MDYG
State Street SPDR S&P 400 Mid Cap Growth ETF
SMB
Adj. R2
0.909
Rel. Sharpe
0.890
Mkt beta
1.03
AUM
US$2.6B
MER
0.15%
Valuation
170
ETF comparison
Verified factor-similar pair
MDYG vs RFG
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
87
Verified similar
The score combines exposure-level distance, factor-vector shape, market-beta closeness, and a small backtested relative-Sharpe term.
Quick Read
- MDYG has the higher backtested relative Sharpe (0.890 vs 0.812).
- MDYG has the lower published fee (0.15% vs 0.35%).
- MDYG is cheaper on dividend valuation (170 vs 372, where 100 is each fund's historical median).
- MDYG has the stronger regression fit (adjusted R-squared 0.909 vs 0.864).
These are screening signals, not a complete review of portfolio construction, turnover, taxes, or trading quality.
RFG
Invesco S&P Midcap 400 Pure Growth ETF
SMB
Adj. R2
0.864
Rel. Sharpe
0.812
Mkt beta
1.05
AUM
US$310M
MER
0.35%
Valuation
372
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 -0.08
HML
diff -0.01
RMW
diff -0.03
CMA
diff +0.14
UMD
diff -0.04
Why This Pair Matches
Exposure level
84
Exposure shape
98
Mkt beta diff
0.03
Rel. Sharpe diff
0.077
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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