A standard lot is a buy or sell size. If you buy 1 lot of EUR/USD, trading at 100:1 leverage then you buy 100,000 EUR/USD. But since you’re trading with 100:1, the leveraged value is 1,000 EUR/USD or 1 standard lot. If you trade a mini lot, then you buy 10,000 EUR/USD and the leveraged value is 100 EUR/USD or 1 mini lot.
Without proper risk management, this high degree of leverage can lead to large losses as well as gains.
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