This 266-Day Midterm Window Has Delivered 9 of 9 Winners for Nasdaq 100 (NDX)

What is the seasonal pattern for Nasdaq 100 (NDX)?

Nasdaq 100 has risen in 9 of 9 midterm election-year windows starting around Jul 26, with an average gain of 19.28% in winning years.

How has Nasdaq 100 (NDX) traded in this midterm-to-pre-election window?

Nasdaq 100 has risen in all nine midterm election-year windows that start around Jul 26 and run for 266 calendar days, averaging 19.28% gains with a long bias. The index closed Tuesday at 29,173.02, down 1.77% on the day and sitting about 5.2% below its 52-week high of 30,762.20. That combination of a modest pullback and a historically powerful late-midterm seasonal pattern is why this window is on traders’ radar.

The presidential election cycle matters here because this pattern is built only from midterm election years, then carried forward into the following pre-election year. That aligns the seasonal window with a policy backdrop that has often featured a mix of mid-cycle fiscal adjustments and, later, a friendlier risk tone as the next presidential race comes into view.

Across the nine midterm cycles in the sample, every single iteration of this Nasdaq 100 trading window finished positive for a long position. Average gains of 19.28% and a median outcome of 21.26% show that the upside has not been driven by just one outlier year; the distribution is skewed toward solid double-digit returns rather than a few home runs and many small wins.

The per-year table shows how that strength has played out in different macro backdrops. In 1998, for example, the index returned 37.94% in this window with a maximum favorable move of 57.83% from entry, while still enduring a worst drawdown of 25.46% along the way. At the other end of the spectrum, 2018 delivered a modest 3.78% net gain, with the index up as much as 4.25% at its best point and down as much as 20.34% at its worst during the same stretch.

Those maximum favorable and adverse excursions, known as MFE and MAE, underline how volatile this midterm-to-pre-election window can be even when the final result is positive. Years like 1990 and 1998 combined strong net gains with deep intraperiod selloffs, while 1994 and 2006 saw cleaner paths where the worst drawdowns stayed under 1% despite healthy double-digit returns.

The historical seasonal trend chart shows a pattern of steady accumulation rather than a single burst. Gains tend to build through the back half of the midterm year, with additional follow-through as the calendar shifts into the pre-election year, echoing the broader tendency for pre-election years to be supportive for risk assets.

A closer look at yearly net returns alongside peak rallies and worst drawdowns shows how consistently the window has favored longs, even when the ride has been rough.

The combined net/MFE/MAE bars highlight a clear pattern: in most years, the index has enjoyed sizable rallies at some point in the window, but several cycles also saw double-digit drawdowns before finishing higher. Add it up: 373% cumulative return across the nine windows, but with enough downside volatility that position sizing and risk controls would have mattered.

History does not guarantee future results; adverse excursions (MAE) can be large even in winning windows.

Why does Nasdaq 100 (NDX) follow this seasonal pattern?

One likely driver is the way the earnings calendar and guidance cycles cluster for mega-cap technology and growth stocks in the back half of midterm years and into pre-election years. Analysts have pointed to institutional portfolio repositioning and index rebalancing around this phase, which can funnel flows into the largest Nasdaq 100 constituents. The pattern may also reflect a shift in policy tone as Washington moves from midterm outcomes toward the next presidential race, often easing some uncertainty and supporting risk appetite in growth-heavy benchmarks.

What is driving Nasdaq 100 (NDX) today?

Nasdaq 100 ended the prior session at 29,173.02, down 524.85 points or 1.77%, after trading between 28,974.47 and 29,426.45 on the day. That leaves the index about 5.2% below its 52-week high of 30,762.20 and roughly 29.1% above its 52-week low of 22,587.47, with a one-month gain of 0.74% and price hovering just under its 50-day moving average of 29,246.30.

Under the surface, the story remains the same: this is still a technology and growth benchmark first. The Nasdaq 100 houses the biggest tech names, from chipmakers to cloud platforms, and serves as a barometer for how investors feel about long-duration earnings and innovation-heavy business models.^[1] Because large-cap technology dominates the index, sharp moves in a handful of mega caps can quickly swing the whole benchmark, especially on days when sector sentiment shifts together.^[1]

In Feb 2026, Nasdaq proposed a “fast entry” rule to speed up inclusion of large new listings into its flagship indices, a change that could affect how quickly fresh tech IPOs or spin-offs find their way into the Nasdaq 100 over time.^[1] While that rule is still part of the structural backdrop rather than a day-to-day driver, it underscores how index composition can evolve just as this historically strong seasonal window approaches.

The chart below situates the latest pullback and the upcoming seasonal window in the context of the past year’s trading range.

What should traders watch as this seasonal window opens?

First, the calendar: the 266-day window begins on Jul 26, so any acceleration in volatility or trend around late July and early August will be watched against the historical pattern. A firm hold above the recent low near 28,974 and a push back toward the 30,762.20 high would fit the typical midterm-to-pre-election seasonal trend, while a deeper break with expanding downside volume would mark a departure from prior cycles.

Second, the policy and macro backdrop that defines this phase of the presidential election cycle. Midterm years often bring legislative wrangling and regulatory noise, but as the market transitions into the pre-election year, history shows a tendency for risk appetite to improve, especially in growth-heavy benchmarks like the Nasdaq 100. Traders will be watching how rate expectations, fiscal headlines, and tech regulation debates line up with that usual pattern.

Third, sector leadership inside the index. Because large-cap technology exposure is so concentrated, whether mega-cap chips, software, or internet platforms lead or lag into year-end will likely determine how closely NDX tracks its historical seasonal trend.^[1] If leadership broadens beyond a narrow group of names, the seasonal window’s historical upside could be easier to express; if it narrows, the path may be choppier even if the final outcome is positive.

Finally, intraperiod swings. Past midterm windows have delivered both strong rallies and sharp drawdowns before finishing higher, so traders may focus less on day-to-day noise and more on whether the index respects key support zones while maintaining a constructive medium-term slope. How NDX behaves around those levels as the Jul 26 window opens will show whether this cycle is tracking the historical script or writing a new one.