What is a chart

What a chart is in trading

Every bar or candle is an aggregate of transactions from a given time period. Line, OHLC bar, and Japanese candlestick show the same history with different detail density. The chart does not have to go your way — it is a decision map, not a guarantee of outcome.

On a regulated exchange, you see session prices for stocks and ETFs, with gaps after close. On CFDs and forex, you see prices quoted by the broker, often 24/5. Always check whether you are looking at the underlying instrument or at a leveraged derivative product with spread, commission, and overnight financing. The same HH/HL structure on a chart does not mean the same risk in account currency when the multiplier and leverage differ.

Reading layer protocol

First instrument and costs, then higher timeframe bias, then lower timeframe timing — not the reverse. Indicators, covered in later lessons, come in as a filter, not as a signal from a video.

Cost test: before choosing a timeframe

This test takes five minutes and eliminates the most common beginner mistake — trading on a timeframe where transaction costs are larger than the edge.

1. Open the instrument specification at your broker.
2. Record the spread in points or pips for your position size.
3. Record the ADR, or average daily range, from the last fourteen sessions.
4. Calculate: round_turn_cost = spread plus commission in both directions.
5. Calculate: share = round_turn_cost divided by (ADR divided by candles_per_day).

Step 5 is the most important, and almost no one does it. A candle on M15 is 1/96 of a day, so its average range is roughly ADR/96. If spread is 20 per cent of that range, you need a move 20 per cent larger than the candle range just to breakeven on every trade.

Illustrative example: if a pair has ADR 70 pips and spread 0.6 pips, on H1 the candle range is roughly 70/24 equals 2.9 pips, so spread is about 21 per cent of that range. The same spread on H4 is about 5 per cent. The conclusion is mechanical, not opinion-based: the shorter the timeframe, the larger the share of movement you give away to costs.

Practical rule for your plan: if spread plus commission exceeds a few per cent of the average range of your entry candle, that timeframe is too short for you — unless your edge lies in something other than catching a move larger than the candle.

How to choose a timeframe

Beginner mistake: looking for an entry on M1 without bias from D1. First higher timeframe for direction and zones (trend, structure and range), then lower timeframe for timing. On CFDs, avoid mixing timeframes from different brokers without checking whether the quote is synchronous with the spot — the same level is often shifted by spread.

Set one default analysis timeframe and one entry timeframe in your learning plan. Changing timeframe during a setup because it looks better is classic live overfit.

Chart types worth knowing

• Line chart — closes only; good for a quick trend overview and presentation.
• Bar chart (OHLC) — full period information without coloured narrative.
• Candlestick chart — OHLC plus readable session psychology; standard in trading.

In later lessons we stay with candlesticks. Volume on regulated exchanges is often more reliable than on many CFDs, where it may be the broker’s proxy turnover — treat it cautiously and do not build your entire edge on it.

The same level on different timeframes

The same price area can look like significant resistance on M15 and like insignificant noise on D1. The first decision in analysis is therefore choosing the default context timeframe — not searching for the best level across all intervals at once.

When the chart says do not trade

Three situations where looking at the chart longer will not help:

1. Spread is wider than normal — opening session, data release, holiday in one session. The chart looks normal, but entry cost is two or three times higher.
2. No default timeframe — if you jump between M5 and W1 looking for confirmation, you are not analysing, you are negotiating with yourself.
3. Broker chart without reference — broker A’s quote is not the underlying market. If a level exists only on that one chart, it is not a level, it is a quoting artifact.

Five-session worksheet

After five rows, answer two questions: does the spread share of candle range decrease when you extend the timeframe, and do your losing trades cluster on the interval with the highest cost share. The second answer is often uncomfortable, and that is why it is valuable.

What to avoid on a chart

• Overfitting: drawing twenty lines to fit the last swing.
• Trading on M1 with full deposit before you have a journal and R limits.
• Ignoring sessions: breakout on thin Asian session versus London–New York overlap are different environments.
• Confusing a pretty screenshot with a setup that has invalidation and size.
• Choosing a timeframe because it looks nice instead of because of cost.

Common beginner chart mistakes

• Analysing multiple timeframes without a fixed hierarchy — bias should flow from top down, not reverse.
• Treating every candle as a separate event without looking at the broader structural context.
• Comparing a CFD chart to the underlying instrument one to one without realising that broker quoting can differ slightly.
• Changing the default timeframe during analysis of one setup — the most common path to seeing what you want to see.
• Ignoring cost on short timeframes — the most common reason a strategy works on demo but not on live. On demo, spread is often tighter or calculated differently.

Exercise

Choose one liquid instrument, such as a major index CFD or EURUSD. On D1, mark three swing highs and lows. Over five sessions on H1, record in a sheet: date, position relative to the last swing low, whether the planned setup aligned with the D1 bias, and paper result in R if there was a trade. Additionally, calculate the cost test from the section above for M15 and H4 and compare spread shares. Goal: five complete rows, not a chart feeling.

Measurable exercise

Choose one demo instrument. Record: capital, 1% risk in USD, distance to invalidation, the resulting size, and whether you end the session after the −2R limit. One row in a sheet beats three hunches from a chat.

Common questions

Which timeframe should I start learning charts on?

The daily (D1) or 4H — you can see structure without M1 noise. Practice entry timing later on a lower timeframe with an established bias.

Do a CFD chart and an exchange stock chart read the same way?

Yes in terms of OHLC and structure. They differ in session, costs, leverage, and whether the price is the underlying market or a broker quote — always check the costs and contract terms.

Is a line chart enough for trading?

For a quick trend read, yes. For entries and stops you need the period high/low — hence candles or OHLC bars.

Why calculate spread as a percentage of candle range if I know the spread from the fee table?

Because spread alone says nothing. A spread of 1 point is cheap on an instrument that moves 250 points a day, and expensive on one that moves 20. The spread share of candle range shows how much of the move you give away on entry and exit — and that is the number you compare between intervals.