Confirmation is price doing something that signals the turn the window anticipated is actually underway. You don't need an exotic pattern library — a handful of reliable structures cover most cases. The key is that each one represents a genuine shift in who's in control, not just a single suggestive candle.
Reading price's answer
The core confirmations
Trendline break. Price has been riding a clean trendline into the window; it breaks and holds the other side. The simplest evidence the prior trend has paused or reversed.
Level reclaim / loss. Price reclaims a level it had lost (bullish) or loses a level it had held (bearish) right around the window. Reclaims after a flush are especially powerful.
Failure swing. In an uptrend into the window, price tries for a new high and fails, then breaks the prior swing low. (Inverse for downtrends.) A classic structural reversal.
Reversal candle with follow-through. A strong rejection candle (long wick, engulfing) at the window — but only counts once the next candles follow through. One candle is a hint; follow-through is confirmation.
Notice the theme: each requires price to do something and have it stick. A wick with no follow-through, a break that immediately fails — these are not confirmations, they're bait.
Matching confirmation to the window
The cleaner the structure into the window, the cleaner the confirmation. A window that arrives while price is riding an obvious trendline gives you a precise trigger (the break). A window that arrives mid-chop gives you nothing to react to — which is a reason to pass, not to force a read.
Let the chart set the trigger
Don't bring a fixed pattern to every window. Read the structure price has actually built into the date, and let that define what a valid confirmation would be. Different setups, different triggers.
Confirmation tells you a turn is underway and in which direction. The next two lessons sharpen it: volume tells you how much conviction is behind the move, and the 52-week context tells you what kind of move to expect.
❓ Price prints a big bullish reversal candle right at a window, but the next two sessions drift back down through its low. Was this a confirmation?
Key takeaways
Confirmation is price doing something that sticks — a real shift in control.