ETF and Mutual Fund Analysis

Holdings as of March 31, 2026 (CSPAX) and September 30, 2025 (ITOT)

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

Home > Compare > CSPAX vs ITOT Holdings as of March 31, 2026 (CSPAX) and September 30, 2025 (ITOT)

CSPAX vs ITOT: Portfolio Overlap

SMALLCAP World Fund Inc vs iShares Core S&P Total U.S. Stock Market ETF

3.1%
Weighted portfolio overlap
Low Overlap

Low Overlap. The two portfolios have highly distinct allocations: little of the weight sits in the same stocks.

CSPAX
815 equity holdings
as of March 31, 2026
ITOT
2484 equity holdings
as of September 30, 2025
306 stocks held in common
Overlap View Venn Diagram
3.1% OVERLAP CSPAX ITOT
Overlapping Holdings
10 Top 10 of 306 shared, by overlap contribution
# Stock CSPAX ITOT Overlap%
1
ALNY
 0.06% 0.09% 0.06%
2
INSM
 0.18% 0.05% 0.05%
3
FITB
 0.14% 0.05% 0.05%
4
FIX
 1.52% 0.05% 0.05%
5
LEN
 0.12% 0.04% 0.04%
6
DXCM
 0.11% 0.04% 0.04%
7
ALAB
 0.08% 0.04% 0.04%
8
MDB
 0.07% 0.04% 0.04%
9
NTRA
 0.10% 0.03% 0.03%
10
DRI
 0.08% 0.03% 0.03%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in CSPAX — SMALLCAP World Fund Inc
StockWeight
DIPLOMA PLC1.06%
Kokusai Electric Corp0.81%
Bombardier Inc0.72%
LUNDIN MINING CORP0.65%
DOLLARAMA INC0.56%
Only in ITOT — iShares Core S&P Total U.S. Stock Market ETF
StockWeight
NVDA7.02%
MSFT5.94%
AAPL5.83%
AMZN3.29%
META2.46%

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Frequently Asked Questions (FAQs)
What is the portfolio overlap between CSPAX and ITOT?

CSPAX (SMALLCAP World Fund Inc) and ITOT (iShares Core S&P Total U.S. Stock Market ETF) share 3.1% portfolio overlap as of CSPAX's March 31, 2026 filing and ITOT's September 30, 2025 filing, across 306 common stocks. Overlap is the sum of the smaller weight of each shared stock, so it reads as the share of a dollar that lands on the same companies in both funds.

Do CSPAX and ITOT invest in the same stocks?

Mostly not. Only a small portion of their portfolios overlaps — these funds hold largely different stocks and genuinely diversify each other.

What are the top stocks held by both CSPAX and ITOT?

The most prominent shared holdings (by combined weight) are: ALNY, INSM, FITB. See the full common-holdings table on this page for weights in each fund.

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