etf overlap · moderate overlap

Technology Select Sector SPDR logoiShares Semiconductor ETF logoXLK vs SOXX overlap

37% of XLK and SOXX is the same money, spread over 17 companies both funds hold.

Holdings as of September 24, 2026 · source: SPDR (XLK), iShares (SOXX)

overlapfull holdings, by weight
37%of each fund is money the other holds at the same weight, across 17 shared companies.
XLK
37%55%
SOXX
37%44%19%
  • same money
  • same companies, extra weight
  • only in this fund
Overlap = the sum, over companies both funds hold, of the smaller of the two weights. Cash and derivatives excluded.
01Shared

The companies you would own twice

held by bothtop 15 of 17
companyXLKSOXX
NVIDIA CORP logoNVDANVIDIA CORP15.28%7.29%
INTEL CORP logoINTCINTEL CORP3.60%10.20%
KLA CORP logoKLACKLA CORP1.39%3.82%
MRMRVLMARVELL TECHNOLOGY INC1.29%4.39%
MPMPWRMONOLITHIC POWER SYSTEMS INC0.37%3.14%
TERADYNE INC logoTERTERADYNE INC0.35%2.98%
02Different

What only one of them gives you

only in XLK58 names
PALANTIR TECHNOLOGIES INC A logoPLTRPALANTIR TECHNOLOGIES INC A2.52%
CRCRWDCROWDSTRIKE HOLDINGS INC A1.51%
SNSNDKSANDISK CORP1.46%
only in SOXX13 names
SKSKHYSK HYNIX AMERICAN DEPOSITARY SHARE3.11%
ALALABASTERA LABS2.54%
CREDO TECHNOLOGY GROUP HOLDING LTD logoCRDOCREDO TECHNOLOGY GROUP HOLDING LTD1.64%
ASASMLASML HOLDING ADR REPRESENTING1.39%
TSTSEMTOWER SEMICONDUCTOR1.13%
ENENTGENTEGRIS INC1.12%
MTMTSIMACOM TECHNOLOGY SOLUTIONS1.00%
03Questions

XLK and SOXX: what people ask

questions4 answered

How much do XLK and SOXX overlap?

37% by weight, as of September 24, 2026: moderate overlap. 17 companies appear in both funds; they make up 45% of XLK and 81% of SOXX.

Which stocks do XLK and SOXX both hold?

The largest shared positions are NVDA, AMD, AVGO, MU and INTC. Ranked by the smaller of the two weights, which is the part you would own twice.

Is it redundant to hold both XLK and SOXX?

Out of every $100 split evenly between them, about $37 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 58 names only in XLK, 13 only in SOXX. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

How is ETF overlap calculated here?

For every company held by both funds we take the smaller of its two weights and add them up. The weights come from the full holdings files SPDR and iShares publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart.

Hold XLK and SOXX?Import your positions and see what your funds hold together, company by company, with the fees you pay on each.Import my portfolio

Weights come from each issuer's published holdings file and are matched company by company on their ISIN. Cash, futures and currency positions are left out. This page describes what the funds hold; it is not investment advice.