Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IJR vs MGK: how they differ
IJR and MGK hold 0% of their weight in the same names, and IJR returned more over the year.
iShares Core S&P Small-Cap ETF and Vanguard Mega Cap Growth Index Fund.
What they hold in common
By the books each fund has filed, IJR and MGK hold 0% of their money in the same securities at the same weight.
| Only in IJR | Only in MGK |
|---|---|
| BLK CSH FND TREASURY SL AGENCY 1.94% | NVIDIA Corp 13.29% |
| CORCEPT THERAPEUTICS 0.62% | Apple Inc 12.19% |
| VIASAT INC 0.57% | Microsoft Corp 7.52% |
| GLAUKOS 0.57% | Alphabet Inc 5.93% |
| MATCH GROUP INC 0.56% | Alphabet Inc 4.67% |
| BRINKER INTERNATIONAL INC 0.52% | Amazon.com Inc 4.47% |
| QORVO 0.51% | Broadcom Inc 4.28% |
| PAYCOM SOFTWARE 0.51% | Meta Platforms Inc 4.08% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Sep 10, 2026.
| IJR iShares Core S&P Small-Cap ETF | MGK Vanguard Mega Cap Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | S&P SmallCap 600 | Mega Cap Growth |
| Total return, 1 year | +19.9% | +14.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +2.4 pts | −2.6 pts |
| Expense ratio | 0.06% | 0.07% |
| Already in the S&P 500 | 0.0% | 99.2% |
| Holdings | 608 | 56 |
IJR in plain words
IJR is an index equity fund tracking the S&P SmallCap 600. Over the year to Sep 11, 2026 it returned +19.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.06% a year. By its holdings filed for Sep 10, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 608 positions, with the top ten at 6.8%. It sat 5.5% below its high of Aug 14, 2026 on Sep 11, 2026.
MGK in plain words
MGK is an index equity fund tracking the Mega Cap Growth. Over the year to Sep 11, 2026 it returned +14.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.07% a year. By its holdings filed for Jun 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 56 positions, with the top ten at 63.8%.
Questions people ask
- Which returned more over the last year, IJR or MGK?
- In the year to Sep 13, 2026, with distributions reinvested, IJR returned +19.9% and MGK returned +14.9%, so IJR returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IJR or MGK?
- IJR charges 0.06% a year and MGK charges 0.07%, so IJR is cheaper. Fees come from each fund's prospectus.
- How much do IJR and MGK overlap with the S&P 500?
- By their latest filed holdings, 0% of IJR and 99% of MGK by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
Other comparisons
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IJR against MGK, data as of Sep 13, 2026. https://etfiq.com/compare/any/ijr-vs-mgk Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources