Bitcoin Pi Cycle Indicator
The Pi cycle indicator compares the 111-day moving average ($74,284) with twice the 350-day average ($152,717). Today the faster line is 51% below the slower one, so there is no "top" signal. The last cross was on April 11, 2021, 2 days from that cycle's high.
Live price, Oct 25, 2026, 19:04 UTC · Averages and models from daily closes to Oct 25, 2026
Pi cycle indicator
Every Pi cycle cross
| Cross | Price that day | Cycle high (±60 days) | Lowest in the next 400 days |
|---|---|---|---|
| Apr 11, 2021 | $60,205 | $63,503 Apr 13, 2021 | $28,936 (−52%) |
| Dec 16, 2017 | $19,497 | $19,497 Dec 16, 2017 | $3,237 (−83%) |
From our daily closes since Sep 17, 2014. The April 2013 and December 2013 crosses happened before our data starts.
How the Pi cycle works
Analyst Philip Swift noticed in 2019 that bitcoin's cycle peaks came within days of the 111-day moving average rising through twice the 350-day average. The name comes from 350 ÷ 111 ≈ 3.15, close to π.
It caught the 2013, 2017 and April 2021 highs, but the second 2021 peak in November came without a new cross, and the indicator says nothing about bottoms. With only a handful of crosses, it is a curiosity of past cycles rather than a proven signal.
Other bitcoin indicators
Pi cycle: FAQ
Has the Pi cycle indicator crossed?
No. The 111-day average is 51% below twice the 350-day average. The last cross was on April 11, 2021.
Why 111 and 350 days?
They were chosen because they lined up with the 2013 and 2017 peaks. 350 ÷ 111 ≈ 3.153, close to pi, which gave the indicator its name.
Did the Pi cycle call the 2021 top?
It crossed on April 11, 2021, within a day of the April 2021 high. Bitcoin then set a slightly higher peak in November 2021 without a new cross.
Is the Pi cycle useful for buying?
It was designed to spot tops, not bottoms, and it has very few data points. Do not rely on it alone; nothing here is advice.
These are ways of describing the price history, not forecasts. Past patterns can break, and nothing here is investment advice.