CSPX vs IWDA ETF holdings comparison
iShares Core S&P 500 UCITS ETF (USD Acc) (CSPX) · iShares Core MSCI World UCITS ETF (USD Acc) (IWDA)
CSPX and IWDA overlap by 70% by portfolio weight. The remaining 30.0 percentage points are not counted as shared holdings weight by this calculation. They share 438 stocks; the largest shared position is Nvidia (NVDA), contributing 5.53% to the overlap.
What this means
CSPX and IWDA share most of their portfolio weight in the same underlying stocks. OverlapCheck labels this "high holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
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.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in CSPX | in IWDA |
|---|---|---|---|
| Nvidia | NVDA | 8.07% | 5.53% |
| Apple | AAPL | 7.02% | 5.07% |
| Microsoft | MSFT | 5.69% | 3.90% |
| Amazon.Com Inc | AMZN | 3.84% | 2.74% |
| Alphabet Class A | GOOGL | 3.00% | 2.17% |
| Broadcom Inc | AVGO | 2.65% | 1.82% |
| Alphabet Class C | GOOG | 2.39% | 1.71% |
| Meta Platforms Class A | META | 1.90% | 1.37% |
| Micron Technology | MU | 1.63% | 1.18% |
| Tesla Inc | TSLA | 1.56% | 1.15% |
Holdings only in CSPX or IWDA
CSPX has 65 fund-only positions representing approximately 1.2 percentage points of reported exposure; IWDA has 773 fund-only positions representing approximately 29.8 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in CSPX
| Company | Ticker | Weight |
|---|---|---|
| Moderna | MRNA | 0.07% |
| Southwest Airlines | LUV | 0.03% |
| Zebra Technologies Corp Class A | ZBRA | 0.03% |
| Viatris | VTRS | 0.03% |
| Camden Property Trust Reit | CPT | 0.02% |
| Charles River Laboratories Interna | CRL | 0.02% |
| Clorox | CLX | 0.02% |
| Factset Research Systems | FDS | 0.02% |
| Franklin Templeton | BEN | 0.02% |
| Gartner | IT | 0.02% |
Largest positions only in IWDA
| Company | Ticker | Weight |
|---|---|---|
| Asml Holding | ASML | 0.71% |
| Hsbc Holdings Plc | HSBA | 0.38% |
| Roche Ps Par Ag | ROP | 0.33% |
| Royal Bank Of Canada | RY | 0.31% |
| Novartis Ag | NOVN | 0.30% |
| Shell Plc | SHEL | 0.28% |
| Mitsubishi Ufj Financial Group | 8306 | 0.27% |
| Astrazeneca Plc | AZN | 0.27% |
| Nestle Sa | NESN | 0.27% |
| Siemens N Ag | SIE | 0.26% |
FAQ
How much do CSPX and IWDA overlap?
CSPX and IWDA have 70% overlap by weight, sharing 438 equity positions (out of 503 in CSPX and 1211 in IWDA). The official holdings files used are dated 2026-08-31 for CSPX and 2026-08-31 for IWDA.
What does 70% overlap mean?
CSPX and IWDA share most of their portfolio weight in the same underlying stocks. OverlapCheck labels this "high holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do CSPX and IWDA both hold?
The largest shared positions are Nvidia, Apple, Microsoft, Amazon.Com Inc, Alphabet Class A. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between CSPX and IWDA?
CSPX has 65 positions not found in IWDA, while IWDA has 773 positions not found in CSPX. The largest fund-only positions and their weights are shown on this page.
Related comparisons
Both funds here are UCITS ETFs. How share classes and listings map to one fund, and which popular UCITS combinations repeat the same US mega-caps, is covered in ETF overlap for European investors.