ETF and Mutual Fund Analysis

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

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

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

SPY vs VTSAX: Portfolio Overlap

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

84.4%
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.

SPY
505 equity holdings
as of August 12, 2026
VTSAX
3506 equity holdings
as of March 31, 2026
495 stocks held in common
Overlap View Venn Diagram
84.4% OVERLAP SPY VTSAX
Overlapping Holdings
10 Top 10 of 495 shared, by overlap contribution
# Stock SPY VTSAX Overlap%
1
NVDA
 8.14% 6.44% 6.44%
2
AAPL
 6.66% 5.96% 5.96%
3
MSFT
 5.49% 4.40% 4.40%
4
AMZN
 3.92% 3.22% 3.22%
5
GOOGL
 3.02% 2.68% 2.68%
6
AVGO
 2.95% 2.35% 2.35%
7
GOOG
 2.43% 2.12% 2.12%
8
META
 1.91% 2.00% 1.91%
9
TSLA
 1.38% 1.67% 1.38%
10
BRK.B
 1.40% 1.37% 1.37%
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%
HON0.11%
NXPI0.09%
US DOLLAR0.08%
HONA0.08%
Only in VTSAX — VANGUARD TOTAL STOCK MARKET INDEX FUND
StockWeight
XOM1.13%
HON0.23%
NET0.10%
LNG0.09%
EA0.08%

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Frequently Asked Questions (FAQs)
What is the portfolio overlap between SPY and VTSAX?

SPY (SPDR® S&P 500® ETF Trust) and VTSAX (Vanguard Total Stock Market Index Fund) share 84.4% portfolio overlap as of SPY's August 12, 2026 filing and VTSAX's March 31, 2026 filing, across 495 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 VTSAX 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 VTSAX?

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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