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But I'm thinking trend-following on 1/n portfolio of high beta stocks where n=~20 You never know what will take off so churning losers helps to find the big winners
Net pnl is gross pnl minus costs. Turnover always increases costs. If it increases gross pnl more than it increases costs, that’s good! But it’s easy to overestimate what gross pnl will be, whereas costs are certain, so better to err on the side of lower turnover.
Can't agree The paths through the same dataset are so varied it's better to agitate the system to try and avoid getting stuck on a sub-optimal path
It's a trading cost overhead driver and an opportunity cost mitigation I suppose
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