SPX 500: Second sign of downside volatility emerges, odds of medium-term corrective decline increase

  • Bearish reversal detected below 5,930 key medium-term resistance of the SPX 500.
  • Market breadth indicator (% of component stocks above 20-day and 50-day moving averages) has deteriorated.
  • The odds have increased for a medium-term corrective decline on the SPX 500 as the key US presidential election risk event looms on 5 November.

This is a follow-up analysis of our prior report SPX 500: First sign of volatility detected” published on 16 October 2024. Click here for a recap.

Since our last publication, the S&P 500 has reversed down by 3% from its current all-time high of 5,878 printed on 17 October, and right below the 5,930 key medium-term resistance highlighted earlier. It also ended October with a monthly loss of almost 1% dragged down by lackluster revenue guidance from three mega-cap technology stocks: Microsoft, Meta Platforms, and Apple.

Market breadth has turned weak

Fig 1: % of S&P 500 & Nasdaq 100 component stocks trading above 20-day & 50-day moving averages of 31 Oct 2024 (Source: TradingView)

One of the market breadth measurements on the S&P 500 has turned weak where the percentage of its component stocks trading above their respective 20-day and 50-day moving averages have turned southward bound.

The percentage of S&P 500 component stocks trading above their 20-day moving averages has declined sharply from 72% to 32% within two weeks.

A similar observation can also be seen in the percentage of S&P 500 component stocks trading above 50-day moving averages as it dropped from 77% to 47% over the same period (see Fig 1).

The rapid deterioration seen in these market breadth indicators of the S&P 500 to breach below their respective 50% levels has suggested that the medium-term uptrend phase of the S&P 500 has been damaged ahead of next week’s key US presidential election polling day on 5 November.

Bearish breakdown of “Ascending Wedge”

Fig 2: Medium-term & major trends of the US S&P 500 CFD Index as of 1 Nov 2024 (Source: TradingView)

Thursday, 31 October price actions seen on the US S&P 500 CFD Index (a proxy of the S&P 500 E-mini futures) have staged a bearish breakdown below the bearish reversal “Ascending Wedge” support from 5 August 2024 swing low now turns an intermediate pull-back resistance at 5,811.

In addition, the MACD trend indicator traced out a prior bearish divergence condition earlier on 23 October after a similar bearish divergence flashed out on the leading MACD Histogram a week earlier on 14 October.

These observations suggest that the US S&P 500 CFD Index may have formed a medium-term top and is in the process of shaping a potential medium-term (multi-week) corrective decline sequence.

Watch the 5,930 key medium-term pivotal resistance, and a breakdown with a daily close below 5,675 (close to the 50-day moving average) sees the next medium-term supports coming in at 5,390 (also the 200-day moving average) and 5,100.

On the other hand, a clearance with a daily close above 5,930 invalidates the bearish tone to expose the next medium-term resistances at 6,110/130 and 6,390 (also the upper boundary of the major ascending channel from March 2020 low).

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Kelvin Wong

Kelvin Wong

Senior Market Analyst, OANDA at OANDA
Based in Singapore, Kelvin Wong is a well-established senior global macro strategist with over 15 years of experience trading and providing market research on foreign exchange, stock markets, and commodities.

Passionate about connecting the dots in the financial markets and sharing perspectives around trading and investment, Kelvin Wong is an expert in using a unique combination of fundamental and technical analyses, specializing in Elliott Wave and fund flow positioning, to pinpoint key reversal levels in the financial markets.

In addition, over the last ten years, Kelvin has conducted numerous market outlook and trading-related seminars, as well as technical analysis training courses, for thousands of retail traders.