etf overlap · moderate overlap

iShares Core S&P 500 ETF logoSPDR Dow Jones Industrial Average ETF logoIVV vs DIA overlap

29% of IVV and DIA is the same money, spread over 30 companies both funds hold.

Holdings as of September 24, 2026 · source: iShares (IVV), SPDR (DIA)

overlapfull holdings, by weight
29%of each fund is money the other holds at the same weight, across 30 shared companies.
IVV
29%10%61%
DIA
29%71%
  • 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 30
companyIVVDIA
MICROSOFT logoMSFTMICROSOFT5.56%5.76%
APPLE logoAAPLAPPLE7.37%3.89%
ALPHABET CLASS A logoGOOGLALPHABET CLASS A3.02%3.96%
AMAZON.COM INC logoAMZNAMAZON.COM INC3.68%2.89%
NVIDIA logoNVDANVIDIA8.18%2.60%
JPMORGAN CHASE & CO logoJPMJPMORGAN CHASE & CO1.35%3.92%
JOHNSON & JOHNSON logoJNJJOHNSON & JOHNSON0.98%3.13%
VISA CLASS A logoVVISA CLASS A0.94%4.26%
WALMART logoWMTWALMART0.72%1.24%
CISCO SYSTEMS INC logoCSCOCISCO SYSTEMS INC0.63%1.24%
CHEVRON logoCVXCHEVRON0.61%2.38%
CATERPILLAR INC logoCATCATERPILLAR INC0.56%9.32%
MERCK & CO INC logoMRKMERCK & CO INC0.55%1.71%
COCA-COLA logoKOCOCA-COLA0.51%1.02%
PROCTER & GAMBLE logoPGPROCTER & GAMBLE0.51%1.69%
02Different

What only one of them gives you

only in IVV473 names
META PLATFORMS CLASS A logoMETAMETA PLATFORMS CLASS A2.58%
BROADCOM INC logoAVGOBROADCOM INC2.51%
ALPHABET CLASS C logoGOOGALPHABET CLASS C2.42%
MICRON TECHNOLOGY logoMUMICRON TECHNOLOGY1.84%
TESLA INC logoTSLATESLA INC1.60%
ADVANCED MICRO DEVICES logoAMDADVANCED MICRO DEVICES1.55%
ELI LILLY logoLLYELI LILLY1.42%
BERKSHIRE HATHAWAY INC CLASS B logoBRK-BBERKSHIRE HATHAWAY INC CLASS B1.42%
only in DIA0 names

Every DIA holding is also in the other fund.

03Sectors

Where each fund puts its money

sectorsIVV vs DIA, share of each fund
Information Technology39.15%18.87%
Financials11.56%26.59%
Industrials8.07%15.98%
Health Care9.27%13.88%
Consumer Discretionary8.65%9.43%
Communication Services10.06%5.18%
Consumer Staples4.39%3.95%
Energy3.42%2.38%
Materials1.72%3.71%
Utilities1.86%0.00%
Real Estate1.72%0.00%
04Questions

IVV and DIA: what people ask

questions4 answered

How much do IVV and DIA overlap?

29% by weight, as of September 24, 2026: moderate overlap. 30 companies appear in both funds; they make up 39% of IVV and 100% of DIA.

Which stocks do IVV and DIA both hold?

The largest shared positions are MSFT, AAPL, GOOGL, AMZN and NVDA. Ranked by the smaller of the two weights, which is the part you would own twice.

Is it redundant to hold both IVV and DIA?

Out of every $100 split evenly between them, about $29 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 473 names only in IVV, 0 only in DIA. 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 iShares and SPDR publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart.

Hold IVV and DIA?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.