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A closer look at 9 straight up closes for the Nasdaq 100

Jay Kaeppel
2025-09-16

Despite all the surrounding angst, worry, and upheaval, the Nasdaq 100 Index (NDX) closed higher on September 15th for the ninth consecutive trading day. Does this have any meaning for future results? We decided to run the numbers.

The chart below highlights all dates since 1985 when NDX closed higher for a ninth consecutive day.

The table below displays NDX performance following each of the dates highlighted above.

The table below summarizes NDX performance following the ninth consecutive higher close.

Finally, the tables below display performance for the various S&P 500 sectors following a ninth consecutive higher NDX close.

Does this have any meaning for future results? We report; you decide.

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Risk Disclosure: The information and tools provided are for research and analytical purposes only and are not intended as investment advice. Market analysis involves uncertainty, and outcomes may differ from expectations. Users should conduct their own due diligence and consider their individual circumstances before making any financial decisions. Past performance is not necessarily indicative of future results.

Hypothetical Performance Disclosure: Hypothetical performance results have many inherent limitations, some of which are described below. No representation is being made that any account will or is likely to achieve profits or losses similar to those shown; in fact, there are frequently sharp differences between hypothetical performance results and the actual results subsequently achieved by any particular trading program. One of the limitations of hypothetical performance results is that they are generally prepared with the benefit of hindsight. In addition, hypothetical trading does not involve financial risk, and no hypothetical trading record can completely account for the impact of financial risk of actual trading. for example, the ability to withstand losses or to adhere to a particular trading program in spite of trading losses are material points which can also adversely affect actual trading results. There are numerous other factors related to the markets in general or to the implementation of any specific trading program which cannot be fully accounted for in the preparation of hypothetical performance results and all which can adversely affect trading results.

Testimonial Disclosure: Testimonials appearing on this website may not be representative of other clients or customers and is not a guarantee of future performance or success.