Upcoming Nasdaq-100 additions
Every change is announced days before it takes effect, and funds tracking the indexes must own the stock by the effective close. This page tracks that window: who is coming in, when, and how the stock is trading while the clock runs down.
Countdown to the effective close
No pending additions as of Sep 16, 2026
The index committee hasn't announced a change that is still waiting to take effect. New announcements show up here automatically with a live countdown — the most recent completed additions are below in the meantime.
Joined in the last 90 days
See what inclusion is worth →What usually happens after the bell
Measured from the effective-date close across 33 tracked Nasdaq-100 additions.
| Window | Average | Median | Positive | vs Nasdaq-100 |
|---|---|---|---|---|
| 1W | -1.6% | -1.6% | 39% | -7.3% |
| 1M | -2.7% | -5.8% | 28% | -3.2% |
| 3M | +2.2% | -5.0% | 48% | +1.1% |
| 6M | +25.7% | -3.9% | 45% | +11.7% |
| 1Y | -4.2% | -15.6% | 20% | -26.4% |
How Nasdaq-100 additions work
Nasdaq reconstitutes the index annually in December, effective after the close on the third Friday. Quarterly weight updates also take effect on the third Friday of March, June and September. A change is announced first and only takes effect after the close on the effective date. Between those two dates, every fund tracking the index (QQQ, QQQM) has to buy the incoming stock, which is why the window matters to traders.
Across the 33 Nasdaq-100 additions tracked here, the median notice between the announcement and the effective close is 0 days.
What happens to a stock after it joins Nasdaq-100
Inclusion is often described as a guaranteed pop. The tracked history is more mixed: the average stock ran up +11.3% in the 30 days into the effective close, then returned -1.6% in the first week (39% of additions were positive), -2.7% after one month, and -4.2% after a year. Returns are measured from the effective close and can also be viewed against the index itself, so a rising market doesn't get counted as an inclusion effect.
Best one-year outcome in this set: PLTR (Palantir Technologies) at +140.6%. Worst: TTD (The Trade Desk) at -69.2%.
When are Nasdaq-100 changes announced?
Annual reconstitution (December) + quarterly weight updates Scheduled review, announcement and effective dates for the next twelve months are listed on the index review calendar. Ad hoc changes — a takeover, a bankruptcy, a fast-track promotion — are announced outside that schedule, usually with a few days' notice.
Most recent Nasdaq-100 additions
- RBLX — Roblox joined the Nasdaq-100 on Sep 4, 2026, replacing Paccar.
- SPCX — SpaceX joined the Nasdaq-100 on Jul 1, 2026.
- HONA — Honeywell Aerospace joined the Nasdaq-100 on Jun 29, 2026.
- RKLB — Rocket Lab joined the Nasdaq-100 on Jun 22, 2026, replacing Verisk Analytics.
- TER — Teradyne joined the Nasdaq-100 on Jun 22, 2026, replacing Zscaler.