Bull Markets Last Longer Than You Think - Historical Analysis of Bull Market Durations

  

Bull Markets Last Longer Than You Think - Historical Analysis of Bull Market Durations

Historical Duration of Bull Markets and Current Market Situation



The graph above, provided by Carson Investment Research, shows the historical duration of bull markets (in months) and when they started. Shared by Ryan Detrick, this chart analyzes bull market patterns in the U.S. stock market from 1949 to the present.

Analysis of Historical Bull Market Durations

Looking closely at the graph, we can see significant variations in the duration of past bull markets:

  • The longest bull market started in December 1987 and lasted approximately 148 months (over 12 years).
  • The second longest bull market began in March 2009 and continued for about 131 months (nearly 11 years).
  • The shortest bull market started in March 2020 and lasted only about 21 months.
  • The bull market that began in June 1949 continued for 86 months, while the one starting in October 1974 lasted 74 months.

Characteristics and Outlook of the Current Bull Market

The current bull market began in October 2022 and has been ongoing for about 28 months as of May 2025. This is considerably shorter than the historical average of 67 months and the median of 60 months.

Interestingly, the current bull market has narrowly avoided entering bear market territory (a decline of 20% or more). This pattern is similar to market conditions in 1990, 2011, and 2018. These similarities suggest that the current bull market is still in its "young" phase.

Cases of Bull Markets Nearly Entering Bear Territory

The current market has declined approximately 12% from its peak since March 2025 according to the Morningstar US Market Index, but hasn't reached the 20% threshold that defines a bear market. This resembles several historical instances where bull markets narrowly avoided entering bear territory:

  1. 1990 Bull Market: Almost entered bear market territory but recovered
  2. 2011 Bull Market: Defended against bear market entry despite the European debt crisis
  3. 2018 Bull Market: Rebounded from the bear market threshold amid interest rate hikes and trade tensions

Analysis of Historical Long-Term Bull Markets

The longest bull market in history lasted 131 months, from March 2009 to February 2020, during which the S&P 500 index rose more than 300%. This extended bull market displayed the following characteristics:

  • Prolonged low-interest-rate environment
  • Consistent growth in corporate earnings
  • Rapid expansion of the technology sector
  • Global economic recovery

Current Economic Conditions and Future Outlook

As of 2025, the economy is showing signs of slowing growth, and according to Morningstar analysis, the probability of a recession within the next 12-18 months is forecast at 40-50%. However, considering historical patterns, the current bull market still has significant growth potential compared to the average duration of 67 months.

Implications for Investors

This historical data offers important insights for investors:

  1. Bull markets tend to last longer than generally perceived.
  2. Market corrections or short-term declines don't necessarily signal the end of a bull market.
  3. The current bull market is likely still in its early stages compared to the average duration.
  4. Historical patterns emphasize the importance of long-term investing.

Conclusion

According to Ryan Detrick's analysis, the current bull market is still in its youth and, considering historical averages, may continue for a considerable period. Of course, each bull market has unique characteristics and is influenced by various factors including economic and political environments, interest rate policies, and corporate performance. Investors should reference these historical patterns while developing investment strategies that comprehensively consider current market conditions and risk factors.

Source: Ryan Detrick's X.com Post

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