SPMD
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SMB
Adj. R2
0.941
Rel. Sharpe
0.952
Mkt beta
1.00
AUM
US$16.6B
MER
0.03%
Valuation
137
ETF comparison
Verified factor-similar pair
SPMD vs VIOO
These two ETFs meet the same FF6 US comparison criteria: US-listed equity ETFs, the same USD model basis, at least one material non-market factor, and 100% overlap in statistically significant material factor exposure.
SMB
Similarity score
84
Verified similar
The score combines exposure-level distance, factor-vector shape, market-beta closeness, and a small backtested relative-Sharpe term.
Quick Read
- VIOO has the higher backtested relative Sharpe (1.191 vs 0.952).
- SPMD has the lower published fee (0.03% vs 0.07%).
- VIOO is cheaper on dividend valuation (100 vs 137, where 100 is each fund's historical median).
- VIOO has the stronger regression fit (adjusted R-squared 0.979 vs 0.941).
These are screening signals, not a complete review of portfolio construction, turnover, taxes, or trading quality.
VIOO
Vanguard S&P Small-Cap 600 ETF
SMB
Adj. R2
0.979
Rel. Sharpe
1.191
Mkt beta
0.98
AUM
US$3.6B
MER
0.07%
Valuation
100
Factor Exposure Match
Blue bars compare raw factor beta magnitude. Green bars compare absolute t-stat strength. Dim bars indicate the t-stat is below 1.96.
SMB
diff -0.39
HML
diff -0.13
RMW
diff -0.00
CMA
diff -0.00
UMD
diff -0.08
Why This Pair Matches
Exposure level
80
Exposure shape
99
Mkt beta diff
0.02
Rel. Sharpe diff
0.239
This comparison focuses on measured factor exposure. It does not compare holdings methodology, turnover, tax handling, or issuer process. Backtested relative Sharpe is a secondary signal rather than a stand-alone forecast. See methodology.
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