ETF and Mutual Fund Analysis

Holdings as of March 31, 2026

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

Home > Compare > IWF vs VB Holdings as of March 31, 2026

IWF vs VB: Portfolio Overlap

iShares Russell 1000 Growth ETF vs Vanguard Small-Cap Index Fund

3.7%
Weighted portfolio overlap
Low Overlap

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

IWF
387 equity holdings
as of March 31, 2026
VB
1312 equity holdings
as of March 31, 2026
192 stocks held in common
Overlap View Venn Diagram
3.7% OVERLAP IWF VB
Overlapping Holdings
10 Top 10 of 192 shared, by overlap contribution
# Stock IWF VB Overlap%
1
FIX
 0.17% 0.34% 0.17%
2
INSM
 0.12% 0.25% 0.12%
3
RKLB
 0.11% 0.26% 0.11%
4
NRG
 0.11% 0.44% 0.11%
5
TPL
 0.10% 0.20% 0.10%
6
TPR
 0.10% 0.40% 0.10%
7
NTRA
 0.10% 0.37% 0.10%
8
FTAI
 0.09% 0.35% 0.09%
9
BURL
 0.07% 0.14% 0.07%
10
JBL
 0.06% 0.37% 0.06%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in IWF — iShares Russell 1000 Growth ETF
StockWeight
NVDA12.95%
AAPL11.66%
MSFT8.84%
AVGO4.80%
AMZN4.67%
Only in VB — VANGUARD SMALL-CAP INDEX FUND
StockWeight
ATO0.43%
FTI0.39%
CIEN0.39%
EXE0.37%
UTHR0.37%

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

IWF (iShares Russell 1000 Growth ETF) and VB (Vanguard Small-Cap Index Fund) share 3.7% portfolio overlap as of their March 31, 2026 filings, across 192 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 VB 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 IWF and VB?

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

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