Vitalik Buterin says Bitcoin stock‑to‑flow model is harmful

Bitcoin hovered near $21,500 on the day, a 5% gain over the previous 24 hours, while Ethereum creator Vitalik Buterin publicly denounced the stock‑to‑flow (S2F) price model as “harmful” and “unfalsifiable” [2]. The critique comes as the model’s long‑term price target of $288,000 by the end of 2024 looks increasingly out of reach after Bitcoin fell to an 18‑month low below $20,000 earlier this year.

What drove the criticism

Buterin’s comments were sparked by Bitcoin’s recent market crash, which left the cryptocurrency trading well below the $100,000‑$110,000 range the S2F model had projected for 2022 [2]. He argued that models promising “certainty and predestination” encourage false confidence and deserve mockery. The criticism echoed a tweet from Ethhub co‑founder Anthony Sassano labeling S2F an “epic failure.”

PlanB, the analyst behind S2F, responded by suggesting the slump merely gave “scapegoats” for failed projects, and defended the model’s earlier performance from March 2019 to March 2022 [2]. He also posited two possibilities: Bitcoin is “extremely undervalued and will bounce back soon,” or the S2F framework will lose relevance.

Model context and alternatives

The original S2F approach links Bitcoin’s scarcity—its existing supply (stock) versus newly minted coins (flow)—to price, assuming each halving (a 50% reduction in new supply every four years) drives value up. Critics note the model’s linear assumption ignores market sentiment, regulatory shifts, and technological changes [3]. An alternative, the LGS‑S2F formula from QuantMario, introduces a logistic growth function to capture diminishing returns of scarcity and incorporates non‑linear dynamics, aiming for a more nuanced price forecast [3].

Both models remain speculative; the S2F curve has already diverged from its projected path, and the newer LGS‑S2F has yet to prove predictive power in live markets.

What to watch

• Bitcoin price breaking above $25,000 could test whether a rebound aligns with any S2F‑based forecasts.
• Upcoming Bitcoin halving events (next expected in 2024) that will further reduce new supply.
• Statements from PlanB or other analysts on the viability of S2F versus alternative models after major market moves.

The debate highlights a broader tension in crypto: whether quantitative scarcity models can reliably guide expectations, or whether they merely fuel hype that collapses when market reality diverges. As Bitcoin’s price steadies above $20,000, the relevance of the stock‑to‑flow framework remains an open question.