The Bitcoin Layer

The Bitcoin Layer

TBL Liquidity Cycle Homework: TBL Weekly #156

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Augustine Carrasco
Sep 12, 2025
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Dear Readers,

This past week, we had to take an existential step back to better understand the signal we provide. We want to capitalize on all the work we’ve been doing with TBL Liquidity:

During one of our regular morning calls at TBL this week, Nik expressed the need for a more accurate signal from our TBL Liquidity Cycle, which builds on something we wrote about last Friday:

“Troughs have a range, which makes them hard to detect [...].”

The point here is that the original statistical bands we derived to detect troughs and peaks were okay, but not good enough leading indicators because cycle levels can be different from one year to the next. Take a look at this zoomed-out version of the cycle:

So, how can we properly detect seemingly ever-moving troughs?


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Derivatives

During our call, Nik suggested using derivatives. No, not financial securities, but a literal derivative of our TBL Liquidity Cycle function.

Here’s our definition of a derivative in relation to this article:

  • Our TBL Liquidity Cycle is simply the trailing 30-day nominal change of our raw TBL Liquidity Index (shown in the first chart of this article).

  • A first derivative for our TBL Liquidity Cycle would thus be the rate of change of this rate of change.

  • When our TBL Liquidity Cycle, which itself is a rate of change, turns from ‘decreasing’ to ‘increasing’—even if it is negative territory—the first derivative will turn from negative to positive (refresher diagram below):

So, we went ahead and derived the 1-day change of our TBL Liquidity Cycle, and used that as our derivative function:

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