Bitcoin Cyclicality
🗒️ Description
The evergreen framework for how Bitcoin has historically moved in ~4-year cycles anchored to the halving — the mechanism, the four market phases, the historical statistics, the on-chain indicators people use to locate themselves in the cycle, and the open debate over whether the cycle still works in the ETF/institutional era.
This is the framework note. For the live market photo, see Crypto Market State 2026. For the universal mechanics of bear markets, phases, and psychology across all asset classes, see Bear Markets — 100 Years of History — this note is the crypto-specific instance of that same machine.
Central thesis, borrowed from the bear-market note and equally true here: you cannot predict the moment, but you can prepare. The reasons rhyme; the calendar doesn’t repeat on command. Numbers below are approximate — crypto prices vary by exchange and by intraday vs closing, and I flag ranges where sources disagree. Educational only, not investment advice.
A note on my own bias: I hold mainly Bitcoin, passively, and run a 4-year-cycle, take-profit strategy — accumulate in the bear, trim into euphoria, never try to nail the exact top. In the Polish crypto-education scene this philosophy is associated with educators like Phil Konieczny; I follow a similar broad approach. My own version is in My Crypto Strategy, and the mistakes that taught it to me in What mistakes I made on the crypto market in 2021-2022.
🔗 Links
- 🧩 Part I — The Halving Mechanism
- 🧩 Part II — The Four Cycle Phases
- 🧩 Part III — Historical Cycle Statistics
- 🧩 Part IV — Diminishing Returns
- 🧩 Part V — On-Chain & Cycle Indicators — a Compass, Not a Clock
- 🧩 Part VI — Is the 4-Year Cycle Dead?
- 🧩 Part VII — ETH and the Cycle
- 🧩 Part VIII — A Cycle Investor’s Playbook
- 🧩 Glossary
🧩 Part I — The Halving Mechanism
Bitcoin’s monetary policy is fixed in code. New BTC enters circulation as a block subsidy paid to miners. Every 210,000 blocks — at ~10 minutes per block, roughly every four years — that subsidy halves. This is the “halving” (or “halvening”).
| Halving | Date (approx.) | Block reward | Annual issuance after | BTC price near event |
|---|---|---|---|---|
| Genesis | 2009-01 | 50 BTC | — | ~$0 |
| 1st | 2012-11-28 | 50 → 25 | ~1.31M/yr | ~$12 |
| 2nd | 2016-07-09 | 25 → 12.5 | ~0.66M/yr | ~$650 |
| 3rd | 2020-05-11 | 12.5 → 6.25 | ~0.33M/yr | ~$8,700 |
| 4th | 2024-04-19/20 | 6.25 → 3.125 | ~0.16M/yr | ~$64,000 |
| 5th | ~2028 (est.) | 3.125 → 1.5625 | ~0.08M/yr | — |
Sources: Bitget Academy, Kraken, Gemini Cryptopedia, VanEck (2024). Dates and reference prices are approximate; the exact halving block matters more than the wall-clock date.
The hard cap is 21M BTC; the last fraction mints around the year 2140. Each halving cuts the new supply hitting the market in half while (historically) demand keeps growing — a recurring supply shock.
The stock-to-flow thesis (and its breakdown)
The scarcity story was formalized by the pseudonymous PlanB as the stock-to-flow (S2F) model: divide existing supply (stock) by annual new issuance (flow); a higher ratio means more scarcity, and the model claimed price tracks that ratio on a log scale. Pre-2024 S2F ≈ 57 (comparable to gold); post-2024 halving it roughly doubled to ≈ 114.
S2F described 2012–2020 strikingly well and then failed: it projected six-figure-and-beyond targets for 2021–22 that never materialized, and the relationship has since drifted. Treat S2F as a narrative for why scarcity matters, not a price oracle. It commits the classic error from Bear Markets — 100 Years of History: confusing a long-run thesis with a timing signal. Issuance is a slow, known, fully-priced-in drip; it does not flip a switch on halving day.
Mechanism summary: the halving is real and matters, but it acts as a gradual tightening of supply growth, not a dated catalyst. Causation is murky — the cycle may be partly halving-driven, partly a self-fulfilling 4-year expectation, and partly just the global liquidity/risk cycle wearing a Bitcoin costume.
🧩 Part II — The Four Cycle Phases
Bitcoin’s cycle maps cleanly onto the classic Wyckoff / Wall Street four-stage model and onto the emotional cycle — the same psychology engine described at length in Bear Markets — 100 Years of History and Investing Psychology.
| Phase | Wyckoff stage | Where in cycle | Dominant emotion | Smart money | Crowd |
|---|---|---|---|---|---|
| 1. Accumulation | Accumulation | late bear / pre-markup | despair → disinterest | quietly buying | gone / disgusted |
| 2. Markup (bull) | Markup | post-halving rise | hope → optimism → euphoria | holding, starting to trim | piling in late |
| 3. Distribution | Distribution | the top region | euphoria → anxiety | selling into strength | ”this time is different” |
| 4. Markdown (bear) | Markdown | the decline | denial → fear → capitulation | waiting with cash | selling at the bottom |
- Accumulation — price is flat and boring near the cycle low. Sentiment is dead, headlines say “crypto is over”. This is where the patient capital builds positions. Emotionally the hardest place to buy; statistically the best.
- Markup — the parabolic-ish rise. Begins quietly, accelerates, and ends in euphoria (leverage, new-money FOMO, “number go up forever”, altcoin mania). Maximum financial risk arrives exactly when everyone feels safest.
- Distribution — the choppy top. Volatile, sideways-to-down, lots of “the dip is a gift” before the real markdown. The actual top is a single day visible only in hindsight.
- Markdown — the bear. Lower highs and lower lows, ~12–24 months of grind, ending in capitulation — forced selling, max pessimism, and the next accumulation zone.
The emotional sequence is repeatable because it stems from human wiring (loss aversion, herding, recency, overconfidence), not from any specific catalyst. You can’t switch these off — you design around them with rules. That is the whole point of a cycle-based plan.
🧩 Part III — Historical Cycle Statistics
The headline numbers per cycle. Prices are approximate, vary by exchange, and round hard — use them as orders of magnitude, not exact records.
| Cycle | Bottom (date / ~price) | Halving (date / ~price) | Top (date / ~price) | Peak gain (bottom→top) | Subsequent bear drawdown |
|---|---|---|---|---|---|
| 2012–13 | ~2012-… / ~$12 (around 1st halving) | 2012-11 / ~$12 | 2013-11-30 / ~$1,150 | ~90×+ | −86% (to ~$152, Jan 2015) |
| 2016–17 | 2015-01 / ~$152 | 2016-07 / ~$650 | 2017-12-17 / ~$19,800 | ~130× | −84% (to ~$3,200, Dec 2018) |
| 2020–21 | 2018-12 / ~$3,200 | 2020-05 / ~$8,700 | 2021-11-10 / ~$69,044 | ~22× | −77% (to ~$15,500, Nov 2022) |
| 2024–? | 2022-11 / ~$15,500 | 2024-04 / ~$64,000 | 2025-10-06 / ~$126,300 (so far) | ~8× | ongoing — shallowest so far (see Part VI) |
Sources: Fidelity (“Bitcoin 4-year cycles”), CoinGecko research, Caleb & Brown, NYDIG, Bitget, hyrotrader. Drawdown figures (−86% / −84% / −77%) are the canonical cycle-bottom drops and are widely cited within ±a few points.
What’s stable across cycles
- Lag from halving to top: ~12–18 months. 2012 halving → Nov 2013 top (~12 mo). 2016 halving → Dec 2017 top (~17 mo). 2020 halving → Nov 2021 top (~18 mo). The 2024 → Oct 2025 top ran ~18 months / ~535 days, in the same neighborhood.
- Bear drawdowns cluster around −80%. −86% (2014), −84% (2018), −77% (2022). Deep, multi-month, ending in capitulation. Any Bitcoin position must be built to survive an ~80% paper loss without forcing a sale.
- Tops form in autumn/late-year; bottoms ~a year later. Loose seasonal rhyme, not a law.
The single most useful number here is −80%. Everything in the playbook (Part VIII) flows from taking that drawdown as a base case for the asset, not a tail risk.
🧩 Part IV — Diminishing Returns
The clearest empirical regularity is that each cycle delivers a smaller multiple than the last:
- Peak gain (bottom→top): ~90×+ (2013) → ~130× (2017, the parabolic exception) → ~22× (2021) → ~8× so far (2025).
- Bear drawdown shrinking: −86% → −84% → −77% → (this cycle materially shallower so far, ~−40–50% range to date).
- Each cycle takes longer and is less explosive — fewer vertical blow-offs, more grind.
The mechanical reason: as market cap grows, moving the price requires ever more capital. A 2T asset cannot do that as easily — the marginal dollar buys less percentage move. Maturation also means more derivatives, more arbitrage, and fewer naive sellers.
Implications: if diminishing returns hold, future cycles offer lower upside and lower downside — Bitcoin behaves more like a maturing macro asset and less like a lottery ticket. This view sits in direct tension with the supercycle hypothesis (Part VI), which argues new structural demand could break the pattern in either direction.
🧩 Part V — On-Chain & Cycle Indicators — a Compass, Not a Clock
Crypto’s native advantage is the public blockchain: you can measure holder behavior directly. People use these to gauge which phase the cycle is in. Same overriding rule as the bear-market note: extremes are contrarian statistically and with a lag — no indicator gives a date.
| Indicator | What it measures | Top signal | Bottom signal | Note |
|---|---|---|---|---|
| MVRV Z-score | market value vs realized value, normalized | Z > ~7 (red zone) | Z near ~0 / negative | historically caught tops within ~2 weeks — past cycles |
| Pi Cycle Top | 111-DMA crossing 350-DMA × 2 | the upward cross = top | n/a (top-only) | called past tops within ~3 days; did not fire cleanly in 2025 |
| 200-week MA | long-run price floor | price far above it | price testing / below it (rare) | bottoms have historically held near it |
| Rainbow Chart | log-regression colour bands | ”sell, seriously” red bands | ”fire sale” blue bands | descriptive heuristic, not rigorous |
| Puell Multiple | daily issuance $ ÷ 365-day avg | > ~3.3 (miner over-profit) | < ~0.5 (miner capitulation) | miner-income proxy |
| Realized price | avg cost basis of all coins | price >> realized | price ≤ realized | aggregate break-even line |
| NUPL | net unrealized profit/loss | ”euphoria/greed” band | ”capitulation” band | whole-market P/L state |
| Fear & Greed (crypto) | composite sentiment | Extreme Greed | Extreme Fear | contrarian at extremes |
Sources: Bitcoin Magazine Pro (MVRV-Z, Pi Cycle), checkonchain, CoinMarketCap cycle indicators, bitbo charts.
Confluence beats any single gauge. A lone red reading is a curiosity; valuation + on-chain + sentiment all maxed at once describes a phase. But even confluence gives no date — the barometer says “low pressure”, not “storm at 2 PM.” And note the 2025 caveat: several historically reliable top indicators (Pi Cycle, classic MVRV thresholds) misfired or fired weakly this cycle, which is itself a data point in the “is the cycle changing?” debate.
🧩 Part VI — Is the 4-Year Cycle Dead?
The live, unresolved debate. I present both sides; I do not forecast.
What changed
- US spot Bitcoin ETFs (Jan 2024). BlackRock, Fidelity et al. opened a regulated, frictionless on-ramp for institutions and advisors. ETF flows routinely move 3.24B (Oct 2025); by some estimates ETF demand has run at ~10–12× daily mining supply. That dwarfs the halving’s supply effect.
- Corporate treasuries (Strategy / MicroStrategy and imitators) and persistent institutional bid replaced the old retail-driven blow-off.
- Macro correlation. Bitcoin increasingly trades with the Nasdaq and global liquidity — a risk asset reacting to rates and Fed balance-sheet, not just to its own halving clock.
The “cycle is dead / evolved” camp
Grayscale, Bitwise, and Fidelity Digital Assets have each argued the structural forces behind the 4-year pattern have weakened. Bernstein and J.P. Morgan have suggested the traditional cycle is broken and the bull is extended. The case: steady institutional demand produces a grind up without a parabolic blow-off, classic top indicators fail, and the bear is far shallower than the −80% norm (this cycle’s drawdown is the shallowest on record so far). The supercycle hypothesis is the strong form: new structural demand swamps the halving, and Bitcoin enters a longer, calmer secular uptrend rather than a 4-year saw-tooth.
The “cycle still works, just muted” camp
The counter-view (AMBCrypto, PANews, and others): the 2025 top still landed ~18 months / ~535 days post-halving, followed by a real drawdown — the shape held, just damped. Diminishing returns predicted exactly this: lower peaks, shallower bears, longer duration. Morgan Stanley and Fidelity (on the bear side) think the 4-year bull simply concluded on schedule. In this read, the cycle isn’t dead — it’s maturing and flattening, exactly as a 14-year-old asset growing into the trillions should.
My honest position: undecided, and I think anyone claiming certainty is selling something. The framework still explains timing, drawdowns, and psychology even if it no longer works as a calendar-based price model. I plan for the cycle to keep rhyming (take profit into euphoria, accumulate in fear) while sizing positions so I survive if it doesn’t — both the supercycle melt-up and the textbook −80% bear. That’s the same discipline-over-prediction stance as Bear Markets — 100 Years of History: prepare for scenarios, don’t bet the strategy on one.
🧩 Part VII — ETH and the Cycle
Ethereum (ETH) and the broader altcoin market are higher-beta echoes of Bitcoin’s cycle: they fall harder in bears and rise harder in bull tops, on a lag.
- ETH/BTC ratio rises when ETH outperforms — historically a precursor to altseason, capital rotating out of BTC into ETH and then down the risk curve into smaller alts.
- The typical sequence: BTC rallies first → BTC dominance stalls/falls (~200–230 days post-halving) → ETH/BTC trends up → capital rotates into alts. In each cycle ETH/BTC tended to chop down for ~3–6 months, then rip for ~3–6 months; sharper declines preceded sharper rallies.
- Practical read: alts top later and crash deeper than BTC. Altseason euphoria is the loudest distribution signal of all — and the most dangerous place to be holding at the cycle turn. (This is precisely where my 2021–22 mistakes happened — see What mistakes I made on the crypto market in 2021-2022.)
🧩 Part VIII — A Cycle Investor’s Playbook
The take-profit, cycle-aware approach in practice. This is the operational core of My Crypto Strategy and aligns with My Investment Strategy.
- Accumulate in the bear / accumulation phase (DCA). Buy a fixed amount at fixed intervals when sentiment is dead and indicators are in the blue/capitulation zones. Mechanically, not by mood. The best buys feel the worst.
- Take profit into distribution / euphoria. Trim in tranches as the market gets greedy and indicators redden — scale out, don’t try to sell the exact top. You cannot recognize the top live; you can sell strength in pieces. This is the heart of the Phil-Konieczny-style 4-year approach.
- Never time the exact top or bottom. Both are invisible in real time and visible only in hindsight. Selling everything to “re-enter lower” is double timing — it fails both ways and usually misses the violent rebound.
- Position for −80% survivability. Treat a deep drawdown as the asset’s base case, not a tail. Size your Bitcoin so that an 80% paper loss is emotionally and financially survivable — no forced selling, no leverage, no rent money. If you couldn’t hold through −80%, your position is too big today.
- Run the stress test. Take your crypto value and compute what’s left after −50%, −65%, −80%. Can I hold without selling? Will I be forced to sell? Do I have dry powder to buy the bottom? Any “no” means trim now.
- Keep it boring. Mostly Bitcoin, passive, no day-trading. The cycle rewards patience and punishes activity — most active traders underperform simply holding.
The biggest cost of a crypto cycle is rarely the drawdown — it’s capitulating near the bottom and returning only after prices have recovered, paying the highest possible price for peace of mind. A written plan is the mast you tie yourself to.
🧩 Glossary
- Halving / halvening — the ~4-yearly 50% cut to the block subsidy, every 210,000 blocks.
- Block subsidy / reward — newly minted BTC paid to the miner of each block (50 → 25 → 12.5 → 6.25 → 3.125 …).
- Stock-to-flow (S2F) — scarcity ratio (existing supply ÷ annual issuance); a narrative for scarcity, not a reliable price model.
- Wyckoff stages — accumulation, markup, distribution, markdown — the four-phase market structure.
- Accumulation / distribution — the basing phase near the bottom / the topping phase where smart money sells into strength.
- MVRV / MVRV Z-score — market value vs realized value; Z-score normalizes it to flag over/undervaluation.
- Realized price — aggregate cost basis of all coins (price each last moved); a market-wide break-even.
- Pi Cycle Top — 111-DMA crossing the 350-DMA × 2; a top-detection heuristic.
- 200-week moving average — long-run price floor; historical bottoms cluster near it.
- Puell Multiple — daily issuance value ÷ its 365-day average; a miner-profitability gauge.
- NUPL — net unrealized profit/loss across all holders; gauges greed vs capitulation.
- Rainbow Chart — log-regression colour bands; a descriptive sentiment heuristic.
- Fear & Greed Index — composite crypto sentiment gauge; contrarian at extremes.
- Altseason — period when altcoins outperform BTC, usually late in the markup phase.
- ETH/BTC ratio — Ethereum priced in Bitcoin; rising = ETH/alts outperforming.
- Supercycle — hypothesis that new structural demand breaks the 4-year saw-tooth into a longer secular uptrend.
- Diminishing returns — the observed shrinking of each cycle’s peak multiple and bear drawdown.
- DCA (dollar-cost averaging) — investing a fixed amount at fixed intervals regardless of price.
- Drawdown — decline from peak to trough, in %.
- Capitulation — phase of max panic and forced selling, usually near the bottom.
📖 Further reading/watching
- Fidelity — “Bitcoin 4-year cycles explained” (learning center)
- CoinGecko Research — “Is the Top In? Bitcoin Peaks 68 Days Earlier Than Last Cycle”
- Caleb & Brown — “Bitcoin’s Market Cycle & Crypto Cycles Chart” and “Is Bitcoin’s Four-Year Cycle Broken?”
- Grayscale Research — “2026 Digital Asset Outlook: Dawn of the Institutional Era”
- Amberdata — “2026 Outlook: The End of the Four-Year Cycle”
- AMBCrypto / PANews — “Is BTC’s 4-year cycle dead?” (the evolved-not-dead case)
- Bitcoin Magazine Pro — MVRV Z-Score & Pi Cycle Top charts; checkonchain.com; bitbo.io charts
- PlanB — original Stock-to-Flow articles (and the body of S2F criticism that followed)
- Related: Bitcoin · Crypto Market State 2026 · Bear Markets — 100 Years of History · Investing Psychology · My Crypto Strategy · My Investment Strategy · What mistakes I made on the crypto market in 2021-2022
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