ETF comparison
MGCvsSPY
Both US Large Cap.
Vanguard Morningstar Mega Cap ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
169 positions appear in both funds. Buying equal dollars of MGC and SPY would leave roughly81.5%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
MGC is 4 bps cheaper than SPY. On a $100,000 position that's about $44/yr more in fees for SPY.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open thecost calculator pre-filled with MGC vs SPY.
Top shared holdings
169 shared in total| # | Holding | In MGC | In SPY | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp | 9.10% | 8.29% | 8.29% |
| 2 | Apple Inc | 8.55% | 7.22% | 7.22% |
| 3 | Microsoft Corp | 6.24% | 5.68% | 5.68% |
| 4 | Amazon.com Inc | 4.88% | 3.80% | 3.80% |
| 5 | Alphabet Inc | 4.13% | 3.01% | 3.01% |
| 6 | Broadcom Inc | 3.95% | 2.53% | 2.53% |
| 7 | Alphabet Inc | 3.25% | 2.40% | 2.40% |
| 8 | Meta Platforms Inc | 2.58% | 2.01% | 2.01% |
| 9 | Micron Technology Inc | 2.04% | 1.62% | 1.62% |
| 10 | Tesla Inc | 2.29% | 1.59% | 1.59% |
| 11 | JPMorgan Chase & Co | 1.41% | 1.45% | 1.41% |
| 12 | Berkshire Hathaway Inc | 1.53% | 1.40% | 1.40% |
Only in MGC
4 total- Exxon Mobil Corp1.13%
- Honeywell International Inc0.28%
- Berkshire Hathaway Inc0.11%
- Snowflake Inc0.08%
Only in SPY
335 total- EXXONMOBIL HOLDINGS CORP1.01%
- SEAGATE TECHNOLOGY HOLDINGS0.27%
- WESTERN DIGITAL CORP0.23%
- MARATHON PETROLEUM CORP0.17%
- VALERO ENERGY CORP0.16%
- HOWMET AEROSPACE INC0.16%
- VERTIV HOLDINGS CO A0.15%
- PHILLIPS 660.15%
- ROBINHOOD MARKETS INC A0.15%
- QUANTA SERVICES INC0.14%
Open MGC or SPY at a brokerage
Both funds trade commission-free at major US brokerages.
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Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.