Classification requires a known structural direction, a confirmed reference swing and a precise crossing condition. A BOS marker without these details is insufficient to reproduce a signal or decide on a trade.
Author SecondBell describes BOS as a break of an active swing level in the direction of the existing structure. This documents his community indicator on TradingView, not a universal standard or platform recommendation. We use this explicitly stated convention here. [1]
SecondBell distinguishes BOS from CHOCH, a break against the preceding direction. Therefore, not every crossed pivot can be called BOS under this convention; the direction and corresponding reference boundary must be known first. [1]
Fidelity distinguishes intrabar, multiple-close, time and price filters. An intrabar High beyond a level is therefore not the same test as a Close above a swing peak. Also record how equality and any tolerance are handled. [2]
TradingView shows that a pivot requiring right-hand bars becomes known later. A test cannot evaluate a break against a point that was not yet confirmed at the time; a historical marker's location alone does not establish information availability. [3]
For a reproducible test, we propose distinguishing the first crossing from subsequent persistence beyond the same boundary. Store the identity of the swing used and the signal-reset rule; when changing parameters, reassess the overfitting risk highlighted by TradingView. [4]
Fidelity notes that an intrabar move may return before the bar's Close. If the rule requires a close, do not mistake a provisional marker for a confirmed event; however, a stricter filter does not eliminate every unsuccessful case either. [2]
SecondBell explicitly rejects guaranteed continuation or reversal and describes the tool as context, not a complete system. The BOS label therefore confirms only that a defined condition was met; it determines neither move extent nor entry or position size. [1]
TradingView describes costs, Slippage and selection bias. Evaluation must include all events under the rule, actual execution assumptions and further data. Even a correctly recorded BOS does not by itself establish an executable profit. [4]
The first Close above a known swing peak
Assume an already established rising structure and a previously confirmed peak H = 104000 USD/BTC. The chosen rule requires the previous Close to be at most H and the current Close > H. Previous Close = 103800 and current Close = 104300 USD/BTC meet the condition; the excess is 104300 − 104000 = 300 USD/BTC. Equality at Close = 104000 is insufficient. If the next bar also stays above the same H, this rule does not count it as a new event. This is a hypothetical classification, not a forecast of the next price.
For the clearest picture, read this entry together with Market Structure Analysis, Breakout, False Breakout, Timeframe, Slippage, Backtesting. The reverse links also lead from Market Structure Analysis.
01Is BOS the same as any break of a peak or trough?+
Not under the convention used here. BOS follows the established structure's direction; the author classifies a break against it as CHOCH. Another tool must explain its own classification separately.
02Can I treat a marker on the pivot bar as a signal available then?+
Only if the required information was actually available at that time. A pivot confirmed by later bars cannot be used as earlier entry information without shifting its availability time.