CSPX vs VUG ETF holdings comparison
iShares Core S&P 500 UCITS ETF (USD Acc) (CSPX) · Vanguard Growth ETF (VUG)
CSPX and VUG overlap by 56% by portfolio weight. The remaining 44.0 percentage points are not counted as shared holdings weight by this calculation. They share 123 stocks; the largest shared position is Apple (AAPL), contributing 7.92% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
CSPX and VUG share a material portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "moderate 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 VUG |
|---|---|---|---|
| Apple | AAPL | 7.92% | 11.67% |
| Nvidia | NVDA | 6.93% | 12.63% |
| Microsoft | MSFT | 6.28% | 7.61% |
| Amazon.Com Inc | AMZN | 4.03% | 4.47% |
| Alphabet Class A | GOOGL | 2.62% | 5.76% |
| Broadcom Inc | AVGO | 2.19% | 4.28% |
| Alphabet Class C | GOOG | 2.11% | 4.53% |
| Meta Platforms Class A | META | 2.10% | 3.41% |
| Eli Lilly | LLY | 1.72% | 2.81% |
| Tesla Inc | TSLA | 1.53% | 3.27% |
Holdings only in CSPX or VUG
CSPX has 380 fund-only positions representing approximately 43.9 percentage points of reported exposure; VUG has 23 fund-only positions representing approximately 2.3 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 |
|---|---|---|
| Berkshire Hathaway Inc Class B | BRK B | 1.68% |
| Jpmorgan Chase & Co | JPM | 1.41% |
| Micron Technology | MU | 1.17% |
| Exxonmobil Holdings Corp | XOM | 1.07% |
| Johnson & Johnson | JNJ | 1.04% |
| Walmart | WMT | 0.90% |
| Abbvie | ABBV | 0.80% |
| Chevron | CVX | 0.66% |
| Procter & Gamble | PG | 0.61% |
| Cisco Systems Inc | CSCO | 0.60% |
Largest positions only in VUG
| Company | Ticker | Weight |
|---|---|---|
| Space Exploration Technologies Corp | SPCX | 0.29% |
| Snowflake Inc | SNOW | 0.25% |
| Cloudflare Inc | NET | 0.23% |
| Rocket Lab Corp | RKLB | 0.18% |
| Waste Connections Inc | WCN | 0.14% |
| Alnylam Pharmaceuticals Inc | ALNY | 0.13% |
| Astera Labs Inc | ALAB | 0.12% |
| Coreweave Inc | CRWV | 0.12% |
| ROBLOX Corp | RBLX | 0.12% |
| MongoDB Inc | MDB | 0.09% |
FAQ
How much do CSPX and VUG overlap?
CSPX and VUG have 56% overlap by weight, sharing 123 equity positions (out of 503 in CSPX and 146 in VUG). The official holdings files used are dated 2026-11-05 for CSPX and 2026-06-30 for VUG.
What does 56% overlap mean?
CSPX and VUG share a material portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "moderate 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 VUG both hold?
The largest shared positions are Apple, Nvidia, 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 VUG?
CSPX has 380 positions not found in VUG, while VUG has 23 positions not found in CSPX. The largest fund-only positions and their weights are shown on this page.
Related comparisons
One side of this pair is a UCITS ETF. 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.