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
ETF comparison
Verified factor-similar pair
RFG 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
- RFG has the higher backtested relative Sharpe (0.812 vs 0.748).
- VBK has the lower published fee (0.05% vs 0.35%).
- VBK is cheaper on dividend valuation (131 vs 372, where 100 is each fund's historical median).
- VBK has the stronger regression fit (adjusted R-squared 0.965 vs 0.864).
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 -0.15
HML
diff +0.13
RMW
diff +0.32
CMA
diff -0.06
UMD
diff +0.03
Why This Pair Matches
Exposure level
77
Exposure shape
93
Mkt beta diff
0.01
Rel. Sharpe diff
0.065
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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