Which returned more over the last year, MTUM or SEIM?

In the year to Oct 9, 2026, with distributions reinvested, MTUM returned +25.8% and SEIM +22.3%.

Which is cheaper, MTUM or SEIM?

Neither: MTUM and SEIM both charge 0.15% a year. Fees come from each fund's prospectus.

How much do MTUM and SEIM overlap with the S&P 500?

By their latest filed holdings, 93% of MTUM and 89% of SEIM by weight is stocks the S&P 500 already holds.

Compare their flows Ask IQ about these two funds

MTUM vs SEIM: Differences, Returns & Fees

MTUM and SEIM hold 27% of their weight in the same names, and MTUM returned +25.8% over the year. Net assets: $20.3bn on Oct 9, 2026 for iShares MSCI USA Momentum Factor ETF, and $1.5bn on Jun 30, 2026 for SEI Enhanced U.S. Large Cap Momentum Factor ETF.

Both cost 0.15% a year; their one-year returns differ by 3.5 points; MTUM is 19.4 times larger.

Points (pts) are percentage points.

	MTUM	SEIM
Expense ratio	0.15%	0.15%
Net assets, as of Jun 30, 2026	$29.0bn	$1.5bn
Total return, 1 year	+25.8%	+22.3%
What it tracks	MSCI USA Momentum SR Variant Index	No index, actively managed
Holdings in common	27%
Top ten holdings, share of the fund	36.3%	37.6%
Below its high	7.1%, high on Jun 22, 2026

Holdings in common uses holdings dated Jun 30, 2026 and Oct 8, 2026.

+25.8%

MTUM total return, 1 year

+22.3%

SEIM total return, 1 year

0.15%

MTUM expense ratio

0.15%

SEIM expense ratio

What they hold in common

By the books each fund has filed, MTUM and SEIM hold 27% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Oct 8, 2026.

50%

half

27% in common

Positions both hold, largest shared weight first

Holding MTUM SEIM

MICRON TECHNOLOGY 5.26% 2.98%

SANDISK 2.81% 3.13%

ALPHABET CLASS A 2.69% 7.00%

JOHNSON & JOHNSON 3.10% 2.48%

LAM RESEARCH 2.37% 3.86%

DELL TECHNOLOGIES INC CLASS C 2.04% 2.28%

CATERPILLAR INC 2.02% 2.31%

CISCO SYSTEMS INC 3.54% 1.81%

WESTERN DIGITAL CORP 1.60% 0.75%

CORNING 0.69% 0.79%

BANK OF NEW YORK MELLON CORP 0.67% 2.47%

GOLDMAN SACHS GROUP 0.91% 0.62%

Only in MTUM

ADVANCED MICRO DEVICES 6.33%

INTEL CORPORATION 4.22%

APPLIED MATERIAL INC 3.07%

PALO ALTO NETWORKS 2.70%

EXXONMOBIL HOLDINGS CORP 2.61%

SEAGATE TECHNOLOGY HOLDINGS PLC 2.02%

UNITEDHEALTH GROUP 1.89%

COCA-COLA 1.80%

Only in SEIM

NVIDIA CORPORATION 6.24%

APPLIED MATERIALS, INC. 3.37%

APPLE INC. 2.90%

VISA INC. 2.84%

MICROSOFT CORPORATION 2.66%

CARDINAL HEALTH, INC. 1.99%

PARKER-HANNIFIN CORPORATION 1.93%

NVENT ELECTRIC PUBLIC LIMITED COMPANY 1.77%

Check overlap with more funds →

On the same fields

MTUM

iShares MSCI USA Momentum Factor ETF

SEIM

SEI Enhanced U.S. Large Cap Momentum Factor ETF

Where it sits Stock ETF Stock ETF

Issuer iShares SEI

What it is Tracks the MSCI USA Momentum Factor Actively managed

Total return, 1 year +25.8% +22.3%

S&P 500 over the same days +17.3% +17.3%

Gap to the S&P 500 +8.6 pts +5.0 pts

Expense ratio 0.15% 0.15%

Already in the S&P 500 93.2% 89.4%

Holdings 126 71

Net assets, MTUM as of Oct 9, 2026 and SEIM as of Jun 30, 2026 $20.3bn $1.5bn

MTUM and SEIM on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

MTUM in plain words

MTUM tracks the MSCI USA Momentum Factor. Over the year to Oct 9, 2026 it returned +25.8% with distributions reinvested, against +17.3% for the S&P 500. The prospectus expense ratio is 0.15% a year. By its holdings published by its issuer for Oct 8, 2026, 93% of the fund by weight is stocks the S&P 500 also holds, across 126 positions, with the top ten at 36.3%. It sat 7.1% below its high of Jun 22, 2026 on Oct 9, 2026.

SEIM in plain words

SEIM is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned +22.3% with distributions reinvested, against +17.3% for the S&P 500. By its holdings filed for Jun 30, 2026, 89% of the fund by weight is stocks the S&P 500 also holds, across 71 positions, with the top ten at 37.6%.

Questions people ask

Which returned more over the last year, MTUM or SEIM?: In the year to Oct 9, 2026, with distributions reinvested, MTUM returned +25.8% and SEIM +22.3%.
Which is cheaper, MTUM or SEIM?: Neither: MTUM and SEIM both charge 0.15% a year. Fees come from each fund's prospectus.
How much do MTUM and SEIM overlap with the S&P 500?: By their latest filed holdings, 93% of MTUM and 89% of SEIM by weight is stocks the S&P 500 already holds.

Other comparisons

MTUM vs USXF MTUM vs QQQE FQAL vs MTUM CATH vs MTUM OEF vs SEIM DFUS vs SEIM SEIM vs SPHQ SEIM vs SPMO

MTUM on its own →SEIM on its own →Hold both: look the portfolio through →Rankings →Standards and sources →

Where these figures came from

MTUM filings on SEC EDGAR ↗MTUM prospectus with the expense ratio (SEC) ↗iShares page for MTUM ↗SEIM filings on SEC EDGAR ↗SEIM prospectus with the expense ratio (SEC) ↗SEI website ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, MTUM against SEIM, data as of Oct 9, 2026. https://etfiq.com/compare/any/mtum-vs-seim

Open data

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