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IVV vs SEIM: Differences, Returns & Fees

IVV and SEIM hold 28% of their weight in the same names, and SEIM returned +22.3% over the year. Net assets: $896.4bn on Oct 9, 2026 for iShares Core S&P 500 ETF, and $1.5bn on Jun 30, 2026 for SEI Enhanced U.S. Large Cap Momentum Factor ETF.

IVV costs 0.12 points a year less; their one-year returns differ by 5.0 points; IVV is far larger, $888.1bn against $1.5bn.

IVVSEIM
Expense ratio0.03%0.15%
Net assets, as of Jun 30, 2026$888.1bn$1.5bn
Total return, 1 year+17.3%+22.3%
What it tracksS&P 500No index, actively managed
Holdings in common28%
Top ten holdings, share of the fund39.0%37.6%

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

+17.3%
IVV total return, 1 year
+22.3%
SEIM total return, 1 year
0.03%
IVV expense ratio
0.15%
SEIM expense ratio

What they hold in common

By the books each fund has filed, IVV and SEIM hold 28% 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

28% in common

Positions both hold, largest shared weight first
Holding IVV SEIM
NVIDIA 8.32% 6.24%
ALPHABET CLASS A 3.05% 7.00%
APPLE 7.41% 2.90%
MICROSOFT 5.79% 2.66%
MICRON TECHNOLOGY 1.75% 2.98%
AMAZON.COM INC 3.72% 1.05%
VISA CLASS A 0.95% 2.84%
JOHNSON & JOHNSON 0.92% 2.48%
WALMART 0.74% 0.69%
CISCO SYSTEMS INC 0.68% 1.81%
PALANTIR TECHNOLOGIES CLASS A 0.68% 0.72%
LAM RESEARCH 0.60% 3.86%
Only in IVV
META PLATFORMS CLASS A 2.37%
TESLA INC 1.58%
ADVANCED MICRO DEVICES 1.51%
BERKSHIRE HATHAWAY INC CLASS B 1.42%
ELI LILLY 1.40%
JPMORGAN CHASE & CO 1.31%
EXXONMOBIL HOLDINGS CORP 1.03%
INTEL CORPORATION 0.79%
Only in SEIM
APPLIED MATERIALS, INC. 3.37%
NVENT ELECTRIC PUBLIC LIMITED COMPANY 1.77%
WOODWARD, INC. 1.70%
THE HERSHEY COMPANY 1.61%
TD SYNNEX CORPORATION 1.40%
ITT INC. 1.18%
CURTISS-WRIGHT CORPORATION 0.94%
MASTEC, INC. 0.73%

Check overlap with more funds →

On the same fields

IVV
iShares Core S&P 500 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 S&P 500 Actively managed
Total return, 1 year +17.3% +22.3%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 +0.1 pts +5.0 pts
Expense ratio 0.03% 0.15%
Already in the S&P 500 99.8% 89.4%
Holdings 505 71
Net assets, IVV as of Oct 9, 2026 and SEIM as of Jun 30, 2026 $896.4bn $1.5bn

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

IVV in plain words

IVV tracks the S&P 500. Over the year to Oct 9, 2026 it returned +17.3% with distributions reinvested, against +17.3% for the S&P 500. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 8, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 39.0%.

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, IVV or SEIM?
In the year to Oct 9, 2026, with distributions reinvested, IVV returned +17.3% and SEIM +22.3%.
Which is cheaper, IVV or SEIM?
IVV is cheaper, by 0.12 percentage points a year. That is about $12 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IVV and SEIM overlap with the S&P 500?
By their latest filed holdings, 100% of IVV and 89% of SEIM by weight is stocks the S&P 500 already holds.
Other comparisons
IVV vs STXFIVV vs QLCIVV vs KLMNIVV vs SPUSSEIM vs SPYSEIM vs VOOSEIM vs VTIIWB vs SEIM
IVV on its own →SEIM on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IVV filings on SEC EDGAR ↗IVV prospectus with the expense ratio (SEC) ↗iShares page for IVV ↗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, IVV against SEIM, data as of Oct 9, 2026. https://etfiq.com/compare/any/ivv-vs-seim

Open data

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