What is candlestick?
One bar per day: the thick body spans the opening and closing price, the thin wicks reach the day’s high and low.
One bar per day: the thick body spans the opening and closing price, the thin wicks reach the day’s high and low.
Candlestick, explained
A candlestick packs a whole trading day into one shape. The body runs between the price the day opened at and the price it closed at — coloured up when the close finished above the open, down when it finished below. The thin wicks above and below reach the highest and lowest prices the day touched. Read together they show not just where a day ended but how far it travelled to get there: a small body with long wicks was a day that swung hard and settled near where it began. Where the journal holds only a closing price for a day — every day recorded before it started storing whole bars — it draws a plain line instead, because a close is not a candle and nothing here invents the rest of one.
A worked example
A long lower wick under a small body: sellers pushed the price down hard during the day, buyers took it back before the close.
Where candlestick shows up in a journal
A trading journal is where this stops being a definition and becomes your own number. sizeforzero computes it from the trades you import or log, alongside the rest of your analytics vocabulary, and every figure in the app carries an (i) that explains it in the same plain English you just read.