The Investment Enigma of Moving Averages

In the world of finance, moving averages are often heralded as a Holy Grail for investors seeking stable returns. But is there more than meets the eye? Let's delve into this analysis to uncover whether they truly live up to their reputation or if they're just a fairy tale we tell ourselves.

The 10-month Moving Average Crossover (MAC) system has shown promise by dodging bear markets in 2000 and 2008, but its effectiveness is not without question. This raises the critical inquiry: does this strategy hold up over longer historical periods?

The Crux of MAC System: A Closer Look at Historical Data

The Moving Average Crossover system might seem like a simple concept—buy when prices rise above their moving average and sell when they dip below. But its application is anything but straightforward, particularly concerning the length of the averaging period.

To dissect this further, an extensive review of MAC's performance over a span of 138 years for the S&P500 total return index was conducted. The results were intriguing: CAGRs below 11 months consistently outperformed buy-and-hold strategies, but as the averaging period increased beyond that threshold, diminishing returns became evident.

Portfolio Implications: Weighing Risks and Opportunities

For investors considering incorporating MAC into their portfolios—which could include assets like C, GS, UNG, BAC, or MS—it's crucial to understand the balance of risks and opportunities. A shorter averaging period might offer quicker signals but comes with increased volatility. Conversely, a longer averaging period may provide smoother returns at the cost of timeliness.

The Verdict: Is MAC Your Investment Savior?

In conclusion, while the Moving Average Crossover system has demonstrated success in certain conditions, its effectiveness is not universal. It's essential for investors to consider their risk tolerance and investment horizon when evaluating this strategy as part of a broader portfolio management approach.