etf overlap · little overlap

Technology Select Sector SPDR logoARK Innovation ETF logoXLK vs ARKK overlap

9.7% of XLK and ARKK is the same money, spread over 5 companies both funds hold.

Holdings as of September 24, 2026 · source: SPDR (XLK), ARK Invest (ARKK)

overlapfull holdings, by weight
9.7%of each fund is money the other holds at the same weight, across 5 shared companies.
XLK
10%18%72%
ARKK
10%90%
  • 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 5 of 5
companyXLKARKK
PALANTIR TECHNOLOGIES INC A logoPLTRPALANTIR TECHNOLOGIES INC A2.52%2.69%
NVIDIA CORP logoNVDANVIDIA CORP15.28%2.37%
TERADYNE INC logoTERTERADYNE INC0.35%0.93%
02Different

What only one of them gives you

only in XLK70 names
only in ARKK40 names
SPSPCXSPACE EXPLORATION TECHN-CL A5.90%
TETEMTEMPUS AI INC-CL A5.89%
CRCRCLCIRCLE INTERNET GROUP INC5.03%
COINBASE GLOBAL INC -CLASS A logoCOINCOINBASE GLOBAL INC -CLASS A4.57%
CRCRSPCRISPR THERAPEUTICS AG4.36%
TWTWSTTWIST BIOSCIENCE CORP4.16%
HOHOODROBINHOOD MARKETS INC - A4.03%
03Sectors

Where each fund puts its money

sectorsXLK vs ARKK, share of each fund
Information Technology99.93%26.11%
Health Care0.00%22.31%
Consumer Discretionary0.00%11.34%
Financials0.00%11.32%
Communication Services0.00%9.65%
Industrials0.00%2.45%
Not classified0.00%16.15%
04Questions

XLK and ARKK: what people ask

questions4 answered

How much do XLK and ARKK overlap?

9.7% by weight, as of September 24, 2026: little overlap. 5 companies appear in both funds; they make up 28% of XLK and 10% of ARKK.

Which stocks do XLK and ARKK both hold?

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

Is it redundant to hold both XLK and ARKK?

Out of every $100 split evenly between them, about $10 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 70 names only in XLK, 40 only in ARKK. 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 ARK Invest publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart.

Hold XLK and ARKK?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.