ITOT vs IWDA: how much do they overlap?
iShares Core S&P Total U.S. Stock Market ETF (ITOT) · iShares Core MSCI World UCITS ETF (USD Acc) (IWDA)
ITOT and IWDA overlap by 68.4% by portfolio weight. In practical terms, about 31.6% of the smaller-weighted exposure is different between the two funds. They share 512 stocks; the largest shared position is NVIDIA Corp. (NVDA), contributing 5.31% to the overlap.
overlap by weight · 512 shared holdings
ITOT: 2470 holdings (as of 2026-03-31) · IWDA: 1224 holdings (as of 2026-08-04)
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 2026-08-04.
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
Moderate overlap
What this means
ITOT and IWDA share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
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 IWDA |
|---|---|---|---|
| NVIDIA Corp. | NVDA | 6.69% | 5.31% |
| Apple, Inc. | AAPL | 5.88% | 4.93% |
| Microsoft Corp. | MSFT | 4.34% | 3.77% |
| Amazon.com, Inc. | AMZN | 3.21% | 2.91% |
| Alphabet, Inc. | GOOGL | 2.64% | 2.38% |
| Broadcom, Inc. | AVGO | 2.32% | 2.04% |
| Alphabet, Inc. | GOOG | 2.12% | 1.88% |
| Meta Platforms, Inc. | META | 1.98% | 1.4% |
| JPMorgan Chase & Co. | JPM | 1.25% | 1.04% |
| Tesla, Inc. | TSLA | 1.65% | 1% |
FAQ
How much do ITOT and IWDA overlap?
ITOT and IWDA have a 68.4% overlap by weight, sharing 512 holdings (out of 2470 in ITOT and 1224 in IWDA), based on official issuer holdings as of 2026-03-31.
What does 68.4% overlap mean?
ITOT and IWDA share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
Which stocks do ITOT and IWDA 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.