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IWV vs SEIM: Differences, Returns & Fees

IWV and SEIM hold 27% of their weight in the same names, and SEIM returned +22.3% over the year. Net assets: $20.6bn on Oct 9, 2026 for iShares Russell 3000 ETF, and $1.5bn on Jun 30, 2026 for SEI Enhanced U.S. Large Cap Momentum Factor ETF.

SEIM costs 0.05 points a year less; their one-year returns differ by 5.6 points; IWV is 13.0 times larger.

IWVSEIM
Expense ratio0.20%0.15%
Net assets, as of Jun 30, 2026$19.5bn$1.5bn
Total return, 1 year+16.7%+22.3%
What it tracksRussell 3000 IndexNo index, actively managed
Holdings in common27%
Top ten holdings, share of the fund34.8%37.6%

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

+16.7%
IWV total return, 1 year
+22.3%
SEIM total return, 1 year
0.20%
IWV expense ratio
0.15%
SEIM expense ratio

What they hold in common

By the books each fund has filed, IWV 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.

half

27% in common

Positions both hold, largest shared weight first
Holding IWV SEIM
NVIDIA 7.24% 6.24%
APPLE 6.62% 2.90%
ALPHABET CLASS A 2.73% 7.00%
MICROSOFT 5.22% 2.66%
MICRON TECHNOLOGY 1.57% 2.98%
AMAZON.COM INC 3.32% 1.05%
VISA CLASS A 0.86% 2.84%
JOHNSON & JOHNSON 0.83% 2.48%
WALMART 0.65% 0.69%
CISCO SYSTEMS INC 0.61% 1.81%
PALANTIR TECHNOLOGIES CLASS A 0.59% 0.72%
BROADCOM INC 2.25% 0.55%
Only in IWV
META PLATFORMS CLASS A 2.13%
TESLA INC 1.47%
ADVANCED MICRO DEVICES 1.36%
BERKSHIRE HATHAWAY INC CLASS B 1.28%
ELI LILLY 1.26%
JPMORGAN CHASE & CO 1.19%
EXXONMOBIL HOLDINGS CORP 0.93%
INTEL CORPORATION 0.66%
Only in SEIM
APPLIED MATERIALS, INC. 3.37%
NVENT ELECTRIC PUBLIC LIMITED COMPANY 1.77%
THE HERSHEY COMPANY 1.61%
INTERACTIVE BROKERS GROUP, INC. 0.56%
Samsara Inc (Pre-Reincorporation) 0.33%

Check overlap with more funds →

On the same fields

IWV
iShares Russell 3000 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 an index Actively managed
Total return, 1 year +16.7% +22.3%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 −0.6 pts +5.0 pts
Expense ratio 0.20% 0.15%
Already in the S&P 500 87.8% 89.4%
Holdings 2600 71
Net assets, IWV as of Oct 9, 2026 and SEIM as of Jun 30, 2026 $20.6bn $1.5bn

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

IWV in plain words

IWV tracks an index. Over the year to Oct 9, 2026 it returned +16.7% with distributions reinvested, against +17.3% for the S&P 500. The prospectus expense ratio is 0.20% a year. By its holdings published by its issuer for Oct 8, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 2,600 positions, with the top ten at 34.8%.

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. The prospectus expense ratio is 0.15% a year. 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, IWV or SEIM?
In the year to Oct 9, 2026, with distributions reinvested, IWV returned +16.7% and SEIM +22.3%.
Which is cheaper, IWV or SEIM?
SEIM is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IWV and SEIM overlap with the S&P 500?
By their latest filed holdings, 88% of IWV and 89% of SEIM by weight is stocks the S&P 500 already holds.
Other comparisons
IWV vs PDPIWV vs USXFDFAL vs IWVIWV vs QQQEOEF vs SEIMSEIM vs SPMOMTUM vs SEIMSEIM vs SPHQ
IWV on its own →SEIM on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IWV filings on SEC EDGAR ↗IWV prospectus with the expense ratio (SEC) ↗iShares page for IWV ↗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, IWV against SEIM, data as of Oct 9, 2026. https://etfiq.com/compare/any/iwv-vs-seim

Open data

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