Warp, StockCharts has the PVO, (Percentage Volume Oscillator), which is just like the PPO, only for volume. The PPO is just like the MACD, except it uses the percentage difference between the short and long moving averages, rather than the absolute difference.
"Any model or indicator that works and becomes publicly exposed, will soon stop working". -----------------------------------------------------------
Warp, I have to disagree, for several reasons:
1. Da Boyz have essentially unlimited $$ to spend on computers, programmers, scientists, etc. The chance of us ever coming up with something that they have't already though of has to be just about nil.
2. The average mid-sized hedge fund probably trades more volume than all of us day-trading fools combined -- let alone the really BIG BOYZ. If every day-trader in the world started using the same system it probably wouldn't even be noticed in terms of volume. Sure, the specialists would probably fade us, but they do that anyway, which is why many traders avoid trading NYSE stocks in the first place.
3. If TA ideas that got passed around became invalidated, I wouldn't be able to post the following four charts, on which the recent rally was quite accurately predicted by the plain- vanilla MACD, using STANDARD settings!
With that said, I can understand why those who develop nifty tricks of the trade would not necessarily wish to give away their hard work. After all, we are not communists! {g}
Market Data 
Markets 
AI
