IJK vs IVOO: Differences, Returns & Fees

IJK and IVOO hold 64% of their weight in the same names, and IJK returned +14.9% over the year. Net assets: $10.5bn on Oct 20, 2026 for iShares S&P Mid-Cap 400 Growth ETF, and $3.7bn on Sep 30, 2026 for Vanguard S&P Mid-Cap 400 ETF.

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Answers cite the figures on this page.

IVOO costs 0.09 points a year less; their one-year returns differ by 1.3 points; IJK is 2.8 times larger.

IJK vs IVOO: Differences, Returns & Fees
IJKIVOO
Expense ratio0.16%0.07%
Net assets, as of Sep 30, 2026$10.3bn$3.7bn
Total return, 1 year+14.9%+13.6%
What it tracksS&P MidCap 400 Growth IndexS&P MidCap 400 Index
Holdings in common64%
Top ten holdings, share of the fund13.5%7.8%
Below its high8.1%, high on Aug 17, 20266.7%, high on Aug 14, 2026

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

+14.9%
IJK total return, 1 year
+13.6%
IVOO total return, 1 year
0.16%
IJK expense ratio
0.07%
IVOO expense ratio

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Client brief · page 1 of 2Report BR-CD8F5151A6

IJK and IVOO are built for the same job. How do they differ in cost, holdings and results?

  1. What each follows. IJK follows S&P MidCap 400 Growth Index and IVOO follows S&P MidCap 400 Index.
  2. Holdings in common (similar). 64% of the weight is in the same securities (holdings dated Oct 19, 2026 and Sep 30, 2026).
  3. One-year total return (similar). Over 1 year to Oct 20, 2026 IJK returned +14.9% and IVOO +13.6% with distributions reinvested, a gap of 1.3 points.

Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.

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What they hold in common

By the books each fund has filed, IJK and IVOO hold 64% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 19, 2026.

half

64% in common

Positions both hold, largest shared weight first
Holding IJK IVOO
OKTA CLASS A 1.83% 1.02%
TECHNIPFMC PLC 1.59% 0.78%
NVENT ELECTRIC PLC 1.33% 0.76%
ATI 1.49% 0.76%
UNITED THERAPEUTICS 1.35% 0.68%
XPO 1.26% 0.60%
TENET HEALTHCARE CORP 1.24% 0.60%
CURTISS WRIGHT 1.06% 0.59%
ROKU CLASS A 1.19% 0.59%
ROYAL GOLD 1.16% 0.59%
ROIVANT SCIENCES LTD 0.63% 0.58%
MACOM TECHNOLOGY SOLUTIONS 1.07% 0.58%
Only in IJK
FORMFACTOR INC 0.50%
CASH COLLATERAL USD BOASW CFD 0.00%
EVERCORE CLASS A 0.00%
S&P MID 400 EMINI DEC 26 0.00%
Only in IVOO
Twilio Inc 1.32%
TD SYNNEX Corp 0.60%
US Foods Holding Corp 0.58%
Reliance Inc 0.58%
Permian Resources Corp 0.52%
WESCO International Inc 0.51%
HF Sinclair Corp 0.49%
SLCMT1142 0.47%

Check overlap with more funds →

On the same fields

IJK
iShares S&P Mid-Cap 400 Growth ETF
IVOO
Vanguard S&P Mid-Cap 400 ETF
Where it sits Stock ETF Stock ETF
What it is Tracks an index Tracks an index
Total return, 1 year +14.9% +13.6%
Its benchmark over the same days +14.9% (MDYG) +13.4% (IJH)
Gap to its benchmark 0.0 pts vs MDYG +0.1 pts vs IJH
Expense ratio 0.16% 0.07%
Already in the S&P 500 0.0% 1.6%
Holdings 250 402
Net assets, IJK as of Oct 20, 2026 and IVOO as of Sep 30, 2026 $10.5bn $3.7bn

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

About IJK

IJK tracks an index. Over the year to Oct 20, 2026 it returned +14.9% with distributions reinvested, against +14.9% for its benchmark, the S&P MidCap 400 Growth Index. The prospectus expense ratio is 0.16% a year. By its holdings published by its issuer for Oct 19, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 250 positions, with the top ten at 13.5%. It sat 8.1% below its high of Aug 17, 2026 on Oct 20, 2026.

About IVOO

IVOO tracks an index. Over the year to Oct 20, 2026 it returned +13.6% with distributions reinvested, against +13.4% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.07% a year. By its holdings published by its issuer as of Sep 30, 2026, 2% of the fund by weight is stocks the S&P 500 also holds, across 402 positions, with the top ten at 7.8%. It sat 6.7% below its high of Aug 14, 2026 on Oct 20, 2026.

Questions people ask

Which returned more over the last year, IJK or IVOO?
In the year to Oct 20, 2026, with distributions reinvested, IJK returned +14.9% and IVOO +13.6%.
Which is cheaper, IJK or IVOO?
IVOO is cheaper, by 0.09 percentage points a year. That is about $9 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IJK and IVOO overlap with the S&P 500?
By their latest filed holdings, 0% of IJK and 2% of IVOO by weight is stocks the S&P 500 already holds.
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ETFIQ, IJK against IVOO, data as of Oct 20, 2026. https://etfiq.com/compare/any/ijk-vs-ivoo

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