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Forex 101

Forex—short for foreign exchange—is the global market where one currency is exchanged for another. It is the market behind international travel, trade, investing, and central-bank policy. For a trader, Forex is a market of relative value: you are never buying or selling a currency in isolation. You are expressing a view about how one currency may perform relative to another.

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What you will learn

By the end of this lesson, you should be able to:

• Read a Forex currency pair and explain its quote.
• Distinguish between buying and selling a pair.
• Understand pips, spreads, lots, margin, and leverage.
• Identify the major trading sessions and their characteristics.
• Calculate basic position risk before placing a trade.
• Recognize why risk management matters more than prediction.

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1. What is the Forex market?

The Forex market facilitates the exchange of currencies. Businesses may exchange currency to pay overseas suppliers; tourists exchange currency before travel; banks, funds, and institutions manage international exposure. Retail traders access price movements through a broker or trading platform. Unlike a centralised stock exchange, Forex is primarily an over-the-counter (OTC) market: transactions and price feeds are distributed across banks, liquidity providers, and brokers. The market operates across major financial centres during the business week, generally from late Sunday through late Friday in New York time.

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Why do currency prices move?

Currency prices respond to changing expectations about economies and capital flows. Common influences include:

• Interest-rate decisions and interest-rate expectations
• Inflation, employment, and growth data
• Central-bank communication
• Political and geopolitical developments
• Risk sentiment across global markets
• Trade flows and demand for safe-haven currencies

A single headline does not guarantee a single outcome. Markets often move based on the difference between an announcement and what participants already expected.

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2. Understanding currency pairs

A Forex quote contains two currencies: EUR/USD = 1.0850 When EUR/USD is 1.0850, €1 is equivalent to $1.0850.

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Buying and selling a pair

When you buy EUR/USD, you are:

• Buying euros
• Selling US dollars
• Expecting the euro to strengthen relative to the dollar, or the dollar to weaken relative to the euro

When you sell EUR/USD, you are:

• Selling euros
• Buying US dollars
• Expecting the euro to weaken relative to the dollar, or the dollar to strengthen relative to the euro

Example: A long EUR/USD idea

You buy EUR/USD at 1.0850 because your analysis suggests the pair may rise. If price later reaches 1.0900, the pair has increased by 50 pips. Whether that movement creates a profit depends on your position size, spread, commissions, financing charges, and execution.

Example: A short GBP/USD idea

You sell GBP/USD at 1.2700 because your analysis suggests the pair may fall. If price later reaches 1.2650, the pair has decreased by 50 pips. A short position benefits from a decline in the quoted pair; it loses value if price rises instead.

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Major, minor, and exotic pairs

Forex pairs are commonly grouped by liquidity and the currencies involved. Major pairs often have tighter spreads than minor or exotic pairs, but no pair is inherently easy or low risk.

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3. Bid, ask, and spread

At any moment, a trading platform may show two prices:

• Bid: the price at which you can sell the pair.
• Ask: the price at which you can buy the pair.
• Spread: the difference between the bid and ask.

For example: If you buy at the ask price and immediately sell at the bid price, the spread creates an initial trading cost.

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4. Pips and price movement

A pip is a standardized unit used to describe price movement in most currency pairs. For most pairs, one pip is the fourth decimal place:

• EUR/USD moves from 1.0850 to 1.0851 = 1 pip
• GBP/USD moves from 1.2700 to 1.2750 = 50 pips

For Japanese-yen pairs, one pip is typically the second decimal place:

• USD/JPY moves from 150.20 to 150.21 = 1 pip

Many platforms display an additional fractional digit, sometimes called a pipette or tenth of a pip.

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Pips measure movement—not risk by themselves

A 20-pip stop loss is not automatically conservative, and a 100-pip stop loss is not automatically aggressive. Risk depends on both:

1. The distance between entry and stop loss.
2. The value of each pip at your chosen position size.

This is why position sizing comes before execution.

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5. Lots and position size

A lot describes the size of a Forex position. Common conventions are: The monetary value of a pip changes with the pair, account currency, exchange rate, and trade size. Rather than memorising a fixed pip value, use a position-size or risk calculator and verify the platform’s contract specification.

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A risk-first position-sizing example

Assume a hypothetical account of $10,000:

• Maximum planned risk: 1%
• Maximum cash risk: $100
• Stop-loss distance: 25 pips

Your maximum acceptable loss is $100. Therefore, your position size should be selected so that a 25-pip loss, including expected trading costs where possible, does not exceed that amount. In simplified form: Position size = cash risk ÷ (stop distance × pip value per unit) The formula is simple; the discipline is not. Your stop loss should be placed where the trade idea is invalidated—not moved to fit a larger position.

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6. Leverage and margin

Leverage lets a trader control a larger position using a smaller amount of capital. Margin is the amount of account equity required by the broker to open and maintain that leveraged position. For example, 30:1 leverage means that, subject to broker rules and jurisdiction, $1 of margin can control up to$30 of position value. Leverage changes capital efficiency. It does not reduce risk. A small market movement can create a large gain or loss when the position is oversized relative to account equity. Margin requirements may also change by instrument, account type, volatility, or broker policy.

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7. Market sessions and liquidity

Forex activity follows major financial centres. The precise hours shift with daylight-saving changes, but the market is commonly discussed through four sessions: The London–New York overlap is frequently one of the most active periods for major currency pairs. More activity can mean more opportunity, but it can also mean faster movement and more difficult execution.

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Match the instrument to the session

A trader analysing GBP/USD may find London and New York activity more relevant than a quiet late-session period. A trader watching AUD/JPY may pay closer attention to Asian-session flows. Session awareness is context—not a trading signal. Price structure, liquidity, scheduled events, and your setup rules still matter.

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8. Orders: how a trade is managed

Trading platforms offer several order types. Names and exact behavior can vary by broker, so always review your broker’s documentation. A stop loss is a risk-management instruction, not a guarantee of an exact exit price. During fast markets or gaps, execution may occur at a less favourable price. This is known as slippage.

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9. Risk-to-reward and expectancy

A trade plan should define both:

• Risk: what you lose if the setup is invalidated.
• Reward: what you may gain if the planned target is reached.

If you risk 20 pips to seek 40 pips, the planned risk-to-reward ratio is 1:2. This does not mean the trade will win, nor does it make the setup automatically valid. A trading method is evaluated over a meaningful series of trades, not through one winner or loser. Long-term results are influenced by:

• Win rate
• Average win
• Average loss
• Trading costs
• Execution quality
• Consistency with defined rules

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10. A pre-trade framework

Before placing any practice or live trade, answer these questions. A trade without a defined invalidation point is not a complete trade plan. It is an open-ended exposure to uncertainty.

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Common beginner mistakes

Confusing leverage with risk capacity

Leverage determines how much exposure you can control with available margin. Risk is determined by position size, stop distance, and the amount of equity you are willing to lose. Keep these concepts separate.

Moving a stop loss farther away

Widening a stop after entry can turn a planned loss into an unplanned one. If the original thesis is invalidated, the disciplined response is usually to accept the predefined outcome and review the setup later.

Trading every price movement

The market is always moving, but not every movement meets your criteria. Selective participation is a core trading skill.

Ignoring economic-calendar risk

Scheduled events can change liquidity and volatility rapidly. Know when relevant central-bank decisions, inflation releases, employment reports, and other high-impact events are due.

Judging a strategy from one trade

One result is noise. Review a structured sample of trades, including setup quality, risk consistency, costs, and rule adherence.

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Knowledge check

1. In EUR/USD, which currency is the base currency?
2. If EUR/USD rises after you buy it, what has happened to the euro relative to the US dollar?
3. What is the difference between a pip and the monetary value of a pip?
4. Why does a stop-loss distance alone not determine trade risk?
5. Why can a stop loss be filled at a different price during volatile conditions?
6. What must be defined before calculating position size?

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Next steps

Now that you understand the language of Forex, continue building the foundations that turn information into a structured process.

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Key takeaway

Forex trading is not about knowing with certainty where price will go next. It is about forming a testable idea, defining where that idea is wrong, sizing risk appropriately, and repeating disciplined decisions over time.