ETF and Mutual Fund Analysis

Holdings as of May 31, 2026 (FCFMX) and September 30, 2025 (IVV)

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

Home > Compare > FCFMX vs IVV Holdings as of May 31, 2026 (FCFMX) and September 30, 2025 (IVV)

FCFMX vs IVV: Portfolio Overlap

Fidelity Series Total Market Index Fund vs iShares Core S&P 500 ETF

81.4%
Weighted portfolio overlap
Very High Overlap

The two portfolios are structurally near-identical: most of the weight sits in the same stocks, so holding both concentrates rather than spreads capital. The tier describes what the data shows, not what to do about it.

FCFMX
3815 equity holdings
as of May 31, 2026
IVV
503 equity holdings
as of September 30, 2025
496 stocks held in common
Overlap View Venn Diagram
81.4% OVERLAP FCFMX IVV
Overlapping Holdings
10 Top 10 of 496 shared, by overlap contribution
# Stock FCFMX IVV Overlap%
1
NVDA
 7.01% 7.98% 7.01%
2
AAPL
 6.26% 6.62% 6.26%
3
MSFT
 4.57% 6.75% 4.57%
4
AMZN
 3.61% 3.74% 3.61%
5
AVGO
 2.89% 2.72% 2.72%
6
GOOGL
 3.03% 2.48% 2.48%
7
GOOG
 2.40% 1.99% 1.99%
8
META
 1.89% 2.79% 1.89%
9
TSLA
 1.67% 2.19% 1.67%
10
BRK.B
 1.19% 1.62% 1.19%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in FCFMX — Fidelity Series Total Market Index Fund
StockWeight
SNDK0.34%
MRVL0.24%
VRT0.16%
SNOW0.12%
CIEN0.11%
Only in IVV — iShares Core S&P 500 ETF
StockWeight
CCL0.06%
K0.04%
CTRA0.03%
HOLX0.03%
Amcor PLC0.03%

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Frequently Asked Questions (FAQs)
What is the portfolio overlap between FCFMX and IVV?

FCFMX (Fidelity Series Total Market Index Fund) and IVV (iShares Core S&P 500 ETF) share 81.4% portfolio overlap as of FCFMX's May 31, 2026 filing and IVV's September 30, 2025 filing, across 496 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 FCFMX and IVV invest in the same stocks?

Almost entirely. These funds hold nearly identical portfolios and offer little differentiation between them.

What are the top stocks held by both FCFMX and IVV?

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

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