ITOT vs VUAA: how much do they overlap?
iShares Core S&P Total U.S. Stock Market ETF (ITOT) · Vanguard S&P 500 UCITS ETF (USD Acc) (VUAA)
ITOT and VUAA overlap by 85% by portfolio weight. In practical terms, about 15.0% of the smaller-weighted exposure is different between the two funds. They share 498 stocks; the largest shared position is NVIDIA Corp. (NVDA), contributing 6.69% to the overlap.
overlap by weight · 498 shared holdings
ITOT: 2470 holdings (as of 2026-03-31) · VUAA: 503 holdings (as of 2026-06-30)
Holdings dates reflect the latest official files available for each issuer. Some issuers publish daily files; others are represented by periodic SEC filings. Analysis template updated 2026-07-18.
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
High overlap
What this means
ITOT and VUAA are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold — it answers "how much of my money is in the same stocks either way?" See methodology.
Top shared holdings
| Company | Ticker | in ITOT | in VUAA |
|---|---|---|---|
| NVIDIA Corp. | NVDA | 6.69% | 7.49% |
| Apple, Inc. | AAPL | 5.88% | 6.57% |
| Microsoft Corp. | MSFT | 4.34% | 4.28% |
| Amazon.com, Inc. | AMZN | 3.21% | 3.61% |
| Alphabet, Inc. | GOOGL | 2.64% | 3.24% |
| Broadcom, Inc. | AVGO | 2.32% | 2.77% |
| Alphabet, Inc. | GOOG | 2.12% | 2.58% |
| Meta Platforms, Inc. | META | 1.98% | 1.91% |
| Tesla, Inc. | TSLA | 1.65% | 1.83% |
| Berkshire Hathaway, Inc. | BRK.B | 1.39% | 1.42% |
FAQ
How much do ITOT and VUAA overlap?
ITOT and VUAA have a 85% overlap by weight, sharing 498 holdings (out of 2470 in ITOT and 503 in VUAA), based on official issuer holdings as of 2026-03-31.
What does 85% overlap mean?
ITOT and VUAA are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Which stocks do ITOT and VUAA both hold?
The largest shared positions are NVIDIA Corp., Apple, Inc., Microsoft Corp., Amazon.com, Inc., Alphabet, Inc.. The full list of top shared holdings with weights in each fund is shown on this page.