FFSM
Fidelity Fundamental Small-Mid Cap ETF
SMB
Adj. R2
0.916
Rel. Sharpe
1.190
Mkt beta
1.05
AUM
US$1.2B
MER
0.43%
Valuation
133
ETF comparison
Verified factor-similar pair
FFSM vs IWM
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
83
Verified similar
The score combines exposure-level distance, factor-vector shape, market-beta closeness, and a small backtested relative-Sharpe term.
Quick Read
- FFSM has the higher backtested relative Sharpe (1.190 vs 0.798).
- IWM has the lower published fee (0.19% vs 0.43%).
- FFSM is cheaper on dividend valuation (133 vs 142, where 100 is each fund's historical median).
- IWM has the stronger regression fit (adjusted R-squared 0.986 vs 0.916).
These are screening signals, not a complete review of portfolio construction, turnover, taxes, or trading quality.
IWM
iShares Russell 2000 ETF
SMB
Adj. R2
0.986
Rel. Sharpe
0.798
Mkt beta
1.02
AUM
US$73.2B
MER
0.19%
Valuation
142
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 -0.17
HML
diff +0.10
RMW
diff +0.20
CMA
diff +0.02
UMD
diff +0.06
Why This Pair Matches
Exposure level
81
Exposure shape
97
Mkt beta diff
0.04
Rel. Sharpe diff
0.392
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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