When NDX Drops Big On A Day SPX Posts An Intraday High

It was interesting that the new intraday high Wednesday for SPX came on a day when NDX had its worst day since August. The study below looks at other instances of a 50-day high for SPX and the biggest drop in 50-days for NDX.

2017-11-30

Results are fairly impressive, and suggest a bullish edge based on limited instances. It is notable that every instance had a run-up of at least 4.8%, and the largest drawdown was under 3.2%. So yesterday’s SPX/NDX action appears to be potentially favorable for the intermediate-term.

 

 

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About the author:

Rob Hanna is the founder of Quantifiable Edges, a quantitative market research service he has run since 2008. His research focuses on statistical analysis of U.S. equity markets. In 2009 he published "The Quantifiable Edges Guide to Fed Days," available on Amazon. He was named the 2024 recipient of the National Association of Active Investment Managers (NAAIM) Founders Award and has since joined the NAAIM Board of Directors. Rob also works with Capital Advisors 360 as an investment advisor representative, where he utilizes quantitative and volatility-based models. Follow him on X / Bluesky / StockTwits / Facebook / Substack