IWM vs VOO Overlap Analysis

Comparing iShares Russell 2000 ETF and Vanguard S&P 500 ETF

Holdings Overlap
0.00%
Very Low Overlap
Shared Holdings
0 of 507
Complete portfolio analysis
Calculation Method
Min Weight
Weighted intersection

Visual Overlap

IWM
VOO
0.0%
IWM Only
Overlap
VOO Only

⚔️Head-to-Head Comparison

8 - 10

🏆 VOO wins this comparison

Key Factors

💰 Expense Ratio
IWM:0.19%
vs
VOO:0.03%
🎯 Number of Holdings
IWM:1,983 holdings
vs
VOO:503 holdings
📈 5-Year Return
IWM:+10.5%
vs
VOO:+15.8%
Additional Metrics (5)
⚖️ Concentration Risk
IWM: 5.3% in top 10
VOO: 40.2% in top 10
📊 Assets Under Management
IWM: $60B ✓
VOO: $380B ✓
Sharpe Ratio
IWM: 0.38
VOO: 0.82
📉 Volatility
IWM: 24.8%
VOO: 18.2%
🔍 Uniqueness vs SPY
IWM: 100.0% unique
VOO: 4.0% unique

Bottom line: VOO wins with better expense ratio and 5-year return. Consider VOO for your portfolio, but IWM is still a solid choice if you prefer its specific advantages.

Shared Holdings (0 of 507 analyzed)

IWM & VOO Intersection

SymbolNameIWMVOOMin

Min Weight: The minimum weight between the two ETFs for each shared holding. This represents the true overlap contribution.

Data sourced from official fund providers. Showing top holdings for educational analysis.

Top Holdings Only in IWM

Unique to IWM

SymbolNameWeight
CRDOCREDO TECHNOLOGY GROUP HOLDING LTD0.86%
BEBLOOM ENERGY CLASS A CORP0.80%
FNFABRINET0.62%
IONQIONQ INC0.51%
NXTNEXTPOWER INC CLASS A0.44%

Top Holdings Only in VOO

Unique to VOO

SymbolNameWeight
NVDANVDA8.47%
AAPLAAPL6.88%
MSFTMSFT6.60%
AMZNAMZN4.06%
AVGOAVGO2.98%

Price Correlation

How We Calculate Overlap

We use the minimum weight method with normalization to calculate portfolio overlap:

Overlap = Σ min(weightA, weightB) for each shared holding

Normalization: Holdings weights are normalized to sum to 100% before comparison. This ensures accurate overlap calculations even when analyzing partial holdings data (e.g., top 50 positions).

Conservative approach: We consider only the smaller allocation for each shared position, giving you a realistic view of true portfolio overlap.

📊 This analysis is based on publicly available holdings data. For the most current and complete holdings information, please visit the official ETF provider websites.

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