TidelineHow it works
No secret. The Tideline is the Supertrend indicator with period 10 and multiplier 3, a trend rule published in the early 2000s and available on every charting platform. Our job is not the maths — it is to apply one rule, the same way, to every asset, on completed candles only, and to publish every result including the bad ones.
The line
Each candle, take the candle's midpoint and move 3 × ATR(10) away from it. In an uptrend the line sits below price and only ratchets up; in a downtrend it sits above price and only ratchets down. When a candle closes on the other side of the line, the direction flips and the line jumps to the other side.
Three states you see
- ▲ Tide in — direction is up and price is more than half an ATR(14) above the line.
- ▼ Tide out — direction is down and price is more than half an ATR(14) below the line. Cash is a position.
- — Slack water — price is within half an ATR of the line, on either side. The line could flip on the next candle. Do nothing new.
Slack water is a distance band, not a second indicator. The underlying rule stays binary, which is what the ledger records and what alerts are based on.
Completed candles only
A daily candle closes at 00:00 UTC; a weekly one on the venue's week boundary. We read states and send alerts only after the close. Reading the forming candle looks faster but about half of those flips reverse before the candle ends — measured on our own data, 192 of 385.
Replayed vs live
When an asset enters the universe, its whole history is replayed through the same code and marked replayed. Every flip from then on is written by an automated run after the candle closes and marked live. The two are never mixed in a statistic.
What it is not
Not a prediction. Not advice. Not a win rate. In sideways markets a trend rule flips often and loses a little each time — that is the price of being out before the big drops. The ledger shows the choppy stretches too.