MGK vs VONG: Holdings Overlap
MGKVanguard Mega Cap Growth Index Fund
Vanguard · 59 holdings · $33.7B · as of 2026-03-31
VONGVanguard Russell 1000 Growth Index Fund
Vanguard · 387 holdings · $45.7B · as of 2026-05-31
Holdings snapshots are 61 days apart (MGK: 2026-03-31, VONG: 2026-05-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are MGK and VONG?
Vanguard Mega Cap Growth Index Fund (MGK, by Vanguard) holds 59 positions; Vanguard Russell 1000 Growth Index Fund (VONG, by Vanguard) holds 387. They have 53 holdings in common, and by portfolio weight the two funds are 78.2% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 78.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 53MGK holds 59 · VONG holds 387
- Weight in Shared Holdings
- MGK 97%·VONG 80%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in MGK
6 of 59 positions (3.2% of the fund) are not held by VONG.
Sector Breakdown
| Sector | MGK | VONG |
|---|---|---|
| Information Technology | 54.4% | 52.8% |
| Communication Services | 16.7% | 12.5% |
| Consumer Discretionary | 13.1% | 12.7% |
| Health Care | 5.2% | 6.9% |
| Industrials | 3.0% | 6.2% |
| Other Sectors | 7.4% | 8.8% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| MGK | +3.8% | +10.2% | +19.4% | +24.7% | +14.0% | +18.8% | 0.32% |
| VONG | +2.7% | +5.6% | +13.3% | +22.2% | +12.8% | +17.9% | 0.45% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in MGK vs VONG →
Shared Holdings(53)
The top 10 shared positions account for 76% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 13.75% | 13.07% | 13.07% |
|---|---|---|---|
 AAPLApple Inc. COM | 12.60% | 11.95% | 11.95% |
 MSFTMicrosoft Corp. COM | 9.01% | 8.96% | 8.96% |
 AMZNAmazon.com, Inc. COM | 4.59% | 5.06% | 4.59% |
 AVGOBroadcom Inc COM | 4.40% | 5.77% | 4.40% |
 GOOGLAlphabet Inc. CAP STK CL A | 5.51% | 3.91% | 3.91% |
 TSLATesla Inc COM | 4.18% | 3.48% | 3.48% |
 METAMeta Platforms, Inc., Class A | 4.17% | 3.19% | 3.19% |
 GOOGAlphabet Inc. CAP STK CL C | 4.37% | 3.15% | 3.15% |
 LLYEli Lilly & Co. COM | 3.17% | 2.67% | 2.67% |
 VVisa, Inc., Class A | 1.97% | 1.57% | 1.57% |
 AMDAdvanced Micro Devices Inc. COM | 1.49% | 1.47% | 1.47% |
 LRCXLam Research Corporation COM NEW | 1.25% | 1.20% | 1.20% |
 MAMasterCard Incorporated CL A | 1.72% | 1.20% | 1.20% |
 ORCLOracle Corp. COM | 1.18% | 1.15% | 1.15% |
 NFLXNetflix, Inc. COM | 1.76% | 1.10% | 1.10% |
 PLTRPalantir Technologies, Inc., Class A | 1.42% | 1.03% | 1.03% |
 GEVGE Vernova Inc. COM | 1.14% | 0.79% | 0.79% |
 KLACKLA Corp. COM NEW | 0.98% | 0.76% | 0.76% |
 PANWPalo Alto Networks Inc COM | 0.71% | 0.68% | 0.68% |
 APHAmphenol Corporation CL A | 0.80% | 0.55% | 0.55% |
 CRWDCrowdstrike Holdings, Inc., Class A | 0.56% | 0.54% | 0.54% |
 ANETArista Networks Inc COM SHS | 0.70% | 0.50% | 0.50% |
 ISRGIntuitive Surgical Inc. COM NEW | 0.83% | 0.45% | 0.45% |
 APPAppLovin Corp., Class A | 0.55% | 0.44% | 0.44% |
Frequently Asked Questions
How much do MGK and VONG overlap?
MGK and VONG overlap by 78.2% of portfolio weight. They share 53 holdings (MGK holds 59 positions and VONG holds 387), based on each fund's latest SEC-reported holdings.
Is it redundant to own both MGK and VONG?
The two portfolios are 78.2% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of MGK and VONG?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and AVGO. Together the top 10 shared positions account for 76% of the total overlap.
What does MGK own that VONG doesn't?
6 positions (3.2% of MGK) are unique to MGK, led by WELL, SNDK and EQIX. In the other direction, 334 positions (19.8% of VONG) are unique to VONG.