%%Then diversification should not make a difference
Then diversification should not make a difference
No one knows; it is more a case of managing your position than diversification.
That does make diversification easier although not better
Not really relevant as the same goes for all active managers. Can you beat the index or are you better off trading an index ETF?
That possibly makes the trading cost a non factor. Depends on how often you trade. A trader who trades only a few stocks but trades often has higher costs than a long term swing trader.
I can have a single position and move into the market slowly, pyramid my position to a full position as the market moves in my favor.
A smooth equity curve is nice to look at but my goal is protection of capital and superior returns. I feel that the more positions you hold the more you will tend towards average. If I was satisfied with average I would buy SPY.
I have 20 stocks over a 5 portfolios that I manage and feel I'm over diversified.
That;
+ actually SPY tends to be one of the better averages/benchmarks. LOOK how few beat SPY over 10 years...........................................................................................