MGCvsOEF

Vanguard Mega Cap ETF or iShares S&P 100 ETF, side by side from their own SEC filings. 86% of their stock holdings are the same at the same weight, across 100 stocks in both. MGC costs 0.05% a year against 0.20% for OEF, $15 a year less on $10,000. Over the last twelve months MGC returned +31.6% and OEF +21.4%.

86%of the two portfolios is the same stocks at the same weight
MGC88% in stocks the other holds too
OEF100% in stocks the other holds too
stocks in bothstocks only in that fundbonds, cash and unmatched shares

The two funds

From each fund's latest N-PORT filing and its prospectus.

MGCOEFYearly cost0.05%0.20%Net assets$10.8B$20.0BPositions182104Last 12 months+31.6%+21.4%3 years, a year+25.0%+22.2%5 years, a year+14.9%+14.6%Largest holdingNVDA 9.1%NVDA 10.5%Main sectorTechnology 43%Technology 43%Holdings as ofMay 31, 2026Jun 30, 2026

Returns are total returns with dividends reinvested, from the funds’ own monthly figures; “(price)” marks a fund whose filing record is younger than a year, whose twelve months are its price change. The stronger figure in each row is set in bold. Past returns say what happened, not what will.

Growth of $100

Both funds from September 2019, the first month both report, dividends reinvested.

MGC$302OEF$318
September 2019May 2026

Only in OEF

Its biggest stocks the other fund does not hold.

  1. GMGeneral Motors0.1%

More comparisons

From each fund’s Form N-PORT (MGC: May 2026, OEF: June 2026) and prospectus, via the SEC’s public data sets. Overlap counts only the stocks we can match to a listing: stock by stock, the smaller of the two weights, added up.