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The Bitcoin Stock-to-Flow (S2F) model, developed by Plan B, predicts a Bitcoin price of $100,000 in June, potentially marking a bull cycle top.
The Stock-to-Flow (S2F) ratio, a widely recognized Bitcoin valuation model, projects a Bitcoin price of $100,000 by June, which its creator suggests could signal the peak of the current bull market cycle [1]. This model, developed by the pseudonymous analyst Plan B, bases its predictions on the principle that scarcity drives value, a concept applied to Bitcoin's halving events [1].
| At a glance | |
|---|---|
| Model's Price Target | $100,000 [1] |
| Predicted Timeline | June [1] |
| Underlying Principle | Scarcity creates value [1] |
| Catalyst | Bitcoin halving events [1] |
The S2F ratio is calculated by dividing the existing supply of a commodity by its newly issued supply [1]. For Bitcoin, this means comparing the total circulating supply to the amount of new Bitcoin minted. A higher S2F ratio, resulting from lower new issuance, is theorized to correlate with a higher asset value [1]. Bitcoin's issuance rate is halved approximately every four years, a mechanism the S2F model uses to justify its price predictions [1].
The model has historically shown accuracy in predicting Bitcoin's price movements [1]. However, its predictive power for future market tops is viewed with caution by some analysts, who note that in previous bull markets, Bitcoin prices have "shot way above its price targets" [1].
While S2F is prominent, other on-chain indicators offer different perspectives on market sentiment and potential cycle tops. The Net Unrealized Profit/Loss (NUPL) indicator, which measures the difference between relative unrealized profit and loss, is currently in a "belief" phase, according to recent analysis [1]. This indicator has historically moved through stages from "capitulation" (red) to "euphoria" (blue), with the blue stage often preceding a market top [1].
Another metric, the Percent of Bitcoin Supply in Profit (PBSP), indicates that 97% of all circulating Bitcoin is currently held at a profit [1]. While high percentages are common in bull markets, especially near all-time highs, the PBSP is considered more useful for identifying local tops rather than overall cycle peaks [1].
The Reserve Risk indicator assesses the confidence of long-term Bitcoin holders relative to price [1]. A green area on this indicator suggests high confidence at low prices, while a red area has historically indicated a potential market top [1]. Currently, the market is "far away" from a red area scenario [1].
The Puell Multiple, calculated by dividing Bitcoin's daily issuance value by its 365-day moving average, can also signal potential tops when it crosses a certain threshold, such as four [1]. This means the daily issuance value is four times higher than its annual moving average [1].
While the S2F model provides a specific price target, the broader market sentiment and the timing of a cycle top remain subjects of ongoing analysis, with various indicators offering different insights into the market's position.
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AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 2 outlets · Aug 21, 2026 · How we report
It is a mathematical ratio calculated by dividing the total existing supply of an asset (stock) by the amount of new supply produced annually (flow).
Halving events reduce the block reward for miners by 50%, which lowers the annual flow of new Bitcoin and increases the S2F ratio, theoretically signaling higher scarcity.
While it was influential in earlier cycles, its predictive accuracy has weakened as Bitcoin's price has frequently deviated from the model's projections, leading many to use it as a historical reference instead.
The model is applied because Bitcoin has a limited, code-defined supply schedule, making it comparable to scarce physical commodities like gold.