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 VBK
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
81
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 0.748).
- VBK has the lower published fee (0.05% vs 0.15%).
- VBK is cheaper on dividend valuation (131 vs 170, where 100 is each fund's historical median).
- VBK has the stronger regression fit (adjusted R-squared 0.965 vs 0.909).
These are screening signals, not a complete review of portfolio construction, turnover, taxes, or trading quality.
VBK
Vanguard Small-Cap Growth ETF
SMB
Adj. R2
0.965
Rel. Sharpe
0.748
Mkt beta
1.06
AUM
US$21.1B
MER
0.05%
Valuation
131
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 -0.22
HML
diff +0.12
RMW
diff +0.29
CMA
diff +0.07
UMD
diff -0.01
Why This Pair Matches
Exposure level
77
Exposure shape
94
Mkt beta diff
0.04
Rel. Sharpe diff
0.142
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.
Monthly updates
Get the next US ETF leaders update
Get one monthly email when the US leaders table refreshes, plus methodology and comparison-page updates.
Monthly leaders refresh
Download-access updates
Low-volume research notes
One monthly email when the data drop lands. This browser will remember you after signup.