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.

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

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

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

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

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

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

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

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