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 50.0% 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 | Apple Inc | 12.17% | 7.69% | 7.69% |
| 2 | NVIDIA Corp | 13.27% | 7.30% | 7.30% |
| 3 | Microsoft Corp | 7.50% | 6.22% | 6.22% |
| 4 | Amazon.com Inc | 4.46% | 3.94% | 3.94% |
| 5 | Alphabet Inc | 5.92% | 2.56% | 2.56% |
| 6 | Broadcom Inc | 4.27% | 2.33% | 2.33% |
| 7 | Meta Platforms Inc | 4.08% | 2.09% | 2.09% |
| 8 | Alphabet Inc | 4.66% | 2.06% | 2.06% |
| 9 | Eli Lilly & Co | 3.40% | 1.71% | 1.71% |
| 10 | Tesla Inc | 3.93% | 1.64% | 1.64% |
| 11 | Advanced Micro Devices Inc | 3.19% | 1.20% | 1.20% |
| 12 | Visa Inc | 1.82% | 1.12% | 1.12% |
Only in MGK
2 total- Space Exploration Technologies Corp 0.48%
- Snowflake Inc 0.33%
Only in SPY
450 total- BERKSHIRE HATHAWAY INC CL B 1.63%
- JPMORGAN CHASE + CO 1.41%
- MICRON TECHNOLOGY INC 1.35%
- EXXONMOBIL HOLDINGS CORP 1.05%
- JOHNSON + JOHNSON 1.00%
- WALMART INC 0.87%
- ABBVIE INC 0.79%
- COSTCO WHOLESALE CORP 0.70%
- CHEVRON CORP 0.65%
- CISCO SYSTEMS INC 0.62%
Related comparisons
More comparisons with MGK
- MGK vs JGRO · JPMorgan Active Growth ETF 49.6%
- MGK vs CGGR · Capital Group Growth ETF 46.6%
- MGK vs SCHB · Schwab U.S. Broad Market ETF 45.6%
- MGK vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 45.2%
- MGK vs VTI · Vanguard Morningstar Total Stock Market ETF 45.2%
- MGK vs RPG · Invesco S&P 500 Pure Growth ETF 26.6%
More comparisons with SPY
- SPY vs QQQ · Invesco QQQ Trust 49.8%
- SPY vs IWX · iShares Russell Top 200 Value ETF 49.5%
- SPY vs QUAL · iShares MSCI USA Quality Factor ETF 46.0%
- SPY vs CGUS · Capital Group Core Equity ETF 44.3%
- SPY vs RSP · Invesco S&P 500 Equal Weight ETF 44.0%
- SPY vs DUHP · DFA U.S. High Relative Profitability Portfolio – ETF Class Shares 43.4%
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.