ETF and Mutual Fund Analysis

Holdings as of August 12, 2026 (SPY) and March 31, 2026 (VOO)

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

Home > Compare > SPY vs VOO Holdings as of August 12, 2026 (SPY) and March 31, 2026 (VOO)

SPY vs VOO: Portfolio Overlap

SPDR® S&P 500® ETF Trust vs Vanguard 500 Index Fund

91.3%
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.

SPY
505 equity holdings
as of August 12, 2026
VOO
504 equity holdings
as of March 31, 2026
491 stocks held in common
Overlap View Venn Diagram
91.3% OVERLAP SPY VOO
Overlapping Holdings
10 Top 10 of 491 shared, by overlap contribution
# Stock SPY VOO Overlap%
1
NVDA
 8.14% 7.59% 7.59%
2
AAPL
 6.66% 6.68% 6.66%
3
MSFT
 5.49% 4.93% 4.93%
4
AMZN
 3.92% 3.65% 3.65%
5
GOOGL
 3.02% 3.00% 3.00%
6
AVGO
 2.95% 2.63% 2.63%
7
GOOG
 2.43% 2.40% 2.40%
8
META
 1.91% 2.24% 1.91%
9
BRK.B
 1.40% 1.57% 1.40%
10
TSLA
 1.38% 1.87% 1.38%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in SPY — SPDR® S&P 500® ETF Trust
StockWeight
XOM0.99%
MRVL0.29%
HON0.11%
HONA0.08%
US DOLLAR0.08%
Only in VOO — VANGUARD 500 INDEX FUND
StockWeight
XOM1.27%
HON0.26%
EA0.08%
CTRA0.05%
CCL0.05%

Run the full interactive analysis — compare up to 5 funds at once, see Venn diagrams, heatmaps, and more.

Run Full Analysis →
Frequently Asked Questions (FAQs)
What is the portfolio overlap between SPY and VOO?

SPY (SPDR® S&P 500® ETF Trust) and VOO (Vanguard 500 Index Fund) share 91.3% portfolio overlap as of SPY's August 12, 2026 filing and VOO's March 31, 2026 filing, across 491 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 SPY and VOO 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 SPY and VOO?

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.

Related Comparisons
VOO — VANGUARD 500 INDEX FUND vs VTV — VANGUARD VALUE INDEX FUNDIEFA — iShares Core MSCI EAFE ETF vs SPY — SPDR® S&P 500® ETF TrustSPY — SPDR® S&P 500® ETF Trust vs VUG — VANGUARD GROWTH INDEX FUNDIEFA — iShares Core MSCI EAFE ETF vs VOO — VANGUARD 500 INDEX FUNDSPY — SPDR® S&P 500® ETF Trust vs VEA — VANGUARD DEVELOPED MARKETS INDEX FUNDABALX — American Balanced Fund vs VOO — VANGUARD 500 INDEX FUND