存量产量比
存量产量（SF）比率是指当前流通中的加密货币与新供应的加密货币的比值。
Definition
Stock to Flow (SF) Ratio is defined as a ratio of currently circulating coins divided by newly supplied coins.
Interpretation
SF ratio assumes that the scarcity of the coin drives the price of the coin. The analysis on SF ratio is first presented by a pseudonymous Dutch institutional investor who operates under the Twitter account “PlanB”. By looking at SF ratio as a chart, we can spot where the market regime is.
Use Case
Statistical analysis on SF ratio
The original authors claim that the log of SF 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, SF 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%).
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.
Link to Our Data
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