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Sound Advice: October 2, 2024

Technical Analysis of Stocks Has No Value 

The effectiveness of technical analysis in stock trading is a subject of considerable debate. While some investors swear by it, others argue that it is of limited or no use. Here’s a rundown of why some critics believe technical analysis is less effective or "useless":

1. Lack of Fundamental Basis:

  • No Consideration of Company Fundamentals: Technical analysis focuses on historical price and volume data rather than the underlying financial health or business prospects of a company. Critics argue that this means it doesn’t account for fundamental factors that drive a company’s long-term performance.

2. Predictive Challenges:

  • Historical Data Limitations: Technical analysis is based on the premise that historical price patterns can predict future movements. Critics point out that past performance is not always indicative of future results, and patterns may not reliably predict future market behavior.

3. Randomness and Market Efficiency:

  • Efficient Market Hypothesis (EMH): According to EMH, stock prices already reflect all available information. If markets are efficient, then technical analysis should not provide any advantage, as any patterns or trends would already be priced in.

4. Self-Fulfilling Prophecies:

  • Market Psychology: Some argue that technical analysis may work because a significant number of traders follow similar patterns, making the predictions a self-fulfilling prophecy. If many traders act based on certain technical signals, their collective actions can influence prices. Even so, this is not a robust or consistent basis for long-term success.

5. Subjectivity and Inconsistency:

  • Interpretation Variability: Different technical analysts may interpret the same chart patterns differently, leading to inconsistent and subjective conclusions. This variability can undermine the reliability of technical analysis.

6. Over-Reliance on Patterns:

  • Pattern Recognition Limitations: Technical analysis often relies on recognizing patterns such as head and shoulders, support and resistance levels, or moving averages. Critics argue that these patterns are not always reliable and can be interpreted in multiple ways.

7. Short-Term Focus:

  • Focus on Timing: Technical analysis often emphasizes short-term price movements and market timing, which can be challenging to master consistently. Long-term investing strategies based on fundamental analysis may provide a more stable approach.

8. Potential for Over-Trading:

  • Frequent Trading Risks: Technical analysis can lead to over-trading based on short-term signals, which may increase transaction costs and reduce overall investment returns. 

Despite the fact that there’s even a hefty textbook on the subject of technical analysis by Robert Edwards & John Magee, there have never been any legitimate studies supporting the claims made by the subject’s proponents.  Indeed, much of technical analysis resembles the patterns on old boxes of Whitman’s Sampler chocolates.

N. Russell Wayne

Weston, CT  06883

203-895-8877

www.soundasset.blogspot.com

 

 

 

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