Pi Cycle Bottom — the cross at the lows.
The bottom-side twin of the Pi Cycle Top. When Bitcoin's 150-day exponential moving average drops below 0.745 times its 471-day simple moving average, the market has historically been at or near a cycle low.
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The two lines since 2013
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Indicators describe where price sits relative to its own history. They are not forecasts and not financial advice. Past cycle behaviour is no guarantee of future cycles.
Three crosses, three lows
Philip Swift published the bottom version alongside the Pi Cycle Top. Crosses in the daily data: January 14, 2015, the day of that cycle's low · December 16, 2018, one day after the low · July 13, 2022, four months before the November low. The ratio form shows how far the lines are from crossing.
What it read at past tops and bottoms
| DATE | BTC CLOSE | PI CYCLE BOTTOM RATIO | 150-DAY EMA | 0.745 × 471-DAY SMA | |
|---|---|---|---|---|---|
| 2013 top | Dec 4, 2013 | $1,132 | 3.945 | $312.97 | $79.34 |
| 2015 bottom | Jan 14, 2015 | $171.41 | 0.996 | $379.89 | $381.30 |
| 2017 top | Dec 17, 2017 | $18,953 | 3.445 | $7,205 | $2,091 |
| 2018 bottom | Dec 15, 2018 | $3,180 | 1.005 | $5,837 | $5,807 |
| April 2021 top | Apr 13, 2021 | $63,564 | 2.956 | $41,721 | $14,114 |
| November 2021 top | Nov 8, 2021 | $67,559 | 1.874 | $49,669 | $26,511 |
| 2022 bottom | Nov 21, 2022 | $15,766 | 0.799 | $21,831 | $27,318 |
| 2025 top | Oct 6, 2025 | $124,728 | 1.643 | $110,258 | $67,120 |
| Latest close | Sep 27, 2026 | $84,457 | 1.124 | $73,288 | $65,183 |
Get pinged when it crosses your level
0.745 × the 471-day average sits at $65,183 today — the line the 150-day EMA has to drop below. Set an indicator alert and coinsentry checks it at every daily close, pinging you on Telegram, Discord, Slack, email or webhook the first close it crosses your level — once, or every time it crosses. Indicator alerts are part of the Unlimited plan. Prefer a price level? Bitcoin price alerts are on the Bitcoin price alerts page.
Fair questions, straight answers
The bottom counterpart to the Pi Cycle Top. It compares the 150-day exponential moving average with the 471-day simple moving average scaled by 0.745. When the 150-day EMA drops below the scaled line, Bitcoin has historically been at or near a cycle low.
It crossed on January 14, 2015, the day of that cycle's low, and on December 16, 2018, one day after the low. In 2022 it crossed on July 13, about four months before the November low, and stayed crossed through it.
The 150-day EMA divided by 0.745 × the 471-day SMA. At 1.00 or below the lines have crossed. The ratio shows how close they are.