http://thequantinvestor.blogspot.com/2011/04/how-to-completely-outperform-market-by.html
Like any strategy it can be improved on, and in this post I'll try to do just that. Here I'll add another important consideration when buying a stock, the volume backing its price movement. To do that, let me introduce what I call the Volume Moving Average Ratio (VMAR). What this simply is, is the ratio of the 20 day volume moving average to the 75 day volume moving average (you can use other lengths of time as well):
VMAR = VMA(20 day) / VMA(75 day)
What this tells us is how much the recent average volume is compared to the longer term volume. I used the simple moving average but an exponential would work as well. In theory, a VMAR >> 1 means a stock has significantly more investment activity than usual and, correlated with a price gain, indicates that perhaps its price movement IS warranted.
Now we could potentially cover a huge combination of VMARs and hold times. I'll leave it up to you, the reader, to find the best combination. But now I present to you two scenarios of short (1 or 3 month) hold times with VMARs greater than 1 or 2.
What we see is impressive...enormously impressive. In fact a strategy of 'buying high' backed with volume can make you a very wealthy person. Of course I make no promises, and any strategy that worked last decade may not this decade, and you should consider that. Also, don't forget commissions, as with any trading strategy, can easily take 1-2% off every trade. But these are the facts, and the numbers, and of that I am 100% certain. So here you go...enjoy!
1 Month Hold (VMAR > 1.5)
10 Year performance Avg. Return Stocks meeting criteria
NYSE 756% 1.7% 1947
Nasdaq 597% 1.5% 4653
Amex 1531% 2.3% 885
1 Month Hold (VMAR > 2)
10 Year performance Avg. Return Stocks meeting criteria
NYSE 4381% 3.2% 330
Nasdaq 161% 0.4% 1507
Amex 1936% 2.5% 317
3 Month Hold (VMAR > 1.5)
10 Year performance Avg. Return Stocks meeting criteria
NYSE 314% 2.9% 1005
Nasdaq 539% 4.3% 2905
Amex 918% 5.7% 573
3 Month Hold (VMAR > 2)
10 Year performance Avg. Return Stocks meeting criteria
NYSE 1068% 6.1% 182
Nasdaq 248% 2.3% 1000
Amex 918% 5.7% 236
