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Stock to Flow Ratio

Stock to Flow Ratio is defined as a ratio of currently circulating coins divided by newly supplied coins.


Stock to Flow Ratio is defined as a ratio of currently circulating coins divided by newly supplied coins.
SF Ratio=Currently circulating coinsNewly supplied coins\text{SF Ratio} = \frac{\text{Currently circulating coins}}{\text{Newly supplied coins}}


Stock to Flow Ratio assumes that the scarcity of the coin drives the price of the coin. The Stock to Flow (S2F) Model, is a key metric introduced by the pseudonymous Dutch institutional investor who operates under the Twitter account “PlanB”. This ratio serves as a crucial tool for assessing market dynamics.
When the supply of newly minted coins diminishes, the Stock to Flow Ratio experiences an increase. Similarly, if the number of circulating coins rises, the Stock to Flow Ratio also shows an upward trend.
By analyzing the Stock to Flow Ratio chart, stakeholders can discern shifts in the market regime, providing valuable insights into potential Bitcoin price movements, economic factors and market conditions.
Put simply:
-If Newly supplied coins decrease, Stock to Flow Ratio rises.
-If circulating coins rises, Stock to Flow Ratio rises.

Use Case

Statistical Analysis on Stock to Flow Ratio

The original authors claim that the log of Stock to Flow Ratio is in a linear relationship with the log of the price. We reproduce the results of what they claim and as a result, shown in the figure below, Stock to Flow Ratio and price are in a linear relationship (not perfectly but in some sense) with significant statistics (p-value under 0.01, R-square over 90%).
Stock to Flow Ratio Statistical Analysis
Following the above linear statistics (trend and intercept), we can plot how closely they are related in a time-series manner. With this graph, we can recognize that the current price is in what regime recently.
Regression model of SF ratio to the price

Why is the Bitcoin Stock to Flow Ratio Important?

Bitcoin: Stock-to-Flow Ratio – Source CryptoQuant
The Bitcoin Stock to Flow Ratio, often employed in the stock to flow model, stands as a crucial metric for evaluating the scarcity and potential future value of Bitcoin. Here's why it holds paramount importance in understanding Bitcoin's market dynamics:

Bitcoin's Scarcity and Maximum Supply

As a finite resource, Bitcoin's total supply is capped at 21 million coins, reinforcing its scarcity. The Stock to Flow model quantifies this scarcity by comparing the current stock (existing supply) to the flow (newly mined coins). A higher ratio underscores Bitcoin's rarity, aligning with its reputation as "digital gold."

Predicting Bitcoin's Price

The Stock to Flow Ratio has proven to be a reliable indicator for predicting Bitcoin's price movements. By historically correlating scarcity with value, this metric aids in generating BTC price predictions. Investors and analysts often use it as a tool to anticipate potential market trends and make informed decisions.
Analysts and enthusiasts frequently leverage the Stock to Flow Ratio to formulate Bitcoin price predictions. The model suggests that the decreasing rate of new Bitcoin issuance over time will drive up its value, potentially leading to higher market prices. This predictive aspect enhances its significance for traders and investors seeking insights into future market trends.

Comparative Analysis

The Bitcoin Stock to Flow Ratio allows for comparative analysis not only within the cryptocurrency space but also against traditional assets. Its application extends beyond Bitcoin, serving as a yardstick to measure scarcity and value in various markets. This comparative approach offers a broader perspective on Bitcoin's unique position in the financial landscape.

Factors That Affect the Stock to Flow Model

Several factors influence the Stock to Flow (S/F) Ratio of Bitcoin, impacting its scarcity and, consequently, its potential market value. Here are key factors to consider:
Bitcoin Halving Events: Bitcoin undergoes a halving event approximately every four years, this is an event where the reward for mining new blocks is halved, meaning miners receive 50% fewer bitcoins for verifying transactions. These events play a crucial role in diminishing the flow component of the S/F ratio, as Bitcoin's scarcity increases.
Market Demand: The demand for Bitcoin is a significant driver. Increased demand, often fueled by growing institutional interest or macroeconomic uncertainties, can influence the price of bitcoin, and, consequently, the overall stock to flow dynamics.
Technological Developments: Changes in the underlying technology of Bitcoin, such as upgrades or scalability solutions, can impact its supply dynamics. Technological advancements may influence how transactions are verified and how new bitcoins are issued.
Regulatory Landscape: Regulatory developments and legal clarity around Bitcoin can affect market sentiment. Clear regulations may attract more institutional investors, affecting both demand and the perception of Bitcoin's relative scarcity.

End Notes

In essence, the Stock to Flow Ratio serves as a fundamental metric, encapsulating Bitcoin's intrinsic characteristics and influencing predictions about its future price movements. As a key element in the stock to flow model, it continues to play a pivotal role in shaping discussions around Bitcoin's economic model and its broader implications for the cryptocurrency market.