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Capital loss definition
When a trader sells an asset at a lower price than they initially paid for it, they have incurred a capital loss. As such, capital loss is the opposite of capital gain: the profit made when an asset is sold for more than originally paid.
Capital loss occurs when the drop in price of an asset is realised by a trader: in other words, when they sell the asset for less than they bought it. When a financial asset’s price has moved lower than the price initially paid it has not yet incurred a loss, as that only happens when the trader executes the sale.
For example, buying £400 of Tesco stock then selling after it has dropped to £300 would incur a capital loss of £100. If you held onto the stock at £300 and it returned to £400, though, no capital loss would be realised and the trade would be even.
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