ETF comparison
MGK vs SPYG
Both US Large Cap Growth.
Vanguard Mega Cap Growth Index Fund · State Street SPDR Portfolio S&P 500 Growth ETF
Holdings overlap
48 positions appear in both funds. Buying equal dollars of MGK and SPYG would leave roughly 72.6% of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
SPYG is 1 bps cheaper than MGK. On a $100,000 position that's about $10/yr more in fees for MGK.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with MGK vs SPYG.
Top shared holdings
48 shared in total| # | Holding | In MGK | In SPYG | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp | 13.75% | 14.62% | 13.75% |
| 2 | Microsoft Corp | 9.01% | 9.48% | 9.01% |
| 3 | Apple Inc | 12.60% | 6.43% | 6.43% |
| 4 | Alphabet Inc | 5.51% | 5.78% | 5.51% |
| 5 | Broadcom Inc | 4.40% | 5.06% | 4.40% |
| 6 | Alphabet Inc | 4.37% | 4.63% | 4.37% |
| 7 | Meta Platforms Inc | 4.17% | 4.32% | 4.17% |
| 8 | Amazon.com Inc | 4.59% | 3.72% | 3.72% |
| 9 | Eli Lilly & Co | 3.17% | 2.51% | 2.51% |
| 10 | Tesla Inc | 4.18% | 2.24% | 2.24% |
| 11 | Netflix Inc | 1.76% | 1.40% | 1.40% |
| 12 | Palantir Technologies Inc | 1.42% | 1.15% | 1.15% |
Only in MGK
11 total- Vertex Pharmaceuticals Inc 0.65%
- Equinix Inc 0.60%
- Salesforce Inc 0.51%
- Synopsys Inc 0.49%
- Ecolab Inc 0.47%
- Marvell Technology Inc 0.41%
- T-Mobile US Inc 0.39%
- Adobe Inc 0.38%
- Sherwin-Williams Co/The 0.36%
- Cintas Corp 0.29%
Only in SPYG
96 total- Berkshire Hathaway Inc 3.03%
- JPMorgan Chase & Co 1.86%
- Micron Technology Inc 1.31%
- Johnson & Johnson 1.20%
- Caterpillar Inc 1.14%
- Applied Materials Inc 0.94%
- RTX Corp 0.89%
- AbbVie Inc 0.61%
- Goldman Sachs Group Inc/The 0.57%
- Cisco Systems Inc 0.56%
Open MGK or SPYG at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
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.