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The True Value Of Indicators

By Boris SchlossbergMarket OverviewMay 03, 2021 05:46AM ET
www.investing.com/analysis/the-true-value-of-indicators-200577057
The True Value Of Indicators
By Boris Schlossberg   |  May 03, 2021 05:46AM ET
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Indicators from price action are different from engineering signals

But if you’ve ever used any of Welles Wilder’s—the inventor of RSI, Parabolic SAR and Average Directional Index—tools for more than a month, you will quickly notice something very unusual. Unlike the always consistent measurements of mechanical engineering, Mr. Wilder’s indicators will often provide diametrically opposite signals.

RSI, for example, is often used as a proxy for overbought and oversold conditions with 70 suggesting that an asset is in overbought territory and 30 indicating that it is oversold. But sometimes  the RSI value of 70 is the perfect place to buy as it signals massive momentum strength and RSI value of 30 is the perfect place to sell, as it signals the start of a complete collapse of price.

Every signal has its own binary opposite

That’s because price action, unlike mechanical engineering, does not follow the rules of Newtonian physics, but the undulating waves of human behavior which is always interpretive. This means that every single aspect of technical analysis contains its own binary opposite.

Double  tops can become a support zone for further breakouts and so could head and shoulders patterns and everything else. In short, in technical analysis, every conventional buy signal can become a perfect sell set up and vice versa. All of it depends on what type of price regime is dominating trade at the moment.

Technical analysis is context dependent

As I’ve written a million times, there are only two types of trades that exist in the markets—continuation and mean reversion. You don’t even need to spend years of pouring over charts to understand this dynamic. Just take a look at stock index futures over a 24-hour cycle as I do every day. 

During the Asian and early European sessions when liquidity is low and participation is muted, prices tend to trade in relatively narrow and well-defined ranges. Selling tops and buying bottoms—a classic mean reversion technique—generally works well.

From around 0700 NY time, when the North American corps comes online, the price movement begins to extend significantly and continuation trades work much better.

Does that mean all technical analysis is useless and that all of Wells Wilder’s work is meaningless? Only if you believe that the function of technical analysis is to provide trade signals.

But technical analysis can’t provide signals any more than fundamental analysis can. Both disciplines simply provide analysis which must then be anchored in the proper market regime. At best, technical analysis provides a probabilistic edge, but only if we apply it with skill. 

It's value is in smoothing data for better pattern recognition

Wilder’s great accomplishment was to tame raw price action by smoothing and ranking the data points so that the trader could quickly understand its meaning. Every evolutionary biologist will tell you that after spending millions of years on the African savannah, we humans have developed a very refined sense of patterns.

Pattern recognition is all we do. In trading and in life.

Wilder’s great contribution was to design highly intuitive indicators that helped us to identify those patterns. If you’ve ever developed your own indicators, as I have, then you know just how valuable a truly clean looking indicator can be in helping you assess both opportunities and pitfalls in the market.

For that we should all be grateful. 

RIP Mr. Wilder. 

The True Value Of Indicators
 

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The True Value Of Indicators

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