MABI: Unlocking Hidden Patterns

Finance Published: March 12, 2013
BACIEFQUAL

Unlocking the Hidden Patterns in Market Movement

A market that is "going nowhere" can be a treasure trove of valuable information for investors. According to Norman Fosback's classic book "Stock Market Logic," markets tend to boom quickly but form tops over long periods of time. This concept, known as the "Going Nowhere" Indicators, is based on market breadth and has been surprisingly effective even in today's markets.

The underlying premise is that by analyzing the differential velocity between bull and bear markets, one can derive useful information about the market's behavior. Bull markets tend to have long, protracted rises, while bear markets are characterized by short, sharp declines followed by wild rallies. During bull markets, tops often form slowly, with neither advancers nor decliners gaining the upper hand for extended periods.

The Evolution of Market Breadth Indicators

One popular approach to measuring market breadth is the Absolute Breadth Index (ABI). This indicator takes the 10-week average of the absolute value of the difference between advancers and decliners divided by total issues traded. High readings above 40% are considered bullish, while readings below 15% are seen as bearish. However, this approach has its limitations, as it becomes inconsistent over time due to changes in relative frequency.

The Modified Absolute Breadth Index (MABI), introduced by CSSA, addresses these limitations by taking a daily vs weekly reading of the differential and using a 50-day average. Additionally, the PERCENTRANK function is employed with a lookback period of 4 years to encompass an average cycle of the differential. This approach provides a more nuanced understanding of market breadth and its implications for investors.

The MABI Indicator: A Closer Look

A thorough examination of the MABI indicator reveals that it can accurately separate good and bad periods in the market over the last 35 years. The performance of MABI is particularly impressive, with a CAGR (Compound Annual Growth Rate) of 5.30% for readings above .5 and -3.50% for readings below .5. What's interesting is that when MABI was lower than .2, the market performed poorly, while readings far above .5 were more inconsistent.

The primary purpose of MABI is to serve as an uncorrelated indicator, helping investors identify intermediate to longer-term tops and bottoms. It can be thought of as holding a stethoscope to the market's heartbeat, detecting divergences that are not captured by standard indicators. Furthermore, MABI provides valuable information about the market's velocity, which is essential for making informed investment decisions.

Portfolio Implications: A Closer Look at C, BAC, IEF, MS, and QUAL

The implications of MABI on portfolio management are significant. By incorporating this indicator into their investment strategy, investors can potentially reduce risk and increase returns. For example, during periods when MABI is above .5, the market tends to perform well, making it an attractive time to invest in assets like C (Citigroup) or BAC (Bank of America). Conversely, when MABI is below .2, the market tends to underperform, making it a good time to avoid these assets.

A more conservative approach might be to allocate 20% of the portfolio to assets like IEF (iShares 3-7 Year Treasury Bond ETF) or MS (Morgan Stanley), which tend to perform well during periods when MABI is below .5. On the other hand, a more aggressive approach might involve investing in QUAL (VanEck Vectors Semiconductor ETF) or other high-growth assets that tend to perform well during periods when MABI is above .5.

Practical Implementation: Timing Considerations and Entry/Exit Strategies

While MABI provides valuable insights into market behavior, its implementation requires careful consideration of timing and entry/exit strategies. One approach might involve using MABI as a filter for investment decisions, only investing in assets that meet certain criteria based on the indicator's readings.

Another approach might involve using MABI to identify potential entry points, such as when the indicator is above .5 or below .2. In either case, it's essential to combine MABI with other indicators and risk management strategies to ensure a well-diversified portfolio.

Actionable Conclusion: Synthesizing Key Insights

In conclusion, the Modified Absolute Breadth Index (MABI) offers a valuable tool for investors seeking to better understand market behavior. By incorporating this indicator into their investment strategy, investors can potentially reduce risk and increase returns. While MABI is not a panacea, it can be used in conjunction with other indicators and risk management strategies to create a more robust investment approach.

Ultimately, the key to successful investing lies in combining multiple sources of information and using them to inform investment decisions. By doing so, investors can potentially achieve better outcomes and navigate even the most challenging market conditions.