).
Historical Performance & Limitations
Liquidity is a backdrop, not a timing tool. Balance sheets can expand while markets fall (early 2020) and contract while markets rise, because expectations and fiscal policy also matter. Currency conversion introduces noise, and the index says nothing about where liquidity actually flows.
Status Classification
| Level | Meaning |
|---|---|
| Strong Undervaluation | Market trading significantly below historical average |
| Fair Value | Market aligned with historical valuation metrics |
| Moderate Overvaluation | Market elevated above historical norms |
| Severely Overvalued | Extreme historical deviation; high downside risk |