Market structure for option traders: break of structure and change of character
Indicators lag because they average. Structure does not: it is the raw sequence of swing highs and swing lows, and it changes on a single close.
Swings
A swing high is a candle whose high is higher than the three candles on either side; a swing low is the mirror. Because you need the three candles after it, a swing is confirmed three bars late. That delay is the price of never repainting.
BOS: break of structure
In an uptrend price makes higher highs and higher lows. When a close breaks the last swing high, the uptrend has continued: break of structure. It confirms what you already believed.
CHoCH: change of character
When, in that same uptrend, a close breaks the last swing low instead, the sequence has broken: change of character. It is the earliest structural warning that the trend has flipped, usually well before a moving average crosses.
Why option traders care
Structure sets the bias for everything else. A bullish structure with price in the lower half of its range (a discount) is where you sell puts or buy calls; a bearish structure in the upper half (premium) is where you sell calls. Trading against structure is how good option-chain reads still lose money.
See it drawn
The VIP Indicator marks every swing, BOS and CHoCH on NIFTY, BANKNIFTY and any F&O stock from 5-minute to daily candles, then layers order blocks, fair value gaps and liquidity on top. The next guide covers those zones.