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S&P500: Does Recent Surge In Breadth Signal New Secular Bull?

Published 02/17/2021, 06:36 PM
Updated 07/09/2023, 06:31 AM

One way to measure market breadth is to look at how many stocks in a particular index are above their 50-day Simple Moving Average or even above their 200-day SMA. Namely, the more there are, the stronger the market is because it is still a "market of stocks."

For the S&P 500, these two indicators are called the SPXA50R and SPXA200R. Individually they give a good idea if a market rally is strong (high readings) or weak (low readings).

Besides, one can also express market breadth as a ratio of the two: A50R/A200R. Namely, after a low in the index, the number of stocks rallying back above the faster responding 50-day SMA often outpaces those stocks rallying above the -slower responding- 200d SMA. Thus significant lows are hallmarked by big spikes in the ratio. I have data available for this ratio since 2002, so let us look at recent spikes. See figure 1 below.

Figure 1. S&P500 with the A50R/A200R ratio.

S&P500 With A50R/A200R Ratio.

The spike-high in 2009 sticks out as a sour thumb, so let us not focus on it yet. Based on my long-term Elliott Wave Principle count, that was a (purple) Cycle-4 degree low. Ever since, the SPX has, in my opinion, been in Cycle-5 and is getting closer and closer to wrapping this large wave up to complete (grey) Super Cycle-III. A wave of the same degree as the 1929 top.

The ratio's long-term average is around 0.9, and I defined ratio spikes when above 1.5 (orange) and 2 (green). These high ratios happened only in 2002, 2008, 2011, 2015, 2016, 2019 and 2020. The 2002 reading was 2.94, and the SPX started (blue) Primary-V of Cycle-3. The 2008 spike was 2.04 and marked only a short-term relief bounce in a bear market. The 2011 peak was 2.42, and the index started (black) major-3 of primary-III. The 2015 spike was 1.6 and marked only a short-term relief bounce in a more extensive correction. The 2016 peak was 1.7, and the market started major-5 of Primary-III. The 2019 spike was 1.8 and marked the start of a massive b-wave of Primary-IV. The 2020 peak was 2.56, and the market started Primary-V of Cycle-5.

Thus, excluding the 2009 spike, with three prior readings >2.0, there were two multi-year bull runs (2003 -> 2007, 2011 -> 2015) and only one bear market rally (2008). Odds thus favored a bull run from the 2020 spike, which we got and are still experiencing. The preferred EWP count for the current rally supports this finding. Thus, the 2020 low was, based on the A50R/A200R ratio, most likely not the start of a decadal bull market like 2009, but the beginning of a multi-year bull market.

Bottom line: Although limited data is available, surges in market breadth most often signal multi-year bull markets. However, not every surge is equal and needs to be placed in its proper perspective. The EWP could help us better understand this perspective, i.e., if a recent surge in the breadth was the start of a decades long-party or only part of a fest that had already started. In this case, the breadth surge off the 2020 low is similar to prior multi-year rallies and not that of a decadal low. My long-term EWP count supports this thesis. Hence, the SPX is currently in its final rally since the March 2009 low, and likely even since the July 1932 low.

Latest comments

This is great stuff.
thank you!
I do not find the argument compelling. 200 days ago, the market was deteriorating about to collapse. Certainly, every stock recovered since then, but it is NOT rally BUT recovery. It is not a bull market but cure market.
Doc: have we hit the top, per EW SC III? Or there still is more ********away bullish run to come?
Hi, no the markets need at least one more wave up, ideally to complete in the April-July time frame.
 Thanks Doc.  I always appreciate your insights; and responsiveness towards your readers!
Great research and analysis Dr. Arnoure. Thanks for sharing this.  I do believe that as soon as the correction from W5 starts fear will take investors so it might arrive to a 100% retracement from wave 5 o equal to the lowest point in March 2020. If the last were not able to support, we might go to   retracement fib161.8% where the reality of the hidden crisis (assets inflation, long term credit exhausted, productivity decrease) might reinforce fear. Of course this is more my fear's projection as a small retailer. I do not know what the big guys are thinking or projecting .  Best Regards.
Thank you.
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