ETF and Mutual Fund Analysis

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

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

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

IWF vs SPY: Portfolio Overlap

iShares Russell 1000 Growth ETF vs SPDR® S&P 500® ETF Trust

58.4%
Weighted portfolio overlap
High Overlap

The two funds are running highly redundant strategies — the same market exposure is paid for through two expense ratios.

IWF
387 equity holdings
as of March 31, 2026
SPY
505 equity holdings
as of August 12, 2026
191 stocks held in common
Overlap View Venn Diagram
58.4% OVERLAP IWF SPY
Overlapping Holdings
10 Top 10 of 191 shared, by overlap contribution
# Stock IWF SPY Overlap%
1
NVDA
 12.95% 8.14% 8.14%
2
AAPL
 11.66% 6.66% 6.66%
3
MSFT
 8.84% 5.49% 5.49%
4
AMZN
 4.67% 3.92% 3.92%
5
GOOGL
 3.54% 3.02% 3.02%
6
AVGO
 4.80% 2.95% 2.95%
7
GOOG
 2.88% 2.43% 2.43%
8
META
 3.46% 1.91% 1.91%
9
LLY
 2.66% 1.45% 1.45%
10
TSLA
 3.55% 1.38% 1.38%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in IWF — iShares Russell 1000 Growth ETF
StockWeight
SPOT0.27%
NET0.23%
SNOW0.18%
NU0.17%
ALNY0.15%
Only in SPY — SPDR® S&P 500® ETF Trust
StockWeight
MU1.54%
JPM1.47%
BRK.B1.40%
XOM0.99%
JNJ0.94%

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

IWF (iShares Russell 1000 Growth ETF) and SPY (SPDR® S&P 500® ETF Trust) share 58.4% portfolio overlap as of IWF's March 31, 2026 filing and SPY's August 12, 2026 filing, across 191 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 IWF and SPY invest in the same stocks?

Largely yes. A substantial portion of both portfolios consists of the same stocks, leaving limited room for differentiation.

What are the top stocks held by both IWF and SPY?

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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