# XLK Top Holdings and Cumulative Portfolio Concentration

Source: https://historyofmarket.com/xlk/xlk-holdings/
Language: en
License: data CC BY 4.0, text © History of Market — cite "History of Market (historyofmarket.com)" and link the source page. Terms: https://historyofmarket.com/license/
Section: History of Market › Information Technology › 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.

Figure: Plate IV.5 · 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.

## Latest Snapshot

- **Constituents** — 10
- **P/E** — 30.6

## 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.

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](https://historyofmarket.com/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.

## Related charts and reading

- [XLF Core Holdings and Weight Distribution](https://historyofmarket.com/fin/fin-holdings/) — Financials
- [XLY and XLP Top Holdings Side by Side: Two Very Different Concentrations](https://historyofmarket.com/consumer/consumer-holdings/) — Consumer
- [Information Technology Forward P/E Multiple Since 1998](https://historyofmarket.com/xlk/xlk-fwdpe/)

---

Data: https://historyofmarket.com/api/xlk/holdings.json
Machine index: https://historyofmarket.com/llms.txt