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>>Es kann ja heutzutage jeder Leerverkäufe tätigen.
Mag sein.
Aber, wer auf der Longseite keine Gewinne machen kann, dem bricht die Shortseite endgültig das Genick. Manche denken, "short" ist bloß Gegenteil von "long". Das stimmt jedoch schon alleine vom mathematischen Standpunkt nicht.
"...The less obvious but equally problematic reason is due to simple math. When you are long and a position goes in your direction, it grows larger. Your exposure grows with profit. A long-term trend up means that your position organically expands. With shorts the situation is reversed. When a short position is going in your direction, your exposure shrinks. The notional amount naturally becomes smaller when the value declines. This problem is larger than it may seem.
The profitability of trend following trading is based on the lasting trends; on capturing the larger moves. The simple fact that successful short positions shrink organically means that there is not enough profit to be made from lasting trends.
Professional trend followers deal in multiple asset classes. It may surprise that the lacklustre performance on the short side holds true for all of them..."
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