What is spread in forex and why can a trade start in the red?

Summary
Understanding forex spreads-the difference between bid and ask prices-helps traders assess transaction costs, liquidity, market volatility and the impact of economic news before entering or exiting currency trades.
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What is spread in forex and why can a trade start in the red?
Understanding forex spreads-the difference between bid and ask prices-helps traders assess transaction costs, liquidity, market volatility and the impact of economic news before entering or exiting currency trades.