Fund · Vanguard Mega Cap Growth Index Fund · measured from SEC filings
MGK holdings
MGK reports 59 holdings and behaves like 17.9 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-06-30. The fact sheet publishes the first number; this page computes the second, and traces it across 28 quarters of filings.
Measured concentration
as of 2026-06-30Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 99.99% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-06-30MGK's largest investment is Nvidia Corp at 13.27% of net assets. Apple Inc and Microsoft Corp follow; the three together are 32.94%. Ten companies are 63.6% of the fund; the other 49 share the rest. Among the 721 equity funds measured here, MGK behaves like 17.9 holdings against a median of 42.4 — 2.4 times more concentrated than the median. Across 28 quarterly filings MGK has become more concentrated: it behaved like 28.1 at 2019-11-30 and 17.9 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 5 positions were added and 8 dropped; 10.3% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.
Every filing since 2019
28Between 2019-11-30 and 2026-06-30, MGK went from behaving like 28.1 equally weighted positions to 17.9 — 36% fewer, while its top ten went from 47.72% to 63.6% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 59 | 17.9 | 63.6% | 13.26% |
| 2026-03-31 | 63 | 16.8 | 65.74% | 13.74% |
| 2025-12-31 | 63 | 16.9 | 66.05% | 12.98% |
| 2025-09-30 | 70 | 16 | 65.14% | 13.79% |
| 2025-06-30 | 72 | 15.5 | 65.61% | 13.5% |
| 2025-03-31 | 71 | 16.2 | 63.91% | 14.33% |
| 2024-12-31 | 70 | 15.9 | 64.47% | 14.26% |
| 2024-09-30 | 75 | 15.9 | 63.47% | 13.72% |
Earlier filings (20 more, back to 2019-11-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-08-31 | 74 | 16.7 | 62.4% | 13.54% |
| 2024-05-31 | 84 | 14.9 | 65.33% | 14.45% |
| 2024-02-29 | 87 | 16.9 | 62.61% | 14.62% |
| 2023-11-30 | 93 | 15.9 | 62.08% | 15.1% |
| 2023-08-31 | 100 | 17 | 61.15% | 15.29% |
| 2023-05-31 | 100 | 16 | 59.85% | 15.97% |
| 2023-02-28 | 98 | 17.8 | 56.48% | 15.79% |
| 2022-11-30 | 98 | 18 | 55.59% | 15.71% |
| 2022-08-31 | 101 | 16.5 | 59.22% | 16.29% |
| 2022-05-31 | 109 | 17.3 | 58.86% | 15.32% |
| 2022-02-28 | 103 | 17.3 | 59.56% | 15.1% |
| 2021-11-30 | 111 | 19 | 58.72% | 13.33% |
| 2021-08-31 | 117 | 20.9 | 55.25% | 12.57% |
| 2021-05-31 | 116 | 22.8 | 53.46% | 11.3% |
| 2021-02-28 | 103 | 20.7 | 55.16% | 12.42% |
| 2020-11-30 | 104 | 21.1 | 54.08% | 12.57% |
| 2020-08-31 | 112 | 19.8 | 54.76% | 13.43% |
| 2020-05-31 | 116 | 24.1 | 50.87% | 11.53% |
| 2020-02-29 | 117 | 26.3 | 48.87% | 11.24% |
| 2019-11-30 | 118 | 28.1 | 47.72% | 10.44% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-06-30The 15 largest of 59 positions in MGK's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: MGK.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | NVIDIA Corp | 13.26% | 13.3% |
| 2 | Apple Inc | 12.16% | 25.4% |
| 3 | Microsoft Corp | 7.50% | 32.9% |
| 4 | Alphabet Inc | 5.91% | 38.8% |
| 5 | Alphabet Inc | 4.66% | 43.5% |
| 6 | Amazon.com Inc | 4.46% | 47.9% |
| 7 | Broadcom Inc | 4.27% | 52.2% |
| 8 | Meta Platforms Inc | 4.07% | 56.3% |
| 9 | Tesla Inc | 3.92% | 60.2% |
| 10 | Eli Lilly & Co | 3.40% | 63.6% |
| 11 | Advanced Micro Devices Inc | 3.19% | 66.8% |
| 12 | Lam Research Corp | 1.92% | 68.7% |
| 13 | Visa Inc | 1.82% | 70.5% |
| 14 | KLA Corp | 1.47% | 72.0% |
| 15 | Mastercard Inc | 1.47% | 73.5% |
Returns the fund reported
2019-09 – 2026-06Monthly total returns from Item B.5 of MGK's own filings, 82 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference 0.05 percentage points over 82 months, which is roughly the distributions. Every month with the filing it came from: MGK.json · all funds.
Who borrows MGK's shares
2026-06-30The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-06-30, $100m was out to 10 borrowers, 0.30% of net assets. The largest, Wells Fargo Securities LLC, held 34.6% of it.
| Borrower | On loan | Share of the loan |
|---|---|---|
| Wells Fargo Securities LLC | $35m | 34.6% |
| National Financial Services LLC | $15m | 15.1% |
| NOMURA SECURITIES INTERNATIONAL INC. | $15m | 14.7% |
| CLEAR STREET LLC | $10m | 10.0% |
| BofA Securities, Inc. | $7m | 6.8% |
Cash collateral reported against the loan: 0.29% of net assets, 96.1% of the amount lent. That is a floor on the collateral, not the whole of it — collateral the fund does not hold as a position is not in this filing, so a figure under 100% is not evidence of under-collateralisation. How that figure behaves across all funds. Every quarter MGK has filed, with each borrower: MGK.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-3061 positions became 58: 5 added (3.7% of the fund at the later date), 8 dropped (3.3% at the earlier date). Half the sum of all weight changes, a turnover proxy: 10.3%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of MGK compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-03-31 | 2026-06-30 | Largest decreases | 2026-03-31 | 2026-06-30 |
|---|---|---|---|---|---|
| Advanced Micro Devices Inc | 1.49% | 3.19% | Microsoft Corp | 9.01% | 7.50% |
| Lam Research Corp | 1.25% | 1.92% | Netflix Inc | 1.76% | 1.12% |
| Sandisk Corp | 0.62% | 1.27% | NVIDIA Corp | 13.74% | 13.26% |
| Marvell Technology Inc | 0.41% | 1.03% | Palantir Technologies Inc | 1.42% | 0.97% |
| KLA Corp | 0.98% | 1.47% | Apple Inc | 12.60% | 12.16% |
| Corning Inc | 0.44% | 0.89% | Intuit Inc | 0.66% | 0.29% |
New: Applied Materials Inc (1.13%), Intel Corp (1.10%), Western Digital Corp (0.51%), Seagate Technology Holdings PLC (0.51%), Space Exploration Technologies Corp (0.48%). Gone: McDonald's Corp (0.63%), Salesforce Inc (0.51%), S&P Global Inc (0.44%), T-Mobile US Inc (0.39%), Adobe Inc (0.38%), Sherwin-Williams Co/The (0.36%).
Asset categories and pricing
as of 2026-06-3099.44% equity, 0.55% short-term investment as filed; 100.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Derivative exposure and counterparties
as of 2026-06-30A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $33.30B. Notional of an interest-rate or currency swap is not equity exposure.
| Swap counterparty | Notional | % of net assets |
|---|---|---|
| Bank of America NA | $53M | 0.16% |
Financing leg as filed: the fund pays OBFR01 + 0% on $53M of long swap notional . Issuers fill the spread field differently (some file the all-in rate), so compare within an issuer, not across.
Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).
Neighbours by effective holdings, equity funds
10Every measured equity fund lined up by how many holdings it behaves like; these sit either side of MGK (17.9). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| EWW iShares MSCI Mexico ETF | 42 | 17.6 | 63.06% | 2026-05-31 |
| EWT iShares MSCI Taiwan ETF | 87 | 17.9 | 51.57% | 2026-05-31 |
| SOXQ Invesco PHLX Semiconductor ETF | 31 | 17.9 | 63.38% | 2026-05-31 |
| FSTA Fidelity MSCI Consumer Staples Index ETF | 95 | 17.9 | 61.72% | 2026-07-31 |
| UDOW ProShares UltraPro Dow30 | 44 | 17.9 * | 53.03% | 2026-05-31 |
| FFLG Fidelity Fundamental Large Cap Growth ETF | 97 | 18 | 55.78% | 2026-07-31 |
| AIPI REX AI Equity Premium Income ETF | 25 | 18.2 | 61.05% | 2026-05-31 |
| RAA SMI 3Fourteen REAL Asset Allocation ETF | 183 | 18.4 | 60.33% | 2026-06-30 |
| KBWB Invesco KBW Bank ETF | 26 | 18.5 | 61.55% | 2026-05-31 |
| IYH iShares U.S. Healthcare ETF | 102 | 18.6 | 59.09% | 2026-07-31 |
Essays that examine MGK
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.