Stock-to-Flow (S2F) is a way of modelling assets such as gold, silver, platinum, and Bitcoin to help predict future prices.
PlanB, an ex-institutional investor, is best known for applying this model to Bitcoin 5 or 6 years ago. The published chart has predicted the Bitcoin price very well ever since, especially at the halvings – when price has always touched the S2F line. Currently, the S2F model indicates a November 2025 price for Bitcoin of >$500,000.
Synonyms:
S2F