Verified factor-similar pair

BBMC vs IWM

These two ETFs pass the same FF6 US similarity lane: US-listed equity ETFs, same USD model basis, at least one material non-market factor, and 100% overlap in statistically significant material factor exposure.

SMB

Similarity score

Near substitute

Score blends exposure-level distance, factor-vector shape, market-beta closeness, and a small backtested relative-Sharpe term.

BBMC

JPMorgan BetaBuilders U.S. Mid Cap Equity ETF

SMB

Adj. R2

0.943

Rel. Sharpe

0.674

Mkt beta

1.02

AUM

US$2.0B

MER

0.07%

Valuation

113

IWM

iShares Russell 2000 ETF

SMB

Adj. R2

0.986

Rel. Sharpe

0.785

Mkt beta

1.02

AUM

US$73.2B

MER

0.19%

Valuation

136

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

BBMC

+0.54

|t|

+8.3

IWM

+0.82

|t|

+50.5

diff -0.28

HML

BBMC

+0.11

|t|

+1.8

IWM

+0.10

|t|

+6.2

diff +0.01

RMW

BBMC

-0.01

|t|

-0.1

IWM

-0.07

|t|

-4.0

diff +0.07

CMA

BBMC

-0.03

|t|

-0.4

IWM

-0.00

|t|

-0.1

diff -0.03

UMD

BBMC

+0.03

|t|

+0.6

IWM

+0.04

|t|

+3.9

diff -0.01

Why This Pair Matches

Exposure level

Exposure shape

100

Mkt beta diff

0.01

Rel. Sharpe diff

0.112

This comparison focuses on measured factor exposure, not a qualitative review of each fund's portfolio-construction process. Backtested relative Sharpe is included as a secondary signal, while we continue refining a comparison metric that separates factor payoff from alpha. See methodology.

BBMC fund page IWM fund page US ETF Leaders US Universe

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