CSPX vs IVV: how much do they overlap?
iShares Core S&P 500 UCITS ETF (USD Acc) (CSPX) · iShares Core S&P 500 ETF (IVV)
CSPX and IVV overlap by 89.6% by portfolio weight. In practical terms, about 10.4% of the smaller-weighted exposure is different between the two funds. They share 487 stocks; the largest shared position is Nvidia Corp (NVDA), contributing 7.56% to the overlap.
overlap by weight · 487 shared holdings
CSPX: 503 holdings (as of 2026-08-04) · IVV: 503 holdings (as of 2026-03-31)
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.
High overlap
What this means
CSPX and IVV 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 CSPX | in IVV |
|---|---|---|---|
| Nvidia Corp | NVDA | 7.7% | 7.56% |
| Apple Inc | AAPL | 6.82% | 6.65% |
| Microsoft | MSFT | 5.49% | 4.91% |
| Amazon.Com Inc | AMZN | 4.08% | 3.63% |
| Alphabet Class A | GOOGL | 3.32% | 2.99% |
| Broadcom Inc | AVGO | 2.97% | 2.62% |
| Alphabet Class C | GOOG | 2.66% | 2.39% |
| Meta Platforms Class A | META | 1.94% | 2.23% |
| Jpmorgan Chase & Co | JPM | 1.44% | 1.42% |
| Tesla Inc | TSLA | 1.38% | 1.87% |
FAQ
How much do CSPX and IVV overlap?
CSPX and IVV have a 89.6% overlap by weight, sharing 487 holdings (out of 503 in CSPX and 503 in IVV), based on official issuer holdings as of 2026-08-04.
What does 89.6% overlap mean?
CSPX and IVV are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Which stocks do CSPX and IVV both hold?
The largest shared positions are Nvidia Corp, Apple Inc, Microsoft, Amazon.Com Inc, Alphabet Class A. The full list of top shared holdings with weights in each fund is shown on this page.