Bitcoin 4 Year Cycle: Is the Four-Year Cycle Over?
The bitcoin 4 year cycle explained: halvings, past cycle peaks, the Pi Cycle Top indicator, and whether the four-year cycle still works after ETFs.
· 8 min read
The bitcoin 4 year cycle is the idea that Bitcoin's price moves in a rough four-year rhythm tied to the halving, when the reward paid to miners is cut in half. Historically, each halving has been followed by a strong bull market, a blow-off peak, a deep bear market and a long base, before the next halving starts the pattern again. It is one of the most discussed ideas in crypto, and also one of the most debated. This article explains how the cycle works, what signals have marked past peaks, and why many analysts now ask whether the four-year cycle is over.
Key takeaways
- Bitcoin's supply issuance halves roughly every four years (every 210,000 blocks). Past halvings were in 2012, 2016, 2020 and 2024.
- In earlier cycles, major price peaks arrived roughly 12 to 18 months after a halving, followed by bear markets with very large drawdowns.
- The pattern is based on only a few cycles, so it is a loose guide, not a law.
- Spot ETFs, institutional ownership and a larger, more liquid market are good reasons to expect the cycle to look different from earlier ones.
- Cycle-peak tools such as the Pi Cycle Top indicator worked well in some past cycles but not all. Use them alongside liquidity and market-structure signals.
What is the bitcoin 4 year cycle?
Bitcoin's code releases new coins to miners with each block. Every 210,000 blocks, which works out to about four years, that reward halves. The first reward was 50 BTC per block; after the 2024 halving it is 3.125 BTC. The next halving is expected around 2028.
The theory behind the bitcoin cycle is simple supply and demand. After a halving, fewer new coins come onto the market each day. If demand stays the same or grows, the reduced supply can push prices up. Rising prices attract attention, new buyers and leverage, which pushes prices further, until the market overheats and crashes. The long bear market that follows flushes out speculation, and the base forms again ahead of the next halving.
The four phases
| Phase | Typical behaviour | Common signals |
|---|---|---|
| Accumulation | Price moves sideways after a big crash; interest is low | Fear readings, falling open interest, low volatility |
| Expansion | Price trends up, often starting around the halving | Higher highs, rising dominance, improving liquidity |
| Euphoria / peak | Fast vertical moves, heavy leverage, alt season | Extreme greed, funding spikes, cycle-top indicators flash |
| Bear market | Long decline, large drawdowns | Falling breadth, rising dollar, capitulation events |
A bitcoin 4 year cycle chart usually shows these phases by colouring price according to time since the halving. The shape has been similar across cycles, even though the size of each move has shrunk.
Past cycles in brief
We will keep this qualitative, because the exact numbers depend on which exchange and which day you pick:
- Cycle 1 (2012 halving): Bitcoin rallied into a peak in late 2013, then fell into a long bear market.
- Cycle 2 (2016 halving): the famous run into late 2017, followed by the altcoin mania of late 2017 and early 2018, then a deep bear market through 2018.
- Cycle 3 (2020 halving): a strong run through 2021, with a peak in the spring, a second high in late 2021, and a broad altcoin rally in between. A long bear market followed in 2022.
- Cycle 4 (2024 halving): this cycle broke one pattern early. Bitcoin set a new all-time high in March 2024, before the halving, which had not happened in previous cycles. Spot Bitcoin ETFs in the US, approved in January 2024, were a large part of that demand.
Two general trends run through the history. Each cycle's percentage gain has been smaller than the one before, and each bear market's drawdown has also tended to be less extreme, although still painful. Both are consistent with a market that is getting larger and more mature.
Is the bitcoin four year cycle over?
This is the big debate, and there are reasonable arguments on both sides.
Arguments that the cycle is fading
- The halving matters less each time. New issuance is now a small share of total supply, and it shrinks further with every halving. Daily ETF flows can be larger than daily new supply.
- New types of buyers. Spot ETFs, pension funds, corporate treasuries and advisers buy on different schedules from retail traders, and some hold for years.
- Macro dominates. Bitcoin has increasingly traded with global liquidity, interest rates and the US dollar. Those follow central banks, not the halving.
- Cycle 4 already looked different. The pre-halving all-time high showed demand can front-run the calendar.
Arguments that the cycle still matters
- Human behaviour repeats. Leverage, greed and forced selling still create boom-and-bust patterns, even if the timing shifts.
- Self-fulfilling expectations. Because so many traders believe in the cycle, they buy and sell around it, which can reinforce it.
- Miners still sell. Miner revenue falls at each halving, which still affects selling pressure at the margin.
- Liquidity cycles themselves have run on multi-year rhythms, so a roughly four-year pattern could persist for reasons that have little to do with the halving.
Our view
DanioX treats the four-year cycle as background, not as a timing tool. It is useful for asking "where are we, roughly?", but we do not buy or sell because a certain number of months have passed since a halving. We give more weight to live conditions: the macro chain (see gold vs bitcoin), dollar liquidity, Bitcoin dominance and market breadth. If the cycle is still intact, those signals should line up with it. If it is broken, they will tell you that too.
Cycle peak signals: how traders try to spot the top
Bitcoin cycle peak prediction is hard, and no indicator has called every top. Here are the most widely followed tools and how we think about them.
The Pi Cycle Top indicator
The Pi Cycle Top indicator, created by analyst Philip Swift, uses two moving averages of Bitcoin's daily price:
- the 111-day simple moving average, and
- two times the 350-day simple moving average.
When the faster 111-day line crosses above the doubled 350-day line, the indicator signals a potential cycle top. (The name comes from 350 divided by 111 being close to pi.)
Its record is mixed. It flagged the 2013 and 2017 peaks closely, and in 2021 it triggered near the spring high rather than the later all-time high in November. It is designed around the fast, parabolic tops of earlier cycles. If future peaks are slower and flatter, the fast average may never stretch far enough to cross, and the signal may not fire at all.
Other peak signals worth watching
| Signal | What it suggests at a top | Weakness |
|---|---|---|
| Pi Cycle Top | Price stretched far above its long-term trend | Built for parabolic peaks |
| MVRV and other on-chain valuation ratios | Holders sitting on very large unrealised profits | Thresholds shift as the market matures |
| Funding rates and open interest | Crowded, leveraged long positioning | Can stay elevated for weeks |
| Fear & Greed extremes | Euphoric sentiment | Extreme greed can last a long time |
| Altcoin season index very high | Late-cycle speculation in small caps | Confirms, does not time |
| Rising dollar and yields | Liquidity starting to tighten | Macro turns can take months |
No single signal is enough. A more reliable warning is several of them lining up together: stretched valuation, crowded leverage, euphoric sentiment, and a macro backdrop that is starting to tighten.
The alt-season link
In past cycles, the broadest altcoin rallies came late, after Bitcoin had already made its big move. That is why a very high altcoin season index reading has often been more of a late-cycle warning than a buy signal. Read when is altcoin season for the rotation checklist.
How to use the cycle without being trapped by it
- Use it for context, not entries. "We are about 18 months past a halving" is a reason to check peak signals, not a reason to sell everything.
- Confirm with liquidity. A cycle top without a tightening dollar, rising yields or stretched leverage is less convincing.
- Scale, do not flip. Reducing risk in stages as signals appear is more forgiving than trying to call the exact top.
- Expect variation. With so few cycles in the data set, the next one can differ in timing and size.
Our methodology page explains how we combine these ideas into one market season label.
FAQ
What is the bitcoin 4 year cycle?
It is the pattern of Bitcoin's price moving through accumulation, bull market, peak and bear market over roughly four years, linked to the halving that cuts new supply in half about every four years.
Is the bitcoin four year cycle over?
It is debated. Spot ETFs, institutional buyers and Bitcoin's growing link to global liquidity suggest the halving matters less than it did. At the same time, leverage and crowd behaviour still create boom-and-bust patterns. Treat the cycle as context and confirm with live signals.
How does the Pi Cycle Top indicator work?
It compares the 111-day moving average with twice the 350-day moving average. A cross of the first above the second has marked some past cycle tops. It worked well in 2013 and 2017, triggered near the spring 2021 high rather than the November high, and may not fire if future tops are less parabolic.
When is the next bitcoin halving?
Halvings happen every 210,000 blocks, roughly every four years. After the April 2024 halving, the next one is expected around 2028. The exact date depends on block times.
Can you predict the bitcoin cycle peak?
Not precisely. Traders look for several signals at once, such as stretched valuation metrics, crowded leverage, extreme greed, a very high altcoin season index and tightening dollar liquidity. Taking profits in stages as these appear works better than trying to guess the exact top.
Educational content, not financial advice.