IVV vs MGK: Holdings Overlap
iShares · 503 holdings · $901.0B · as of 2026-03-31
MGKVanguard Mega Cap Growth Index Fund
Vanguard · 59 holdings · $33.7B · as of 2026-03-31
How similar are IVV and MGK?
iShares Core S&P 500 ETF (IVV, by iShares) holds 503 positions; Vanguard Mega Cap Growth Index Fund (MGK, by Vanguard) holds 59. They have 57 holdings in common, and by portfolio weight the two funds are 48.4% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 48.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 57IVV holds 503 · MGK holds 59
- Weight in Shared Holdings
- IVV 48%·MGK 99%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 IVV
446 of 503 positions (51.4% of the fund) are not held by MGK. Showing the top 30 by weight.
Sector Breakdown
| Sector | IVV | MGK |
|---|---|---|
| Information Technology | 32.6% | 54.4% |
| Communication Services | 10.5% | 16.7% |
| Consumer Discretionary | 9.8% | 13.1% |
| Financials | 12.6% | 4.9% |
| Health Care | 9.4% | 5.2% |
| Other Sectors | 24.8% | 5.6% |
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 |
|---|---|---|---|---|---|---|---|
| IVV | +3.4% | +14.0% | +23.7% | +21.3% | +13.4% | +15.4% | 1.05% |
| MGK | +3.8% | +10.2% | +19.4% | +24.7% | +14.0% | +18.8% | 0.32% |
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 IVV vs MGK →
Shared Holdings(57)
The top 10 shared positions account for 75% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 7.56% | 13.75% | 7.56% |
|---|---|---|---|
 AAPLApple Inc. COM | 6.65% | 12.60% | 6.65% |
 MSFTMicrosoft Corp. COM | 4.91% | 9.01% | 4.91% |
 AMZNAmazon.com, Inc. COM | 3.63% | 4.59% | 3.63% |
 GOOGLAlphabet Inc. CAP STK CL A | 2.99% | 5.51% | 2.99% |
 AVGOBroadcom Inc COM | 2.62% | 4.40% | 2.62% |
 GOOGAlphabet Inc. CAP STK CL C | 2.39% | 4.37% | 2.39% |
 METAMeta Platforms, Inc., Class A | 2.23% | 4.17% | 2.23% |
 TSLATesla Inc COM | 1.87% | 4.18% | 1.87% |
 LLYEli Lilly & Co. COM | 1.30% | 3.17% | 1.30% |
 VVisa, Inc., Class A | 0.91% | 1.97% | 0.91% |
 MAMasterCard Incorporated CL A | 0.73% | 1.72% | 0.73% |
 NFLXNetflix, Inc. COM | 0.72% | 1.76% | 0.72% |
 PLTRPalantir Technologies, Inc., Class A | 0.60% | 1.42% | 0.60% |
 AMDAdvanced Micro Devices Inc. COM | 0.59% | 1.49% | 0.59% |
 LRCXLam Research Corporation COM NEW | 0.48% | 1.25% | 0.48% |
 ORCLOracle Corp. COM | 0.45% | 1.18% | 0.45% |
 GEVGE Vernova Inc. COM | 0.42% | 1.14% | 0.42% |
 MCDMcDonald's Corp. COM | 0.40% | 0.63% | 0.40% |
 KLACKLA Corp. COM NEW | 0.34% | 0.98% | 0.34% |
 TJXThe TJX Companies Inc. COM | 0.32% | 0.90% | 0.32% |
 CRMSalesforce Inc. COM | 0.31% | 0.51% | 0.31% |
 ISRGIntuitive Surgical Inc. COM NEW | 0.29% | 0.83% | 0.29% |
 BABoeing Co. (The) | 0.28% | 0.78% | 0.28% |
 APHAmphenol Corporation CL A | 0.28% | 0.80% | 0.28% |
Frequently Asked Questions
How much do IVV and MGK overlap?
IVV and MGK overlap by 48.4% of portfolio weight. They share 57 holdings (IVV holds 503 positions and MGK holds 59), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IVV and MGK?
The two portfolios are 48.4% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of IVV and MGK?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 75% of the total overlap.
What does IVV own that MGK doesn't?
446 positions (51.4% of IVV) are unique to IVV, led by BRK-B, JPM and XOM. In the other direction, 2 positions (0.7% of MGK) are unique to MGK.