FBCG vs MGK overlap - what they share and where they differ
FBCG and MGK share 64.7% of their weight across 39 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
FBCG and MGK
64.7%
39 shared positions
FBCG
Fidelity Blue Chip Growth ETF
Reported positions cover 100% of the fund, 228 positions · Jul 31, 2026
Top 10: 57.5%·Holdings of FBCG
MGK
VANGUARD MEGA CAP GROWTH INDEX FUND
Reported positions cover 100% of the fund, 55 positions · Jun 30, 2026
Top 10: 66.8%·Holdings of MGK
Reported positions cover FBCG 100%, MGK 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
MGK vs FBCG side by side
FBCGFidelity Blue Chip Growth ETF
228
stock positions reported to the SEC
30.3% of its weight is in 189 names MGK does not hold
MGKVANGUARD MEGA CAP GROWTH INDEX FUND
55
stock positions reported to the SEC
7.8% of its weight is in 16 names FBCG does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: MGK has 8.6 points more of it.
The figures side by side
| FBCG | MGK | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 228 | 55 |
| Weight of the ten largest | 57.5% | 66.8% |
| Largest position | NVDA 14.9% | NVDA 13.3% |
| Held alone | 189 positions, 30.3% | 16 positions, 7.8% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In FBCG | In MGK | Counted |
|---|---|---|---|
| NVDANVIDIA CORP | 14.90% | 13.27% | 13.27% |
| GOOGLALPHABET INC | 9.55% | 10.58% | 9.55% |
| AAPLAPPLE INC | 9.31% | 12.17% | 9.31% |
| MSFTMICROSOFT CORP | 4.94% | 7.50% | 4.94% |
| AMZNAMAZON.COM INC | 5.86% | 4.46% | 4.46% |
| AVGOBROADCOM INC | 4.38% | 4.27% | 4.27% |
| LLYELI LILLY and CO | 2.71% | 3.40% | 2.71% |
| METAMETA PLATFORMS INC | 2.31% | 4.08% | 2.31% |
| TSLATESLA INC | 1.28% | 3.93% | 1.28% |
| AMDADVANCED MICRO DEVICES INC | 1.06% | 3.19% | 1.06% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in FBCG
Only in MGK
Questions people ask
Is FBCG the same as MGK?
64.7% of their weight sits in the same 39 holdings. FBCG also reports MU, SANDISK CORP/DE, TAIWAN SEMICONDUCTOR MFG CO LTD, which the other does not. MGK also reports SNDK, BKNG, ISRG, which the other does not.
How is the overlap between FBCG and MGK measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of FBCG and 100% of MGK, so the number cannot exceed the smaller coverage.
Which holds more, MGK or FBCG?
FBCG reports 228 stock positions and MGK reports 55. 30.3% of FBCG's weight sits in names MGK does not hold, and 7.8% of MGK's weight in names FBCG does not hold. The ten largest positions are 57.5% of FBCG and 66.8% of MGK.
How do FBCG and MGK differ by sector?
The widest gap is Technology: MGK has 8.6 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
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Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.