One possible method I can think of is rebalancing. Investopedia explains rebalancing as
The process of realigning the weightings of one's portfolio of assets. Rebalancing involves periodically buying or selling assets in your portfolio to maintain your original desired level of asset allocation.For my case, I don’t buy into bonds. Most of my cash are invested into stocks as I am a high risk taker. So what I can do is to switch into cash when the market is moving up or switch back into stocks when market is tanking. The most important point to take note of is that the switching should be done on a continuous basis and not at one shot. For example, when market goes up by 10%, I should be switching 10% of my stocks into cash. When market goes up by another 10%, I must switch another 10% of my stocks into cash. The reverse should be done when market tanks. The bottom line of rebalancing is, there should be some kind of system in selling your profitable investments and buying into the less performing investments. Just like for my case, the two assets are stocks and cash. So I should be switching between these two assets. The rebalancing technique I have mentioned is another method of rebalancing in my opinion. I am making use of the market return to trigger my switching decisions. Alternatively, one can also follow the investopedia definition by using weightage as a trigger in making switching decisions.
Now we know there ought to be some system of rebalancing so as to realise some profits and plough back into the less performing investments. But the question is, which are the stocks to sell when the market is going up? Here are some basic techniques in identifying the stocks to sell.
1.Sell those profitable stocks that have run up too fast within a short period of time.
2. Sell those profitable stocks that are overvalued.
3. Sell those profitable stocks that have reached your target returns.
At the moment, market is pretty volatile and uncertain because of US economic recovery, Europe debt crisis and China slowing down. For now, no one can be really sure if the market has bottomed or not. I didn’t manage to sell my profitable stocks during the recent up market but now I am adopting a slightly different rebalancing technique. That is I am slowly trying to sell my most profitable stocks as the market is tanking. In such a way, I can plough back my cash into stocks should the market undergo a 50% plunge like in the recent financial crisis. If the market moves up from here on, I will adopt the rebalancing technique that I mentioned in the earlier part of this post. Either way, I must learn to start selling my profitable stocks.