The 65-Month Global Liquidity Cycle

What if I told you global capital flows follow a rhythm as predictable as the seasons? Not perfectly. Not down to the week. But close enough to give you an edge that 99% of investors completely ignore.

That’s the core finding from Michael Howell’s research at CrossBorder Capital. He’s spent decades tracking global liquidity flows, and the data reveals something remarkable: global liquidity moves in a roughly 65-month cycle. That’s about five and a half years from trough to trough.

And once you see it, you can’t unsee it.

What Is Global Liquidity, Anyway?

Before we talk cycles, let’s get specific. Global liquidity is the total amount of credit and money flowing through the world’s financial system at any given time. It’s not just what the Fed does. It’s what the People’s Bank of China does. The ECB. The Bank of Japan. The Bank of England. All of them, plus the private credit system, all pushing and pulling capital around the globe.

Think of it as the ocean that every asset class swims in. Stocks, bonds, real estate, crypto, commodities. They all float on this ocean. When the tide rises, most boats go up. When it falls, most boats go down. Simple as that.

Howell’s Global Liquidity Index (GLI) attempts to measure this tide. It aggregates central bank balance sheets, cross-border capital flows, private sector credit creation, and collateral values into a single reading. When the GLI is expanding, financial conditions are loose. When it’s contracting, they’re tight.

The Four Phases of the Cycle

The 65-month cycle breaks down into four distinct phases. If you’ve studied business cycles, this will feel familiar. But the timing is more consistent than most people expect.

Phase 1: Trough and Early Expansion. Liquidity has bottomed out. Central banks have been tightening, the global economy is sluggish, and risk assets are beaten down. This is where the smart money starts buying. Credit conditions begin easing. Central banks signal they’re done hiking or start cutting. The turn is quiet. Most people miss it entirely.

Phase 2: Acceleration. Liquidity growth picks up steam. Rate cuts are underway across multiple economies. Credit is expanding. Risk appetite returns. Stocks rally, especially growth and small caps. Emerging markets catch a bid. This is the “everything rally” phase where it feels like you can’t lose.

Phase 3: Peak and Deceleration. Liquidity growth hits its ceiling. Inflation pressures build. Central banks start talking tough again. The cycle is mature. Returns are still positive, but the easy money has been made. This is where most retail investors finally get bullish. Classic.

Phase 4: Contraction. The tide goes out. Central banks tighten. Credit conditions squeeze. Dollar strengthens (more on that in the next article). Risk assets struggle. Volatility spikes. The crowd panics. And the cycle resets.

The whole thing takes roughly 65 months. Give or take. It’s not a clock you can set your watch to, but the pattern has held remarkably well across multiple decades of data.

Why Do Central Banks Move in Sync?

Here’s something most people don’t think about. Central banks are far more coordinated than they admit.

Not in some conspiracy sense. In a practical sense. If the Fed is tightening aggressively and the ECB isn’t, the euro weakens against the dollar. That creates imported inflation in Europe. So the ECB has to follow. Same dynamic plays out across every major economy.

Global trade ties everyone together. When the Fed moves, the People’s Bank of China feels it through capital outflows and dollar-denominated debt pressures. The Bank of Japan feels it through yen weakness. Everyone responds, and the responses create a synchronized global liquidity cycle.

Howell’s data shows that roughly 80% of the movement in global liquidity is driven by this synchronized central bank behavior. The remaining 20% comes from private credit creation and collateral effects.

This is why the cycle is so consistent. It’s not random. It’s structural.

How the Global Liquidity Tracker Maps This

The Global Liquidity Tracker on this platform translates Howell’s framework into something you can actually monitor in real time. It breaks global liquidity into four components, each weighted by its impact on financial conditions.

Central Bank Liquidity (32%) tracks the aggregate balance sheet activity of major central banks. Are they expanding or contracting? By how much?

Private Sector Liquidity (32%) measures credit creation in the private banking system. This is the multiplier effect. Central banks set the conditions, but commercial banks and shadow banks do the heavy lifting.

Credit Spreads (16%) capture how willing the market is to extend credit. Tight spreads mean easy money. Blowing-out spreads mean stress.

Cross-Border Flows (20%) track capital moving between countries. When global liquidity is expanding, capital flows into risk assets and emerging markets. When it contracts, capital retreats to safe havens.

The composite GLI score runs from 0 to 100. Above 60 and conditions are expansionary. Below 40 and they’re restrictive. The direction of the trend matters more than the absolute level.

What This Means for Your Portfolio

You don’t need to trade the liquidity cycle perfectly. You just need to know where you are in it.

In expansion phases, you want exposure to risk assets. Equities over bonds. Growth over value. Small caps over large caps. Emerging markets over developed. The tide lifts everything, so cast a wide net.

In contraction phases, you want defense. Cash, short-duration bonds, quality over junk. Dollar-denominated assets tend to outperform. This isn’t the time to be a hero.

At turning points, you want to be early. The trough is the best buying opportunity of the cycle. The peak is the best time to take profits. Neither feels good in the moment. At the trough, everyone is bearish. At the peak, everyone is euphoric.

That’s the whole game. Know the cycle. Position accordingly. Tune out the noise.

The market wants you to think everything is random and unpredictable. It’s not. The liquidity cycle gives you a map. It won’t tell you what happens tomorrow. But it’ll tell you which season you’re in. And that’s worth more than most people realize.