Nasdaq-100
IndexNasdaq-100 concentration (2026)
The ten biggest companies in the Nasdaq-100 hold 49.4% of it as of Mar 2026 — up from 56.8% in Sep 2019. The top five hold 33.2%, and NVIDIA Corp. alone holds 8.7%. Weights are the index's own, from the tracking fund's quarterly SEC filings, so they reconcile with the constituents list.
Share of the index held by its largest members#
Each band is a rank slot, not a fixed company — band 1 is whoever is biggest in that filing. Hover to see who held each slot and at what weight. Switch between the top 1, 3, 5 and 10.
Share of Nasdaq-100 by index weight, as filed by the tracking fund each quarter. Bands are rank slots — the bottom band is whichever company is largest that period. Hover for names and weights.
Who is in the top ten now, and who was then#
| # | Mar 2026 | Weight | Sep 2019 | Weight |
|---|---|---|---|---|
| 1 | NVIDIA Corp. | 8.68% | Microsoft Corp. | 11.49% |
| 2 | Apple Inc. | 7.63% | Apple Inc. | 10.95% |
| 3 | Alphabet Inc. | 6.63% | Amazon.com, Inc. | 9.29% |
| 4 | Microsoft Corp. | 5.63% | Alphabet Inc. | 8.68% |
| 5 | Amazon.com, Inc. | 4.58% | Facebook, Inc. | 4.68% |
| 6 | Tesla, Inc. | 3.80% | Intel Corp. | 2.74% |
| 7 | Meta Platforms, Inc. | 3.46% | Cisco Systems, Inc. | 2.54% |
| 8 | Walmart Inc. | 3.43% | Comcast Corp. | 2.46% |
| 9 | Broadcom Inc. | 3.01% | PepsiCo, Inc. | 2.30% |
| 10 | Costco Wholesale Corp. | 2.50% | Adobe Inc. | 1.61% |
Into the top ten since Sep 2019: NVIDIA Corp., Tesla, Inc., Meta Platforms, Inc., Walmart Inc., Broadcom Inc., Costco Wholesale Corp.. Out of it: Facebook, Inc., Intel Corp., Cisco Systems, Inc., Comcast Corp., PepsiCo, Inc., Adobe Inc.. The largest member has changed too — Microsoft Corp. then, NVIDIA Corp. now. Arrivals and departures are matched by ticker, so a company that renamed or re-listed in between (Facebook to Meta) can show up on both lists.
FAQ
- How concentrated is the Nasdaq-100?
- The ten largest companies hold 49.4% of the index as of Mar 2026, and the largest alone (NVIDIA Corp.) holds 8.7%. In Sep 2019 the top ten held 56.8%, so the index has become less top-heavy over that span.
- When was Nasdaq-100 most concentrated?
- On the filings we hold, the top ten peaked at 60.8% in Jun 2023, against 49.4% now. Our weights run from Sep 2019 onward; for a longer, market-wide view of top-heaviness see the concentration visual.
- Does concentration make the index riskier?
- It makes it less diversified than the member count suggests: when ten names are a third of the index, the index's return is largely their return, and a sector shock that hits them hits everything. It is not a market-timing signal — concentration has risen for long stretches while the index compounded — but it does mean a cap-weighted position is a much more concentrated bet than "500 companies" sounds.
Weights are as filed by the tracking fund on Form N-PORT each quarter — the index's own weights, not a market-cap approximation — and a company's share classes are combined into one row, so “top ten” means ten companies. Our filings begin Sep 2019; for a longer view of how top-heavy the US market as a whole has become, measured monthly from market caps since 2010, see market concentration. See also the sector mix — the other way an index can be less diversified than its member count suggests. Not investment advice.
ChartRow is not affiliated with, sponsored by, or endorsed by S&P Dow Jones Indices LLC, S&P Global, or Nasdaq, Inc. "S&P 500®" and "Dow Jones®" are registered trademarks of S&P Dow Jones Indices LLC; "Nasdaq-100®" is a registered trademark of Nasdaq, Inc. They are used here only to identify the indexes discussed. All index-related figures on this page are independently derived from public sources — SEC filings, Robert Shiller's public dataset, and our own computations — not from any index provider's data feed.