ETF comparison
MGK vs SPY
US Large Cap Growth vs US Large Cap.
Vanguard Morningstar Mega Cap Growth ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
54 positions appear in both funds. Buying equal dollars of MGK and SPY would leave roughly 52.7% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
MGK 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 the cost calculator pre-filled with MGK vs SPY.
Top shared holdings
54 shared in total| # | Holding | In MGK | In SPY | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp | 13.27% | 8.50% | 8.50% |
| 2 | Apple Inc | 12.17% | 7.32% | 7.32% |
| 3 | Microsoft Corp | 7.50% | 5.77% | 5.77% |
| 4 | Amazon.com Inc | 4.46% | 3.71% | 3.71% |
| 5 | Alphabet Inc | 5.92% | 3.03% | 3.03% |
| 6 | Broadcom Inc | 4.27% | 2.54% | 2.54% |
| 7 | Alphabet Inc | 4.66% | 2.43% | 2.43% |
| 8 | Meta Platforms Inc | 4.08% | 2.41% | 2.41% |
| 9 | Tesla Inc | 3.93% | 1.57% | 1.57% |
| 10 | Advanced Micro Devices Inc | 3.19% | 1.55% | 1.55% |
| 11 | Eli Lilly & Co | 3.40% | 1.37% | 1.37% |
| 12 | Visa Inc | 1.82% | 0.92% | 0.92% |
Only in MGK
2 total- Space Exploration Technologies Corp 0.48%
- Snowflake Inc 0.33%
Only in SPY
451 total- MICRON TECHNOLOGY INC 1.82%
- BERKSHIRE HATHAWAY INC CL B 1.41%
- JPMORGAN CHASE + CO 1.33%
- EXXONMOBIL HOLDINGS CORP 1.01%
- JOHNSON + JOHNSON 0.93%
- WALMART INC 0.70%
- ABBVIE INC 0.70%
- CISCO SYSTEMS INC 0.66%
- CHEVRON CORP 0.61%
- COSTCO WHOLESALE CORP 0.61%
Related comparisons
More comparisons with MGK
- MGK vs VOO · Vanguard S&P 500 ETF 50.9%
- MGK vs SPYM · State Street SPDR Portfolio S&P 500 ETF 50.9%
- MGK vs IVV · iShares Core S&P 500 ETF 50.9%
- MGK vs JGRO · JPMorgan Active Growth ETF 49.6%
- MGK vs SCHB · Schwab U.S. Broad Market ETF 46.8%
- MGK vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 45.2%
More comparisons with SPY
- SPY vs FBCG · Fidelity Blue Chip Growth ETF 52.3%
- SPY vs VONV · Vanguard Russell 1000 Value Index Fund ETF Shares 51.7%
- SPY vs OMFL · Invesco Russell 1000 Dynamic Multifactor ETF 51.2%
- SPY vs DGRW · WisdomTree U.S. Quality Dividend Growth Fund 50.6%
- SPY vs IWX · iShares Russell Top 200 Value ETF 47.1%
- SPY vs JGRO · JPMorgan Active Growth ETF 45.0%
Percentages are holdings overlap with the named fund.
Open MGK or SPY 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.