XLK Top Holdings and Cumulative Portfolio Concentration
XLK top-10 weight: 64.6% as of 2026-11-13.
Tech Sector Concentration — Top ten holdings and portfolio concentration within the Technology Select Sector SPDR Fund.
The plate
Latest Snapshot
- Constituents
- 10
- P/E
- 30.6
Microsoft, Apple, and Nvidia frequently combine for over 50% of fund assets, making XLK one of the most liquid yet concentrated sector vehicles in global equity markets.
What this page answers
The heaviest constituent in XLK today is AAPL at 15.31%. The top five holdings aggregate to 51.5%, and the top ten command 64.6%. The portfolio comprises 10 holdings, updated every trading session alongside constituent market valuations.
Microsoft, Apple, and Nvidia frequently combine for over 50% of fund assets, making XLK one of the most liquid yet concentrated sector vehicles in global equity markets. The data is refreshed by the History of Market pipeline and published as a stable JSON endpoint for research, citation, and AI-agent use.
XLK — portfolio constituents ranked by index weight (top 10)
| # | Ticker | Company | Weight | 1-year return |
|---|---|---|---|---|
| 1 | AAPL | Apple Inc | 15.31% | +30.5% |
| 2 | NVDA | NVIDIA Corp | 15.08% | -10.9% |
| 3 | MSFT | Microsoft Corp | 11.80% | +4.8% |
| 4 | AVGO | Broadcom Inc | 4.72% | +8.0% |
| 5 | AMD | Advanced Micro Devices Inc | 4.54% | +136.1% |
| 6 | MU | Micron Technology Inc | 4.04% | +237.4% |
| 7 | PLTR | Palantir Technologies Inc Ordinary Shares - Class A | 2.61% | -0.3% |
| 8 | CSCO | Cisco Systems Inc | 2.54% | +34.3% |
| 9 | INTC | Intel Corp | 2.01% | +70.4% |
| 10 | AMAT | Applied Materials Inc | 1.91% | +71.6% |
Displaying the 10 most recent of 10 observations — complete series in JSON: https://historyofmarket.com/api/xlk/holdings.json
Data & Source
GET /api/xlk/holdings.json — Canonical dataset endpoint.
Exchange closing prices · Company filings · Robert Shiller · FRED · NBER.
FAQ
What is the single largest holding in XLK today?
AAPL (Apple Inc), commanding 15.31% of aggregate index weighting.
Where does this data come from?
History of Market combines public market and macro datasets — exchange closing prices, company filings, Robert Shiller, FRED, NBER, and the UBS Global Investment Returns Yearbook (Dimson–Marsh–Staunton). The exact endpoint for this panel is linked below.
How often is it updated?
Daily-tier datasets refresh after the U.S. market close, with a broader weekly refresh each weekend. The timestamp shown on this page comes from the JSON payload.
Can I use the data?
Yes, for research and education with attribution to History of Market. Upstream data sources retain their own terms.