Hi LH, as you quoted correctly, AIM is about cash/equity allocation. Not about stock selection. That is our job. I see that Karel just urged to let winners run. And that's very true. But when they have run their course, there is no reason to not switch horses.
I do have a problem with the statement: "It is our job to generate volatility". Of course you can generate volatility. But that would IMHO not be prudent portfolio management. Let the market generate the volatility. Concentrate on picking winners. If a winner has run it's course, then drop it. Bye bye and thanks for the cash!.
There is the point that the market likes to move as a whole. That makes switching horses a bit difficult.
My personal preference would be to own a portfolio of, say, 5 stocks (tech stocks) which I believe would be winners. You also keep a watch list of another 5-10 stocks that you believe are potential winners. Then as the portfolio takes off, and AIM wants to sell something, you sell the slow movers. When AIM tells you to buy, you buy the strongest of the watch-list stocks.
If this is implemented correctly, you should over time have lots of sells, and only a few buys. Which is exactly what I like. I.e. cash is generated. What I would do with the cash?, well move it down the investment pyramid and put it in income producing (AIMed) accounts.
Just some thoughts,
Rien