Bid-only charts versus seeing both sides: what the chart is not telling you
Posted: Sat Oct 31, 2026 11:07 am
Two traders can look at the same candle and have completely different trades. One reads the bid chart and assumes that every price on it is available to both buying and selling. The other keeps the ask visible and treats every level as two numbers. The difference sounds cosmetic until a scalp is only three pips wide.
Start with how most terminals draw candles: from the bid. A sell opens at the bid, and a long closes at the bid, so the chart is honest for those two actions. For the other half, buys entering and shorts covering, the real price is the bid plus the spread at that instant. On a pair with a 0.2 pip spread that gap is invisible. On a pair showing 1.5 pips in a quiet hour, it is half of a three pip target before anything has happened.
With a bid-only view, a long looks like it needs price to rise from the entry line to the target line. In reality the entry was higher than the line shows and the exit is at the bid, so the bid has to travel further than the chart suggests, by one full spread. A trade that "touched" the target on the chart may never have been closable at that price if the spread was wide at the moment of the touch.
Now the other approach. Showing the ask line, or a live spread readout in the corner, makes the cost of each decision visible. Setups that looked clean start to look thin. Targets get set from the correct side. Stops on shorts, which trigger on the ask, get placed with that in mind.
The trade-off is clutter. Two lines on a one minute chart can distract, and some people trade better with a clean screen. A middle route is to keep the chart on bid but show the live spread in numbers and flag any moment when it goes past a set threshold.
Does keeping the ask line on the chart change which trades you take, or do you find a spread readout is enough?
Start with how most terminals draw candles: from the bid. A sell opens at the bid, and a long closes at the bid, so the chart is honest for those two actions. For the other half, buys entering and shorts covering, the real price is the bid plus the spread at that instant. On a pair with a 0.2 pip spread that gap is invisible. On a pair showing 1.5 pips in a quiet hour, it is half of a three pip target before anything has happened.
With a bid-only view, a long looks like it needs price to rise from the entry line to the target line. In reality the entry was higher than the line shows and the exit is at the bid, so the bid has to travel further than the chart suggests, by one full spread. A trade that "touched" the target on the chart may never have been closable at that price if the spread was wide at the moment of the touch.
Now the other approach. Showing the ask line, or a live spread readout in the corner, makes the cost of each decision visible. Setups that looked clean start to look thin. Targets get set from the correct side. Stops on shorts, which trigger on the ask, get placed with that in mind.
The trade-off is clutter. Two lines on a one minute chart can distract, and some people trade better with a clean screen. A middle route is to keep the chart on bid but show the live spread in numbers and flag any moment when it goes past a set threshold.
Does keeping the ask line on the chart change which trades you take, or do you find a spread readout is enough?