IWM vs SPY

Compare what the funds own and how their adjusted prices behaved. Every result below identifies the observed period and the amount of holdings data represented.

Reported overlap
0.0%
Very Low Overlap · high confidence
IWM holdings coverage
99.8%
1760 reported positions · 2026-08-26
SPY holdings coverage
99.9%
502 reported positions · Not supplied

Reported exposure intersection

IWM
SPY
0.0%
IWM Only
Overlap
SPY Only

Price Performance

Historical price comparison over 3M

IWM Return
+6.93%
SPY Return
+8.55%
Winner
SPY
+1.62%
Max Drawdown
IWM: -4.8%
SPY: -4.5%
IWM Volatility (annualized)17.24%
SPY Volatility (annualized)12.58%

Latest adjusted-close observations: IWM 2026-08-31 · SPY 2026-08-31.

Comparison

Metric
IWM
SPY
1 Year Return
+26.3%
+20.2%
3 Year Return
+17.3%
+20.9%
5 Year Return
+6.7%
+12.7%
Volatility
23.04%
17.98%
Calculated from available adjusted-close observations. Missing periods are shown as N/A. Past performance does not guarantee future results.

⚠️Risk Metrics

Metric
IWM
SPY
Volatility
23.04%
17.98%
Sharpe Ratio
0.28
0.62
Sortino Ratio
0.27
0.59
Max Drawdown
-41.13%
-33.72%
Beta
1.11
1.00

Interpretation:

  • Lower volatility = smoother ride
  • Higher Sharpe/Sortino = better risk-adjusted returns
  • Smaller max drawdown = less worst-case pain
  • Beta > 1 = more volatile than S&P 500

Risk metrics use the available common observations, a 4% annual risk-free assumption and SPY as the beta benchmark.

Shared reported holdings

0 positions account for a known minimum overlap of 0.0%.

Top Shared Holdings

#StockIWM WeightSPY WeightOverlap
0
Shared Stocks
0.0%
Total Overlap
0
Sectors Represented

Largest positions reported only in IWM

Scroll horizontally to see all data
SymbolNameWeight
MOGAMOOG INC CLASS A0.35%
UMBFUMB FINANCIAL CORP0.34%
CYTKCYTOKINETICS0.33%
EATBRINKER INTERNATIONAL INC0.33%
GKOSGLAUKOS0.33%

Largest positions reported only in SPY

Scroll horizontally to see all data
SymbolNameWeight
NVDANVDA7.90%
AAPLAAPL6.79%
MSFTMSFT5.64%
AMZNAMZN4.08%
GOOGLGOOGL3.14%

Price Correlation

What this report can and cannot establish

Known overlap: for each shared security, we add the smaller reported fund weight. Reported weights remain in their original scale.

Possible overlap: the upper bound adds only the smaller unreported portion. It is uncertainty, not an estimate that the missing positions actually match.

Prices: returns and risk use adjusted-close observations, so distributions and splits are reflected when supplied by the market-data source.

No recommendation: EigenDex does not assign a winner. Costs, tax treatment, liquidity and mandate should be verified with each issuer before acting.

Related research notes