IWR vs TMSL: Differences, Returns & Fees

IWR and TMSL hold 15% of their weight in the same names, and TMSL returned +16.9% over the year. Net assets on Oct 20, 2026: $57.0bn for iShares Russell Mid-Cap ETF and $3.1bn for T. Rowe Price Small-Mid Cap ETF.

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Answers cite the figures on this page.

IWR costs 0.37 points a year less; their one-year returns differ by 1.8 points; IWR is 18.2 times larger.

IWR vs TMSL: Differences, Returns & Fees
IWRTMSL
Expense ratio0.18%0.55%
Net assets$57.0bn$3.1bn
Total return, 1 year+15.1%+16.9%
What it tracksRussell Midcap IndexNo index, actively managed
Holdings in common15%
Top ten holdings, share of the fund6.8%9.8%
Below its high4.3%, high on Aug 14, 20268.3%, high on Aug 14, 2026

Holdings in common uses holdings dated Jun 30, 2026 and Oct 19, 2026.

+15.1%
IWR total return, 1 year
+16.9%
TMSL total return, 1 year
0.18%
IWR expense ratio
0.55%
TMSL expense ratio

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What they hold in common

By the books each fund has filed, IWR and TMSL hold 15% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Oct 19, 2026.

half

15% in common

Positions both hold, largest shared weight first
Holding IWR TMSL
NATERA 0.41% 0.58%
ASTERA LABS 0.33% 0.35%
REVOLUTION MEDICINES 0.26% 0.52%
FLEX LTD 0.24% 0.31%
HUNTINGTON BANCSHARES INC 0.23% 0.35%
AMEREN 0.21% 0.44%
TELEDYNE TECHNOLOGIES 0.21% 0.98%
FIFTH THIRD BANCORP 0.34% 0.20%
TECHNIPFMC PLC 0.20% 0.80%
CORPAY 0.19% 0.72%
QUEST DIAGNOSTICS INC 0.19% 0.44%
ULTA BEAUTY INC 0.19% 0.36%
Only in IWR
MARATHON PETROLEUM 1.04%
PHILLIPS 66 0.87%
SNOWFLAKE 0.79%
CLOUDFLARE CLASS A 0.71%
DATADOG INC CLASS A 0.64%
MODERNA 0.61%
HEWLETT PACKARD ENTERPRISE 0.55%
ROBINHOOD MARKETS CLASS A 0.55%
Only in TMSL
STONEX GROUP INC 0.80%
BRIGHTSPRING HEALTH SERVICES 0.80%
RELIANCE INC 0.78%
WESTERN ALLIANCE BANCORP 0.73%
BEL FUSE INC-CL B 0.72%
MAREX GROUP PLC 0.72%
JBT MAREL CORP 0.65%
BELDEN INC 0.64%

Check overlap with more funds →

On the same fields

IWR
iShares Russell Mid-Cap ETF
TMSL
T. Rowe Price Small-Mid Cap ETF
Where it sits Stock ETF Stock ETF
What it is Tracks an index Actively managed
Total return, 1 year +15.1% +16.9%
Its benchmark over the same days +15.0% (IWV) +15.0% (IWV)
Gap to its benchmark +0.1 pts vs IWV +1.9 pts vs IWV
Expense ratio 0.18% 0.55%
Already in the S&P 500 61.6% 14.9%
Holdings 825 297
Net assets $57.0bn $3.1bn

IWR and TMSL on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.

About IWR

IWR tracks an index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 19, 2026, 62% of the fund by weight is stocks the S&P 500 also holds, across 825 positions, with the top ten at 6.8%. It sat 4.3% below its high of Aug 14, 2026 on Oct 20, 2026.

Over the year to Oct 20, 2026 it returned +15.1% with distributions reinvested, against +15.0% for its benchmark, the Russell 3000 Index.

About TMSL

TMSL is actively managed and tracks no index. The prospectus expense ratio is 0.55% a year. By its holdings filed for Jun 30, 2026, 15% of the fund by weight is stocks the S&P 500 also holds, across 297 positions, with the top ten at 9.8%. It sat 8.3% below its high of Aug 14, 2026 on Oct 20, 2026.

Over the year to Oct 20, 2026 it returned +16.9% with distributions reinvested, against +15.0% for its benchmark, the Russell 3000 Index.

Questions people ask

Which returned more over the last year, IWR or TMSL?
In the year to Oct 20, 2026, with distributions reinvested, IWR returned +15.1% and TMSL +16.9%.
Which is cheaper, IWR or TMSL?
IWR is cheaper, by 0.37 percentage points a year. That is about $37 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IWR and TMSL overlap with the S&P 500?
By their latest filed holdings, 62% of IWR and 15% of TMSL by weight is stocks the S&P 500 already holds.
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ETFIQ, IWR against TMSL, data as of Oct 20, 2026. https://etfiq.com/compare/any/iwr-vs-tmsl

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Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.