Because there are practically no large players on the market with long planning horizons, what would be the garlic, and those who have them( insurance, pension funds, endowments) usually they don't do things like active management. As a result, prices are set on the margin by speculators., who, in principle, are only chasing the current trend. More and more money is managed by 'professionals', and this creates its own inefficiencies. So that clients carry money and a commission, the fund must perform, and constantly.
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